2018 Supernova Boneyard

Welcome to the Boneyard.   On this page you will find entries for objects that have been confirmed as Cataclysmic variables, asteriods (otherwise known as Vermin of the sky), or some other non extragalactic event.   Why keep them around? Because you never know when something like this will come back to life...

AT2018esj (= 2000FX94), TNS discovered 2018/08/06.913 by Brosio
Found in NGC 7585 at R.A. = 23h17m53s.900, Decl. = -04°40'57".00
Located 0".0 east and 0".0 north of the center of NGC 7585 (Discovery image)
Mag 16.8:8/6, Type MP (References: ATEL 11939)

AT2018epd (= mrk06), TNS discovered 2018/08/02.119 by Malhar R. Kendurkar at R.A. = 22h36m29s.750, Decl. = +34°03'26".78 (near Stephan's Quintet) Mag 19.7:8/2, Type HP (Discovery image) (Stan Howerton image unconfirmed)

AT2018epb (= mrk05), TNS discovered 2018/08/02.119 by Malhar R. Kendurkar at R.A. = 22h36m45s.280, Decl. = +34°01'31".45 (near Stephan's Quintet) Mag 19.0:8/2, Type HP (Discovery image) (Stan Howerton image unconfirmed)

AT2018eox (= mrk04), TNS discovered 2018/08/02.119 by Malhar R. Kendurkar
Found in NGC 7318 at R.A. = 22h36m01s.090, Decl. = +33°58'50".27 (in Stephan's Quintet)
Located 0".0 east and 0".0 north of the center of NGC 7318 (Discovery image) (Stan Howerton image unconfirmed)
Mag 19.0:8/2, Type HP (zhost=0.002610)

AT2018eaj (= 3UC082-152547) (= SSS:J131017.3-490647), TNS discovered 2018/07/18.498 by Jean-Claude Merlin at R.A. = 13h10m17s.370, Decl. = -49°06'47".40 (Discovery image) (Jean-Claude Merlin image) Mag 13.8:7/18, Type LPV

AT2018dzv (= KSN2017N), TNS discovered 2018/06/26.000 by Narayan
Found in an anonymous galaxy at R.A. = 08h45m04s.000, Decl. = +13°53'20".00
Located 0".0 east and 0".0 north of the center of the host galaxy
Mag 19.0:6/26, Type QSO? (zhost=0.159000)

AT2018dyb (= ASASSN-18pg), TNS discovered 2018/07/11.230 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in WKK 6047 at R.A. = 16h10m58s.770, Decl. = -60°55'23".16
Located 0".0 east and 0".0 north of the center of WKK 6047 (Discovery image)
Mag 16.5:7/11, Type TDE (z=0.018) (zhost=0.017932) (References: ATEL 11865)

AT2018ebi (= ATLAS18sju), TNS discovered 2018/07/17.322 by ATLAS at R.A. = 14h41m51s.080, Decl. = -14°12'20".15 Mag 15.4:7/17, Type unconfirmed (Malhar R. Kendurkar image unconfirmed) (Note: possible moon of Jupiter)

AT2018dhs (= GSC 06352-01541), TNS discovered 2018/07/11.983 by Antonino Brosio
Found in an anonymous galaxy at R.A. = 20h55m36s.8, Decl. = -18°56'55".0
Located 0".2 east and 0".1 south of the center of the host galaxy (Discovery image) (Antonino Brosio image) (Malhar R. Kendurkar image) (Gregor Krannich image unconfirmed) (Malhar R. Kendurkar image)
Mag 14.1:7/11, Type * (zhost=0.027219)
Note: foreground star

AT2018cmp (= ASASSN-18mm), ATEL 11730 discovered 2018/06/11.140 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 23h31m09s.780, Decl. = -29°57'44".98
Located 0".0 west and 0".1 north of the center of host galaxy (Discovery image)
Mag 17.9:6/11, Type AGN (zhost=0.050400) (References: ATEL 11864, TNS, OSC)

AT2018ddp, TNS discovered 2018/07/06.001 by Cacella
Found in an anonymous galaxy at R.A. = 13h41m59s.480, Decl. = -34°14'57".36
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image) (Confirmation image)
Mag 16.6:7/6, Type HPM

AT2018cor, (= kait-18Z) TNS discovered 2018/06/15.440 by Lick Observatory Supernova Search
Found in an anonymous galaxy at R.A. = 18h43m08s.280, Decl. = +60°38'04".56
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image) (Cedric Raguenaud image)
Mag 21.1:6/25 (18.8:6/15), Type QSO (z=1.78) (References: OSC)

AT2018cex (= ASASSN-18lp) (= ATLAS18qmq) (= Gaia18boo) (= MLS180619:143739-091309) (= PS18apt), TNS discovered 2018/06/05.240 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 14h37m39s.340, Decl. = -09°13'09".26
Located 0".0 east and 0".0 north of the center of the host galaxy (MLS image) (PS1 image)
Mag 18.5:6/17 (16.0:6/5), Type Nova (References: Gaia observations)

AT2018cbx, TNS discovered 2018/05/30.451 by R. Gagliano, R. Post, E. Weinberg, Jack Newton, and Tim Puckett
Found in NGC 7553 at R.A. = 23h15m33s.000, Decl. = +19°02'45".90
Located 0".0 east and 0".0 north of the center of NGC 7553 (Discovery image) (Enrico Prosperi image)
Mag 17.6:5/30, Type unconfirmed (zhost=0.017400)

AT2018bzo (= ASASSN-18lg) (= Gaia18blt), ATEL 11686 discovered 2018/05/27.050 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 13h03m58s.010, Decl. = -30°24'05".68
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image) (Roland Santallo image)
Mag 17.9:6/6 (16.3:5/27), Type CV (References: TNS, Gaia observations)

AT2018bzm, TNS discovered 2018/05/25.647 by Galaxy Zoo
Found in an IC 1781 at R.A. = 02h06m53s.230, Decl. = -00°31'23".16
Located 0".0 east and 0".0 north of the center of the IC 1781
Mag 18.0:5/25, Type removed (zhost=0.0.043393)

AT2018bkv, (= 535185 N28) TNS discovered 2018/05/09.462 by SkyMapper at R.A. = 11h55m50s.470, Decl. = -02°15'00".72 Mag 21.0:5/9, Type removed (zhost=0.085383) (host anonymous galaxy)

AT2018bko, (= DLT18w) TNS discovered 2018/05/12.966 by DLT40
Found in an anonymous galaxy at R.A. = 09h12m26s.560, Decl. = -58°46'32".15
Located 0".0 east and 0".0 north of the center of the host galaxy
Mag 17.0:5/12, Type * (References: ATEL 11639)

AT2018bkn (= PTSS-18enq) (= ASASSN-18kc) (= Gaia18bmd) TNS discovered 2018/05/12.576 by PMO-Tsinghua Supernova Survey (PTSS)
Found in an anonymous galaxy at R.A. = 13h08m28s.780, Decl. = -09°58'56".87
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 18.6:6/8 (16.1:5/12), Type CV (References: Gaia observations)

AT2018beg, ATEL 11600 discovered 2018/05/03.349 by DLT40
Found in ESO 221-G13 at R.A. = 13h51m20s.090, Decl. = -48°01'28".85
Located 152".3 west and 6".9 north of the center of ESO 221-G13
Mag 17.9:5/3, Type * (zhost=0.012075) (References: ATEL 11613, TNS)

AT2018bck, TNS discovered 2018/04/28.537 by Masaki Tsuboi
Found in NGC 2592 at R.A. = 08h27m07s.700, Decl. = +25°58'03".80
Located 4".0 west and 9".6 south of the center of NGC 2592 (Discovery image)
Mag 16.9:4/28, Type unconfirmed (zhost=0.006601)

AT2018bcb, (= ASASSN-18jd) TNS discovered 2018/04/27.120 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 22h43m42s.910, Decl. = -16°59'08".05
Located 0".0 east and 0".0 north of the center of the host galaxy
Mag 17.5:4/27, Type AGN (z=0.120) (References: ATEL 11613)

AT2018avo, TNS discovered 2018/04/16.922 by Jordi Camarasa
Found in NGC 4203 at R.A. = 12h15m01s.820, Decl. = +33°10'38".40
Located 0".0 east and 0".0 north of the center of NGC 4203 (Discovery image) (Andrea Mantero image unconfirmed) (Andrea Mantero image unconfirmed) (Robert Spellman image unconfirmed)
Mag 17.4:4/16, Type HP (zhost=0.003623)

AT2018ave, (= ASASSN-18ib) ATEL 11541 discovered 2018/04/14.350 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 20h22m02s.346, Decl. = -18°22'59".11
Located 0".2 east and 0".3 south of the center of host galaxy (Discovery image) (Joseph Brimacombe image) (Roland Santallo image)
Mag 17.7:4/14, Type AGN (z=0.056) (zhost=0.054905) (References: ATEL 11560, TNS)

AT2018avh, (= ASASSN-18ie) ATEL 11595 discovered 2018/04/16.260 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in VIII Zw 260W at R.A. = 13h11m39s.382, Decl. = +06°19'10".288
Located 0".0 east and 0".0 north of the center of VIII Zw 260W (Discovery image)
Mag 17.4:4/16, Type galaxy (zhost=0.045760) (References: ATEL 11552, TNS)

GRB 171205A, ATEL 11514 discovered 2018/04/07.700 by MASTER robotic Net at R.A. = 11h09m39s.120, Decl. = -12°35'06".90 Mag 18.3:4/7, Type * (offset 9.3) (zhost=0.037022) (host anonymous galaxy) (Discovery image) (References: ATEL 11529)

AT2018aqc, TNS discovered 2018/04/03.893 by Jordi Camarasa
Found in NGC 3655 at R.A. = 11h22m54s.890, Decl. = +16°35'23".00
Located 3".9 east and 1".1 south of the center of NGC 3655 (K. Sarneczky image) (Pierre Ponsard image) (Rafael G. Farfán image) (Jose Maria Fernadez Andujar image)
Mag 13.8:4/3, Type * (foreground galactic star) (zhost=0.004913) (References: ATEL 11550; SN 2002ji)

AT2018apl, (= ASASSN-18gq) ATEL 11500 discovered 2018/04/03.320 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 325-G11 at R.A. = 13h45m04s.000, Decl. = -41°52'25".00
Located 44".7 east and 45".5 south of the center of ESO 325-G11 (Discovery image) (Diego Canosa image) (Stan Howerton image) (Joseph Brimacombe image)
Mag 16.7:4/5 (16.3:4/3), Type CV (z=0) (zhost=0.001818) (References: ATEL 11509, ATEL 11501, TNS)

MASTER OT J150803.15-270155.0, ATEL 11450 discovered 2018/03/18.073 by MASTER robotic Net
Found in an anonymous galaxy at R.A. = 15h08m03s.150, Decl. = -27°01'55".00
Located 1".0 east and 0".8 north of the center of the host galaxy (Discovery image)
Mag 17.1:3/18, Type AGN (z=0.179) (zhost=0.178617) (References: ATEL 11613, OSC)

AT2018adh (= ASASSN-18fe), ATEL 11459 discovered 2018/03/09.200 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in ESO 368-G2 at R.A. = 07h28m27s.537, Decl. = -37°25'13".04
Located 0".0 east and 0".0 north of the center of ESO 368-G2 (Discovery image)
Mag 16.4:3/9, Type CV (zhost=0.009672) (References: ATEL 11463, TNS)

AT2018afa, TNS discovered 2018/03/13.392 by P. Clay Sherrod
Found in NGC 5308 at R.A. = 13h47m07s.140, Decl. = +60°57'54".03
Located 0".0 east and 0".0 north of the center of NGC 5308 (Discovery image) (Andrea Mantero image)
Mag 18.8:3/13, Type * (zhost=0.006665) (offset 58.14SE) (References: SN 1996bk)

AT2018xc, (= ASASSN-18di) TNS discovered 2018/02/20.098 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 09h58m30s.510, Decl. = +14°55'39".00
Located 0".0 east and 0".0 north of the center of the host galaxy (Marc Deldem image unconfirmed)
Mag 14.3:2/20, Type flare

AT2018wz, TNS discovered 2018/02/16.097 by Paolo Campaner and Fabio Briganti (ISSP)
Found in MCG +1-32-6 at R.A. = 12h19m51s.000, Decl. = +06°59'28".00 (= PGC 39725)
Located 0".0 east and 0".0 north of the center of MCG +1-32-6 (Discovery image) (Paolo Campaner image unconfirmed)
Mag 18.3:2/16, Type unconfirmed

AT2018tl, (= ASASSN-18ci) (= Gaia18alh) TNS discovered 2018/02/13.130 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 06h42m33s.274, Decl. = +40°02'33".22
Located 0".0 east and 0".0 north of the center of the host galaxy (Rafael G. Farfán image) (Masanori Mizutani image)
Mag 17.1:2/16 (16.3:2/12), Type CV (References: Gaia observations)

AT2018tg, TNS discovered 2018/02/12.791 by Ron Arbour
Found in NGC 1 at R.A. = 00h07m11s.520, Decl. = +27°41'46".00
Located 0".0 east and 0".0 north of the center of NGC 1 (Manfred Mrotzek image)
Mag 16.0:2/12, Type HP (zhost=0.015177) (double exposure)

AT2018rv (= CP Dra), TNS discovered 2018/02/11.267 by Patrick Wiggins
Found in NGC 3147 at R.A. = 10h15m39s.900, Decl. = +73°26'04".83
Located 315".7 west and 122".1 north of the center of NGC 3147 (Discovery image) (Giancarlo Cortini image)
Mag 15.0:2/11, Type Nova (zhost=0.009346) (References: SN 2008fv, 2006gi, 1997bq, 1972H)

AT2018qq, (= ASASSN-18cd) ATEL 11293 discovered 2018/02/10.200 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in LEDA 749345 at R.A. = 09h58m32s.853, Decl. = -27°49'50".86
Located 0".0 east and 0".0 north of the center of LEDA 749345 (Discovery image)
Mag 17.0:2/10, Type * (offset 22.6) (References: ATEL 11299, TNS)

AT2018ly, (= ASASSN-18bp) TNS discovered 2018/01/29.069 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 08h46m44s.800, Decl. = -13°49'00".84
Located 0".0 east and 0".0 north of the center of the host galaxy
Mag 16.5:1/29, Type CV (References: ATEL 11258, OSC)

AT2018iz, (= ASASSN-18ay) TNS discovered 2018/01/20.130 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 05h07m01s.440, Decl. = -35°55'13".69
Located 0".0 east and 0".0 north of the center of the host galaxy
Mag 13.5:1/20, Type CV (References: OSC)

AT2018hx, (= PSP18A) TNS discovered 2018/01/17.542 by Peiyuan Sun and Xing Gao
Found in M31 at R.A. = 00h40m59s.320, Decl. = +41°37'37".50
Located 0".0 east and 0".0 north of the center of M31
Mag 16.8:1/17, Type HP

AT2018eq (= Nova M31 2018-01b?) (= PNV J00431577+4118393), CBAT TOCP discovered 2018/01/12.724 by Raffaele Belligoli
Found in M31 at R.A. = 00h43m15s.770, Decl. = +41°18'39".30
Located 358".0 east and 153".0 north of the center of M31 (Discovery image corrupted?) (Paolo Campaner image) (Robert Spellman image)
Mag 17.8:1/12, Type CV (References: ATEL 11168, TNS)



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