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Showing results 3001 to 3050 out of 41495

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IDNameRepsClassRADECObj. TypeRedshiftHost Namesort ascendingHost RedshiftDiscovering Group/sClassifying Group/sAssociated Group/sDisc. Internal NameDisc. Instrument/sClass. Instrument/sTNS ATPublicEnd Prop. PeriodObject SpectraDiscovery MagDiscovery Mag FilterDiscovery Date (UT)SenderRemarksSourcesBibcodeExt. catalog/s
679SN 1987M09:08:06.700+78:05:25.00SN IbNGC 2715 NY151987-09-21 00:00:00[Discoverer=Lovas; DiscoveryRef=IAUC 4451; PositionRef=; Orig Type=Ib ] RA,DEC set on 2019-09-18 according to the data on http://www.rochesterastronomy.org<a href="https://tess.mit.edu/observations/#pointing" target="_blank" class="ext-cat-link">TESS-active sector/s (14,15)</a>, <a href="https://tess.mit.edu/observations/#pointing" target="_blank" class="ext-cat-link">TESS-Sector14</a>
327SN 1968E08:57:21.100+02:54:58.00SN IaNGC 2713 NY14.31968-03-21 00:00:00[Discoverer=Chavira; DiscoveryRef=IAUC 2061; PositionRef=; Orig Type=Ia ] RA,DEC set on 2019-09-18 according to the data on http://www.rochesterastronomy.org
30186AT 2018gzz100:50:42.552-01:54:06.84NGC 2710.0138SNHuntCRTS, SNHuntSNhunt392Other - OtherYY19.3V-crts-CRTS2018-09-30 09:15:40Drake
AT reportings
IDTime Received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery Date (UT)Discovery Mag.FilterPhotometryRelated FilesAT TypeHost NameHost RedshiftInternal NameAssoc. GroupsEnd Prop. PeriodRemarks
232522018-10-01 22:45:17ajdNikolay Mishevskiy with CRTSSNHunt00:50:42.552-01:54:06.842018-09-30 09:15:4019.3V-crts-CRTS3PSNNGC 2710.0138SNhunt392CRTS, SNHunt
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
370032018-09-30 09:15:4019.3ABMagV-crts-CRTSOther_OtherMLS 10K CCD.
370042018-09-13 06:21:3120.5ABMagV-crts-CRTSOther_OtherMLS 10K CCD.
370022018-09-07 10:25:5121ABMagV-crts-CRTSOther_Other[Last non detection] MLS 10K CCD.
5800SN 2011hr08:54:46.030+39:32:16.12SN IaNGC 2691 NY16.92011-11-08 00:00:00[Discoverer=Cenko et al. (LOSS); DiscoveryRef=CBET 2901; PositionRef=CBET 2901; Orig Type=Ia]
6134SN 2012W00:50:08.950-05:11:17.48SN IINGC 268 NY16.62012-01-26 00:00:00[Discoverer=Howerton, Drake et al. (Catalina Sky Survey); DiscoveryRef=CBET 3009; PositionRef=CBET 3009; Orig Type=II]
38 1938B08:49:24.300+19:04:07.00NGC 2672 NY15.50000-00-00 00:00:00[Discoverer=Wachmann; DiscoveryRef=; PositionRef=; Orig Type=Unknown] RA,DEC set on 2019-09-18 according to the data on http://www.rochesterastronomy.org
2766SN 2003je08:49:22.241+36:42:56.59SN IINGC 2668 NY18.12003-10-25 00:00:00[Discoverer=Lick Observatory Supernova Survey; DiscoveryRef=IAUC 8232; PositionRef=IAUC 8232; Orig Type=II ]
3282SN 2005gl00:49:50.021+32:16:56.78SN IInNGC 266 NY18.22005-10-05 00:00:00[Discoverer=Puckett, Ceravolo; DiscoveryRef=CBET 250; PositionRef=IAUC 8615; Orig Type=IIn ]
5620SN 2011B08:55:48.499+78:13:02.71SN IaNGC 2655 NY15.82011-01-07 00:00:00[Discoverer=Itagaki; DiscoveryRef=CBET 2625; PositionRef=CBET 2625; Orig Type=Ia ]
2329SN 2002fj08:40:45.101-04:07:38.50SN IInNGC 2642 NY15.82002-09-12 00:00:00[Discoverer=Monard; DiscoveryRef=IAUC 7973; PositionRef=IAUC 7973; Orig Type=IIn ]
4634SN 2008bh08:40:46.150-04:07:09.41SN IINGC 2642 NY16.32008-03-23 00:00:00[Discoverer=Pignata et al. (CHASE); Narla, Li, Filippenko (LOSS); DiscoveryRef=CBET 1311; PositionRef=CBET 1311; Orig Type=II ]
34123AT 2019agw108:40:22.896+23:32:06.72NGC 26280.01208SNHuntCRTS, SNHuntOther - OtherYY20.4V-crts-CRTS2019-01-26 08:06:22Drake
AT reportings
IDTime Received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery Date (UT)Discovery Mag.FilterPhotometryRelated FilesAT TypeHost NameHost RedshiftInternal NameAssoc. GroupsEnd Prop. PeriodRemarks
293772019-01-29 04:03:03ajdNikolay Mishevskiy with CRTSSNHunt08:40:22.896+23:32:06.722019-01-26 08:06:2220.4V-crts-CRTS3PSNNGC 26280.01208CRTS, SNHuntVisible on five nights starting 2018-11-08. All with mag ~20.5 suggesting a faint or old transient.
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
526762019-01-26 08:06:2220.4ABMagV-crts-CRTSOther_OtherMLS 10K CCD.
526772018-11-08 10:33:5520.5ABMagV-crts-CRTSOther_OtherMLS 10K CCD.
526752018-04-10 03:01:0621.5ABMagV-crts-CRTSOther_Other[Last non detection] MLS 10K CCD.
1653SN 1999gd08:38:24.610+25:45:33.08SN IaNGC 2623 NY17.81999-11-24 00:00:00[Discoverer=Lick Observatory Supernova Search; DiscoveryRef=IAUC 7319; PositionRef=IAUC 7319; Orig Type=Ia ]
4635SN 2008bi08:35:53.390+00:42:23.11SN IaNGC 2618 NY15.92008-03-22 00:00:00[Discoverer=Pignata et al.; DiscoveryRef=CBET 1312; PositionRef=CBET 1312; Orig Type=Ia ]
6385SN 2014ao08:34:33.319-02:32:36.10SN IaNGC 2615 NY15.52014-04-17 00:00:00[Discoverer=Kumar, Bigley, Zheng et al. (LOSS); DiscoveryRef=CBET 3855; PositionRef=CBET 3855; Orig Type=Ia]
18 1920A08:35:16.300+28:28:30.00NGC 2608 NY11.81920-01-01 00:00:00[Discoverer=Wolf; DiscoveryRef=; PositionRef=; Orig Type=Unknown] RA,DEC set on 2019-09-18 according to the data on http://www.rochesterastronomy.org
1911SN 2001bg08:35:18.859+28:28:05.81SN IaNGC 2608 NY142001-05-08 00:00:00[Discoverer=Boles; DiscoveryRef=IAUC 7621; PositionRef=IAUC 7621; Orig Type=Ia ]
2243SN 2002ce08:33:22.099+29:32:01.00SN IINGC 2604 NY162002-04-10 00:00:00[Discoverer=Arbour; DiscoveryRef=IAUC 7875; PositionRef=IAUC 7875; Orig Type=II ]
295 1965P08:32:12.100+22:33:34.00NGC 2599 NY15.71965-03-06 00:00:00[Discoverer=Gates; DiscoveryRef=PASP 81, 224; PositionRef=; Orig Type=Unknown] RA,DEC set on 2019-09-18 according to the data on http://www.rochesterastronomy.org
2561SN 2003bp08:27:27.811+17:17:14.50SN IbNGC 2596 NY17.82003-03-06 00:00:00[Discoverer=LOTOSS; DiscoveryRef=IAUC 8089; PositionRef=IAUC 8089; Orig Type=Ib ]
1488SN 1999aa08:27:42.029+21:29:14.78SN IaNGC 2595 NY15.51999-02-11 00:00:00[Discoverer=Arbour; Beijing Observatory Supernova Survey; DiscoveryRef=IAUC 7108; PositionRef=IAUC 7108; Orig Type=Ia ]
23973SN 2017jbj1200:48:05.420-02:47:22.40SN II0.013492NGC 259NonePadova-AsiagoOther - OtherEkar - AFOSCYY216.9Clear-2017-12-20 11:22:29Itagaki
AT reportings
IDTime Received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery Date (UT)Discovery Mag.FilterPhotometryRelated FilesAT TypeHost NameHost RedshiftInternal NameAssoc. GroupsEnd Prop. PeriodRemarks
154562017-12-20 11:56:20K.ItagakiKoichi ItagakiNone00:48:05.420-02:47:22.402017-12-20 11:22:2916.9Clear-1PSNNGC 259
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
234332017-12-20 11:22:2916.9VegaMagClear-Other_Other0.5-m f6.8
Classification reportings
IDTime Received (UT)SenderClassifier/sGroupClassificationRedshiftSpectraRelated FilesAssoc. GroupsEnd Prop. PeriodRemarks
16142018-01-08 14:24:25linatomaLina TomasellaPadova-AsiagoSN II0.0134921Padova-Asiago
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
16182017-12-24 17:45:36Ekar_AFOSC2400tomasellatomasellaPadova-Asiago tns_2017jbj_2458112.24_Ekar_AFOSC_Padova-Asiago.dat tns_2017jbj_2458112.24_Ekar_AFOSC_Padova-Asiago.fitsObjectPadova-AsiagoThis spectrum was taken 4 days after the classification one, which was characterized by an almost featureless, blue continuum, typically seen in young core collapse SNe a few days after explosion. Now the Balmer features, typical of Type II SNe, have emerged.
15552017-12-22 11:50:10linatomaLina TomasellaPadova-AsiagoSN0.0134921Padova-Asiago
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
15592017-12-21 20:15:00Ekar_AFOSC2700tomasellatomasellaPadova-Asiago tns_2017jbj_2017-12-21_20-15-00_Ekar_AFOSC_Padova-Asiago.dat tns_2017jbj_2017-12-21_20-15-00_Ekar_AFOSC_Padova-Asiago.fitsObjectPadova-Asiago2018-12-22
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
16182017-12-24 17:45:36Ekar / AFOSC2400tomasellatomasellaPadova-Asiago tns_2017jbj_2458112.24_Ekar_AFOSC_Padova-Asiago.dat tns_2017jbj_2458112.24_Ekar_AFOSC_Padova-Asiago.fitsObjectPadova-AsiagoThis spectrum was taken 4 days after the classification one, which was characterized by an almost featureless, blue continuum, typically seen in young core collapse SNe a few days after explosion. Now the Balmer features, typical of Type II SNe, have emerged.
15592017-12-21 20:15:00Ekar / AFOSC2700tomasellatomasellaPadova-Asiago tns_2017jbj_2017-12-21_20-15-00_Ekar_AFOSC_Padova-Asiago.dat tns_2017jbj_2017-12-21_20-15-00_Ekar_AFOSC_Padova-Asiago.fitsObjectPadova-Asiago2018-12-22
6279SN 2013fg08:21:22.440-13:18:37.01SN IaNGC 2578 NY15.42013-09-02 00:00:00[Discoverer=Parker; DiscoveryRef=CBET 3648; PositionRef=CBET 3648; Orig Type=Ia]
4050SN 2007ax08:22:43.260+22:33:16.88SN IaNGC 2577 NY17.22007-03-21 00:00:00[Discoverer=Arbour; DiscoveryRef=CBET 904; PositionRef=IAUC 8829; Orig Type=Ia ]
2198SN 2002an08:22:47.760+24:17:41.71SN IINGC 2575 NY16.12002-01-22 00:00:00[Discoverer=Sano; DiscoveryRef=IAUC 7805; PositionRef=IAUC 7805; Orig Type=II ]
193 1960M08:19:47.441+22:02:28.72NGC 2565 NY15.71960-10-26 00:00:00[Discoverer=Gomes; DiscoveryRef=PASP 73, 175; PositionRef=PASP 105, 1250; Orig Type=Unknown]
911SN 1992I08:19:46.301+22:01:59.92SN IINGC 2565 NY181992-02-29 00:00:00[Discoverer=Buil; DiscoveryRef=IAUC 5464; PositionRef=IAUC 5464; Orig Type=II ]
2376SN 2002hc08:17:06.149-27:27:27.79SN IINGC 2559 NY172002-10-23 00:00:00[Discoverer=LOTOSS; DiscoveryRef=IAUC 7999; PositionRef=IAUC 8003; Orig Type=II ]
6316SN 2013gq08:17:53.460+23:28:10.49SN IaNGC 2554 NY15.12013-03-25 00:00:00[Discoverer=Blanchard, Zheng, Cenko et al. (LOSS); DiscoveryRef=CBET 3730; PositionRef=CBET 3730; Orig Type=Ia]
2725SN 2003hr08:24:39.060+73:24:23.29SN IINGC 2551 NY16.82003-08-31 00:00:00[Discoverer=Boles; DiscoveryRef=IAUC 8191; PositionRef=IAUC 8191; Orig Type=II ]
4850SN 2008P08:28:39.180+73:45:02.92SN IINGC 2550 NY17.52008-01-23 00:00:00[Discoverer=Dimai; DiscoveryRef=CBET 1223; PositionRef=CBET 1223; Orig Type=II ]
4802SN 2008hn08:14:14.249+21:21:37.91SN IcNGC 2545 NY18.42008-11-25 00:00:00[Discoverer=LOSS; DiscoveryRef=CBET 1586; PositionRef=CBET 1586; Orig Type=Ic ]
17077AT 2017be2108:13:13.380+45:59:29.54LBV0.001NGC 25370.001491LOSS, iPTFLCOGT SN-KPiPTF, LOSSkait-17AOther - Other, P48 - CFH12kFTN - FLOYDS-NYY118.5Clear-2017-01-06 12:11:24Zheng
AT reportings
IDTime Received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery Date (UT)Discovery Mag.FilterPhotometryRelated FilesAT TypeHost NameHost RedshiftInternal NameAssoc. GroupsEnd Prop. PeriodRemarks
78022017-01-07 10:49:55iPTF_Bot1M. Kasliwal, Y. Cao (Caltech), on behalf of iPTFiPTF08:13:13.375+45:59:28.932017-01-07 10:16:1918.349R-PTF2PSNiPTF17beiPTF2017-07-19
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
114672017-01-07 10:16:1918.349ABMagR-PTFP48_CFH12k60iPTF
114662009-01-01 00:00:0021.5ABMagR-PTFP48_CFH12k60iPTF[Last non detection]
77092017-01-07 03:05:39weikangHaynes F. Stephens, WeiKang Zheng, Alexei V. Filippenko (UC Berkeley)LOSS08:13:13.380+45:59:29.542017-01-06 12:11:2418.5Clear-2PSNNGC 25370.001491kait-17ALOSS
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
112812017-01-06 12:11:2418.518.8VegaMagClear-Other_Other18KAIT
112802016-12-29 11:29:5818.5VegaMagClear-Other_Other18KAIT[Last non detection]
Related files
FileFile TypeCommentsLast Modified (UT)Modified By
tns_2017be_atrep_7709_LOSS.jpgGraphics2017-01-07 03:05:39weikang
Classification reportings
IDTime Received (UT)SenderClassifier/sGroupClassificationRedshiftSpectraRelated FilesAssoc. GroupsEnd Prop. PeriodRemarks
7052017-01-10 21:36:53griffinGriffin Hosseinzadeh, Curtis McCully, Iair Arcavi, D. Andrew Howell, Stefano ValentiLCOGT SN-KPLBV0.0011LCOGT SN-KPThe spectrum shows a H-alpha emission at the redshift of the proposed host galaxy (z=0.001; Garrido, Marcelin, & Amram 2004, MNRAS, 349, 225; via NED) with a width corresponding to ~950 km/s (marginally resolved by the spectrograph) on top of the somewhat blue continuum of the host (SDSS DR13). Given that the discovery magnitude was 18.5 mag, corresponding to an absolute magnitude of ~-11 mag (Tully 1988, Nearby Galaxy Catalog; Sharina, Karachentsev, & Tikhonov 1999, AstL, 25, 322; via NED), we conclude that the transient is likely an extragalactic LBV outburst (i.e. a supernova impostor).
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
7152017-01-10 08:33:31FTN_FLOYDS-N3600Las Cumbres ObservatoryGriffin HosseinzadehLCOGT SN-KP tns_2017be_2017-01-10_08-33-31_FTN_FLOYDS-N_LCOGT_SN-KP.ascii tns_2017be_2017-01-10_08-33-31_FTN_FLOYDS-N_LCOGT_SN-KP.fitsObjectLCOGT SN-KP
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
7152017-01-10 08:33:31FTN / FLOYDS-N3600Las Cumbres ObservatoryGriffin HosseinzadehLCOGT SN-KP tns_2017be_2017-01-10_08-33-31_FTN_FLOYDS-N_LCOGT_SN-KP.ascii tns_2017be_2017-01-10_08-33-31_FTN_FLOYDS-N_LCOGT_SN-KP.fitsObjectLCOGT SN-KP
6470SN 2014ds08:11:16.450+25:10:47.39SN IIbNGC 2536 NY16.32014-10-11 00:00:00[Discoverer=Xu, Gao (Xingming Sky Survey); DiscoveryRef=CBET 4010; PositionRef=CBET 4010; Orig Type=IIb]
8 1901A08:11:15.050+25:12:30.60NGC 2535 NY14.71901-01-10 00:00:00[Discoverer=Reinmuth; DiscoveryRef=; PositionRef=AN 221,47; Orig Type=Unknown]
1651SN 1999gb08:10:13.699+33:57:29.81SN IInNGC 2532 NY16.11999-11-22 00:00:00[Discoverer=Lick Observatory Supernova Search; DiscoveryRef=IAUC 7316; PositionRef=IAUC 7316; Orig Type=IIn ]
2387SN 2002hn08:10:14.950+33:57:19.40SN IcNGC 2532 NY16.82002-11-05 00:00:00[Discoverer=LOTOSS; DiscoveryRef=IAUC 8009; PositionRef=IAUC 8009; Orig Type=Ic ]
48 1940E00:47:31.400-25:17:37.00NGC 253 NY141940-11-22 00:00:00[Discoverer=Zwicky; DiscoveryRef=IAUC 848; PositionRef=; Orig Type=Unknown] RA,DEC set on 2019-09-18 according to the data on http://www.rochesterastronomy.org
1842SN 2000fn08:06:57.790+08:00:19.30SN IbNGC 2526 NY18.82000-12-17 00:00:00[Discoverer=Holmes; DiscoveryRef=IAUC 7546; PositionRef=IAUC 7546; Orig Type=Ib ]
24811SN 2018gv3208:05:34.580-11:26:16.87SN Ia0.0053NGC 2525None, GaiaAlertsNone, ePESSTOGaiaAlertsOther - Other, Gaia - Gaia-photometricKeck1 - LRIS, ESO-NTT - EFOSC2-NTTYY216.5Clear-2018-01-15 16:21:06Itagaki
AT reportings
IDTime Received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery Date (UT)Discovery Mag.FilterPhotometryRelated FilesAT TypeHost NameHost RedshiftInternal NameAssoc. GroupsEnd Prop. PeriodRemarks
180762018-04-29 15:28:47Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts08:05:34.580-11:26:16.872018-03-28 10:22:0415.26G-Gaia2PSNGaia18batGaiaAlertsConfirmed SN Ia near galaxy NGC2525, aka SN2018gv
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
275032018-03-28 10:22:0415.260.2ABMagG-GaiaGaia_Gaia-photometric60Robot
275022017-11-28 10:27:5021.5ABMagG-GaiaGaia_Gaia-photometricRobot[Last non detection]
167292018-02-04 04:20:38Fumitake WatanabeFumitake WatanabeNone08:05:34.610-11:26:16.302018-01-15 16:21:0616.5Clear-2PSN
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
251692018-02-01 11:04:1113.10.1VegaMagR-CousinsOther_Other150F. Watanabe0.4-m f/10 Meili telescope (Meade Schmidt-Cassegrain telescope) + CCD (SBIG STL-1001E) at Nayoro Observatory
251682018-01-15 16:21:0616.5VegaMagClear-Other_Other
Related files
FileFile TypeCommentsLast Modified (UT)Modified By
tns_2018gv_atrep_16729.jpgGraphics2018-03-18 08:01:56Fumitake Watanabe
164982018-01-15 21:35:26K.ItagakiKoichi ItagakiNone08:05:34.610-11:26:16.302018-01-15 16:21:0616.5Clear-1PSNNGC 2525
Photometry
IDObs-date (UT)Mag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserverRemarks
247502018-01-15 16:21:0616.518.5VegaMagClear-Other_Other0.5-m / f6.8
Classification reportings
IDTime Received (UT)SenderClassifier/sGroupClassificationRedshiftSpectraRelated FilesAssoc. GroupsEnd Prop. PeriodRemarks
16482018-01-16 15:46:28ePESSTO_Bot1M. Berton, F. Bufano, A. Floers, S. Taubenberger, C. Vogl, O. Yaron, N. Knezevic on behalf of ePESSTOePESSTOSN Ia0.00531ePESSTO
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
16532018-01-16 03:27:50ESO-NTT_EFOSC2-NTT300M. Berton, F. BufanoA. Floers, S. Taubenberger, C. VoglePESSTO tns_2018gv_2018-01-16_03-27-50_ESO-NTT_EFOSC2-NTT_ePESSTO_0.asci tns_2018gv_2018-01-16_03-27-50_ESO-NTT_EFOSC2-NTT_ePESSTO_0.fitsObjectePESSTO
16432018-01-16 12:41:15msiebertM. R. Siebert, G. Dimitriadis, R. J. Foley (UCSC)NoneSN Ia0.0052741The spectrum indicates that SN 2018gv is a very young, normal Type Ia supernova. Using SNID (Blondin & Tonry, 2007, ApJ, 666, 1024), we find a good match to several Type Ia SNe 10-15 days before maximum brightness. We note that the small number of SNe Ia observed at very early phases often results in a bias to later phases. The SN was discovered at 16.5 mag, which assuming a distance modulus of 31.1 mag for the host galaxy NGC 2525 (Tully et al., 2013, AJ, 146, 86T), corresponds to an absolute magnitude of -14.8 -- or at least 4 mag below peak brightness. This further indicates that the SN is particularly young. If the SN has minimal host reddening, it will peak at V ~ 12 mag. We measure an Si II 6355 velocity of -16,800 km/s. Similarly, we measure a C II 6580 velocity of -15,300 km/s. We detect narrow Ca H&K absorption at the host-galaxy redshift, but do not detect narrow Na D.
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
16482018-01-16 09:20:20Keck1_LRIS1200M. R. Siebert, G. Dimitriadis, R. J. Foley (UCSC)G. DimitriadisNone tns_2018gv_2018-01-16_09-20-20_Keck1_LRIS.datObject
Spectra
IDObs-date (UT)Tel / InstExp-timeObserver/sReducer/sGroupSpectrum ascii FileSpectrum fits FileSpec. TypeAssoc. GroupsEnd Prop. PeriodRemarks
16482018-01-16 09:20:20Keck1 / LRIS1200M. R. Siebert, G. Dimitriadis, R. J. Foley (UCSC)G. DimitriadisNone tns_2018gv_2018-01-16_09-20-20_Keck1_LRIS.datObject
16532018-01-16 03:27:50ESO-NTT / EFOSC2-NTT300M. Berton, F. BufanoA. Floers, S. Taubenberger, C. VoglePESSTO tns_2018gv_2018-01-16_03-27-50_ESO-NTT_EFOSC2-NTT_ePESSTO_0.asci tns_2018gv_2018-01-16_03-27-50_ESO-NTT_EFOSC2-NTT_ePESSTO_0.fitsObjectePESSTO
1411SN 1998de00:48:06.881+27:37:28.49SN IaNGC 252 NY18.41998-07-23 00:00:00[Discoverer=Lick Observatory Supernova Search; DiscoveryRef=IAUC 6977; PositionRef=IAUC 6977; Orig Type=Ia ]
5495SN 2010ja08:02:28.390+09:23:40.88SN IaNGC 2513 NY17.92010-10-15 00:00:00[Discoverer=Pignata et al. (CHASE); DiscoveryRef=CBET 2514; PositionRef=CBET 2514; Orig Type=Ia ]
15 1916A00:47:54.000+19:35:49.00NGC 251 NY0000-00-00 00:00:00[Discoverer=; DiscoveryRef=; PositionRef=; Orig Type=Unknown] RA,DEC set on 2019-09-18 according to the data on http://www.rochesterastronomy.org
6473SN 2014dv07:58:30.101-14:21:15.01SN IaNGC 2501 NY162014-11-17 00:00:00[Discoverer=Zheng, Filippenko (LOSS); DiscoveryRef=CBET 4026; PositionRef=CBET 4026; Orig Type=Ia]
472 1975O07:58:21.100+25:08:06.00NGC 2487 NY15.21975-11-30 00:00:00[Discoverer=Kowal; DiscoveryRef=IAUC 2874; PositionRef=; Orig Type=Unknown] RA,DEC set on 2019-09-18 according to the data on http://www.rochesterastronomy.org
2688SN 2003gh07:45:17.930-71:24:37.30SN IaNGC 2466 NY15.72003-06-29 00:00:00[Discoverer=Monard; DiscoveryRef=IAUC 8159; PositionRef=IAUC 8159; Orig Type=Ia ]
6381SN 2014ak07:48:44.100+54:36:40.50SN IaNGC 2446 NY17.92014-03-26 00:00:00[Discoverer=Xu, Gao (Xingming Sky Survey); DiscoveryRef=CBET 3845; PositionRef=CBET 3845; Orig Type=Ia]
1650SN 1999ga07:36:16.699-69:33:21.82SN IINGC 2442 NY181999-11-19 00:00:00[Discoverer=Woodings, Martin, Williams; DiscoveryRef=IAUC 7316; PositionRef=IAUC 7316; Orig Type=II ]
6545SN 2015F07:36:15.761-69:30:23.00SN IaNGC 2442 NY16.82015-03-09 00:00:00[Discoverer=Monard; DiscoveryRef=CBET 4081; PositionRef=CBET 4081; Orig Type=Ia]
1044SN 1995E07:51:56.750+73:00:34.60SN IaNGC 2441 NY151995-02-20 00:00:00[Discoverer=Gabrijelcic; DiscoveryRef=IAUC 6137; PositionRef=IAUC 6138; Orig Type=Ia ]

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