Bright Supernovae - 2018

This data comes from IAU Circulars and occasionally more data will be provided on IAU's Astronomical Headlines page. An archive of the 2018 updates to this page is available.

This is a partial list of the SN discovered in 2018. Since 2018 is still ongoing, please look at the main page for the latest data.   In previous years I tried to keep the yearly archive alphabetically sorted by CBAT supernova name.   Since that is no longer applicable, I am sorting this archive by "first observed" date, which I have listed as the discovery date.   Note that Extra galactic Novae have been moved to a special Extra galactic novae page.   Mistakes (Galactic variables, asteroids, unconfirmed, etc) are in the boneyard.   I also maintain an archive of the updates.

AT2018mn, (= C16-0012) ATEL 11344 discovered 2018/01/22.727 by Kepler Extra-Galactic Survey (KEGS) at R.A. = 08h50m07s.570, Decl. = +13°18'50".00 (host anonymous galaxy) (Discovery image) Mag 20.8:1/22, Type unknown (zhost=0.040000) (offset 7.3) (References: TNS, OSC)

2018mc, (= ASASSN-18bq) ATEL 11260 discovered 2018/01/29.510 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 18h01m00s.832, Decl. = +61°41'46".92
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 17.4:1/29, Type IIb (z=0.035) (References: ATEL 11305, TNS OSC)

2018lm, (= ASASSN-18bm) ATEL 11260 discovered 2018/01/28.300 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 10h32m04s.874, Decl. = -36°37'29".29
Located 1".2 west and 9".0 north of the center of host galaxy (Discovery image)
Mag 17.5:1/28, Type Ia (z=0.045) (References: ATEL 11258, TNS OSC)

MASTER OT J141021.86+391928.4, ATEL 11225 discovered 2018/01/11.892 by MASTER robotic Net at R.A. = 03h00m57s.160, Decl. = -66°25'23".10 Mag 18.3:1/11, Type unknown (References: OSC)

2018kq, (= ASASSN-18bj) ATEL 11234 discovered 2018/01/24.330 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in KUG 0921+406 at R.A. = 09h24m57s.269, Decl. = +40°23'56".14
Located 7".1 east and 2".3 south of the center of KUG 0921+406 (Discovery image) (Yuji Tanaka image) (Rafael G. Farfán image) (Enrico Prosperi image)
Mag 17.1:1/29, Type Ic-BL (z=0.027) (zhost=0.027804) (offset 7.46) (References: TNS, OSC)

2018ka, TNS discovered 2018/01/12.773 by R. Gagliano, R. Post, E. Weinberg, Jack Newton, and Tim Puckett
Found in NGC 3408 at R.A. = 10h52m11s.200, Decl. = +58°26'24".60
Located 3".7 west and 7".3 north of the center of NGC 3408 (Discovery image) (Kunihiro Shima image prediscovery)
Mag 19.4:1/17 (18.2:1/12), Type Ia (z=0.032) (zhost=0.031580) (References: ATEL 11230, OSC)

AT2018jz (= OGLE18jz), TNS discovered 2018/01/23.162 by OGLE-IV wide field survey at R.A. = 05h05m35s.240, Decl. = -62°43'36".90 Mag 18.4:1/23, Type unknown (References: OSC)

AT2018jt, (= ASASSN-18be) ATEL 11234 discovered 2018/01/22.110 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 06h13m11s.538, Decl. = -49°06'11".67
Located 8".6 east and 7".3 south of the center of host galaxy (Discovery image)
Mag 17.9:1/22, Type unknown (offset 11.28) (References: TNS, OSC)

2018jm, (= ASASSN-18ba) ATEL 11234 discovered 2018/01/20.000 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 05h08m11s.956, Decl. = -54°38'41".22
Located 0".5 west and 1".4 north of the center of host galaxy (Discovery image)
Mag 18.1:1/20, Type Ia (z=0.064) (offset 1.36) (References: ATEL 11258, TNS, OSC)

AT2018iy, (= ATLAS18ebg) TNS discovered 2018/01/12.542 by ATLAS at R.A. = 11h34m52s.580, Decl. = -13°54'35".51 Mag 18.8:1/12, Type unknown (References: OSC)

AT2018ir, (= ASASSN-18ax) ATEL 11234 discovered 2018/01/19.260 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 07h42m47s.430, Decl. = +19°09'48".10
Located 7".1 east and 7".6 south of the center of host galaxy (Discovery image)
Mag 18.3:1/19, Type unknown (offset 10.4) (References: TNS, OSC)

2018if, TNS discovered 2018/01/18.800 by Tsinghua-NAOC Transient Survey (TNTS)
Found in an anonymous galaxy at R.A. = 09h14m23s.840, Decl. = +49°35'32".90
Located 0".1 west and 0".5 south of the center of host galaxy
Mag 17.6:1/18, Type Ic-BL (z=0.031) (References: ATEL 11213, ATEL 11295, OSC)

AT2018hy, (= ASASSN-18av) ATEL 11234 discovered 2018/01/18.060 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 01h40m07s.980, Decl. = -06°25'40".73
Located 6".5 east and 1".8 north of the center of host galaxy (Discovery image)
Mag 17.3:1/18, Type unknown (zhost=0.051165) (offset 0.7) (References: TNS, OSC)

AT2018hw (= MLS180116:020844+024237), TNS discovered 2018/01/15.135 by R. Gagliano, R. Post, E. Weinberg, Jack Newton, and Tim Puckett
Found in PGC 1235370 at R.A. = 02h08m44s.150, Decl. = +02°42'37".10
Located 0".0 east and 0".0 north of the center of PGC 1235370 (Discovery image) (MLS image)
Mag 18.7:1/16 (18.6:1/15), Type unknown (References: OSC)

2018hv, (= ASASSN-18ar) ATEL 11234 discovered 2018/01/15.180 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 03h30m11s.146, Decl. = -13°31'22".85
Located 3".0 west and 0".3 north of the center of host galaxy (Discovery image)
Mag 18.4:1/22 (18.0:1/15), Type Ia (zhost=0.040978) (offset 3.01) (References: ATEL 11188, TNS, Gaia observations, OSC)

AT2018hn (= SNhunt342) (= Gaia18agd), TNS discovered 2018/01/15.484 by Catalina Real-Time Transient Survey and Mirco Villi
Found in NGC 5019 at R.A. = 13h12m41s.650, Decl. = +04°43'54".34
Located 11".0 west and 7".5 north of the center of NGC 5019 (Discovery image) (Stan Howerton image)
Mag 18.0:1/21 (17.7:1/18), Type unknown (zhost=0.021444) (References: Gaia observations, OSC)

AT2018hj, (= ASASSN-18aq) ATEL 11234 discovered 2018/01/16.110 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 04h33m27s.219, Decl. = -38°41'34".97
Located 4".1 east and 1".6 south of the center of host galaxy (Discovery image)
Mag 18.0:1/16, Type unknown (offset 4.49) (References: TNS, OSC)

AT2018go (= OGLE18go), TNS discovered 2018/01/11.151 by OGLE page
Found in an anonymous galaxy at R.A. = 03h33m13s.030, Decl. = -63°30'21".20
Located 0".0 east and 0".0 north of the center of the host galaxy (Discovery image)
Mag 19.3:1/11, Type unknown (zhost=0.033957) (References: OSC)

2018gm, (= ASASSN-18ao) ATEL 11178 discovered 2018/01/14.320 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 10h21m19s.150, Decl. = +20°54'37".33
Located 0".3 west and 0".8 north of the center of host galaxy (Discovery image)
Mag 18.0:1/14, Type Ia (z=0.058) (References: ATEL 11181, (ATEL 11180 corrected), TNS, OSC)

2018gl, (= ASASSN-18an) ATEL 11178 discovered 2018/01/13.569 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in NGC 3070 at R.A. = 09h58m06s.110, Decl. = +10°21'33".61
Located 12".3 west and 1".6 south of the center of NGC 3070 (Discovery image) (Kunihiro Shima image) (Yuji Tanaka image) (Diego Canosa image) (Rafael G. Farfán image) (Joseph Brimacombe image)
Mag 16.6:1/27, Type Ia (z=0.018) (zhost=0.017906) (offset 12.4) (References: ATEL 11169, TNS, OSC)

AT2018er (= SNhunt339) (= PS18ea), TNS discovered 2018/01/10.378 by Catalina Real-Time Transient Survey and Mirco Villi
Found in PGC 1753403 at R.A. = 04h53m17s.040, Decl. = +25°52'23".52
Located 0".0 east and 0".0 north of the center of PGC 1753403 (Discovery image) (PS1 image)
Mag 20.0:1/12, Type unknown (zhost=0.033990) (offset 11.6) (References: OSC)

2018ep, (= ASASSN-18al) (= Gaia18aee) (= PS18hi) ATEL 11178 discovered 2018/01/12.385 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in IC 2777 at R.A. = 11h22m40s.763, Decl. = +12°01'31".66
Located 1".5 east and 0".7 south of the center of IC 2777 (Discovery image) (Kunihiro Shima image) (PS1 image) (Joseph Brimacombe image)
Mag 17.6:1/20 (16.0:1/13), Type Ia (z=0.040) (zhost=0.039841) (References: ATEL 11170, ATEL 11171, TNS, Gaia observations, OSC)

2018ec, ATEL 11156 discovered 2018/01/03.400 by SUNBIRD
Found in NGC 3256 at R.A. = 10h27m50s.770, Decl. = -43°54'06".30
Located 5".2 west and 7".7 north of the center of NGC 3256
Mag 15.1:1/3, Type Ic (z=0.009) (zhost=0.009354) (References: ATEL 11160, ATEL 11224, ATEL 11350, TNS, OSC; SN PSN J10275082-4354034, 2001db)

2018dx, (= ASASSN-18aj) ATEL 11178 discovered 2018/01/10.290 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 09h16m12s.286, Decl. = +39°03'42".78
Located 0".4 east and 0".9 north of the center of host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 17.4:1/12 (17.3:1/10), Type Ia (z=0.053) (offset 0.98) (References: ATEL 11159, ATEL 11161, TNS, OSC)

2018dt, TNS discovered 2018/01/08.800 by Tsinghua-NAOC Transient Survey (TNTS)
Found in an anonymous galaxy at R.A. = 08h53m22s.170, Decl. = +48°59'44".40
Located 1".0 east and 1".0 north of the center of the host galaxy
Mag 18.6:1/8, Type Ia (z=0.08) (References: ATEL 11204, OSC)

AT2018ds (= ASASSN-18ag) (= PS18fu), ATEL 11178 discovered 2018/01/09.450 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in MCG +7-30-65 at R.A. = 14h48m53s.568, Decl. = +38°46'03".70
Located 3".7 west and 2".0 south of the center of MCG +7-30-65 (Discovery image) (PS1 image) (Joseph Brimacombe image)
Mag 18.1:1/31 (16.9:1/9), Type Ia (zhost=0.031610) (offset 4.12) (References: ATEL 11159, TNS, OSC)

2018bs, (= ASASSN-18af) ATEL 11178 discovered 2018/01/09.080 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 03h23m20s.738, Decl. = -22°07'00".67
Located 6".0 west and 1".6 north of the center of host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 18.0:1/9, Type Ia (z=0.07) (offset 6.21) (References: ATEL 11170, TNS, OSC)

2018br, (= ASASSN-18ae) ATEL 11178 discovered 2018/01/06.060 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 03h07m52s.532, Decl. = -45°44'22".74
Located 7".5 west and 0".4 north of the center of host galaxy (Discovery image) (Joseph Brimacombe image)
Mag 18.5:1/9 (18.1:1/6), Type Ia (z=0.063) (zhost=0.062810) (offset 7.51) (References: ATEL 11192, TNS, OSC)

2018bq, (= ASASSN-18ac) (= PS18eu) (= AT2017jzz) ATEL 11145 discovered 2017/12/30.576 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 11h05m59s.604, Decl. = -12°31'37".69
Located 0".5 east and 0".3 south of the center of host galaxy (Discovery image) (Joseph Brimacombe image) (PS1 image prediscovery)
Mag 16.1:1/8, Type Ia (zhost=0.025628) (References: ATEL 11154, TNS, OSC)

2018bl (= Gaia18abp), TNS discovered 2018/01/06.440 by Gaia Photometric Science Alerts programme
Found in ESO 18-G9 at R.A. = 08h24m11s.590, Decl. = -77°47'16".55
Located 11".7 east and 19".3 south of the center of ESO 18-G9
Mag 16.8:1/6, Type II (z=0.018) (zhost=0.017816) (References: ATEL 11171, Gaia observations, OSC)

2018bi (= PS18bq), TNS discovered 2018/01/05.292 by Jaroslaw Grzegorzek
Found in UGC 1792 at R.A. = 02h19m53s.280, Decl. = +29°02'02".70
Located 7".4 east and 7".8 south of the center of UGC 1792 (Discovery image) (PS1 image) (Marco Russiani image) (Rafael G. Farfán image) (Claudio Balcon image) (Kunihiro Shima image)
Mag 18.3:1/15 (17.1:1/7), Type Ia (z=0.017) (zhost=0.016635) (References: ATEL 11168, ATEL 11170, OSC)

AT2018bh, (= ASASSN-18ab) ATEL 11145 discovered 2018/01/06.810 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 00h57m40s.085, Decl. = -41°52'23".64
Located 1".9 west and 5".6 north of the center of host galaxy (Discovery image) (Joseph Brimaacombe image)
Mag 17.2:1/6, Type unknown (zhost=0.024517) (References: TNS, OSC)

2018bg (= ASASSN-18aa) (= Gaia18aek), ATEL 11145 discovered 2018/01/07.020 by All Sky Automated Survey for SuperNovae (ASAS-SN)
Found in an anonymous galaxy at R.A. = 05h11m47s.896, Decl. = -40°11'43".29
Located 0".8 east and 1".0 south of the center of host galaxy (Discovery image) (Roland Santallo image) (Joseph Brimacombe image)
Mag 16.9:1/17 (16.5:1/7), Type Ia (z=0.03) (References: ATEL 11160, TNS, Gaia observations, OSC)

2018bf (= ATLAS18abb), TNS discovered 2018/01/01.219 by ATLAS at R.A. = 22h57m46s.610, Decl. = +25°38'33".56 Mag 18.8:1/1, Type Ic (z=0.025) (References: ATEL 11164, OSC)

2018be (= OGLE18be), TNS discovered 2018/01/06.049 by OGLE page at R.A. = 01h08m49s.000, Decl. = -76°42'47".60 Mag 19.4:1/6, Type Ia (z=0.151) (offset 0.3) (Discovery image) (References: ATEL 11316, ATEL 11192, OSC)

AT2018O (= OGLE18O), TNS discovered 2018/01/03.338 by OGLE page at R.A. = 06h00m41s.950, Decl. = -63°50'23".20 Mag 19.4:1/3, Type unknown (offset 6.0) (Discovery image) (References: OSC)

AT2018L (= Gaia18abk) (= PS18co) (= ATLAS17nzp), TNS discovered 2017/12/25.844 by R. Gagliano, R. Post, E. Weinberg, Jack Newton, and Tim Puckett
Found in NGC 3214 at R.A. = 10h23m09s.240, Decl. = +57°02'34".90
Located 3".6 east and 14".2 north of the center of NGC 3214 (Discovery image) (PS1 image) (Kunihiro Shima image) (Rafael G. Farfán image)
Mag 16.6:1/12, Type Ia (z=0.029) (zhost=0.025820) (References: Gaia observations, OSC)

2018K, TNS discovered 2018/01/03.135 by R. Gagliano, R. Post, E. Weinberg, Jack Newton, and Tim Puckett
Found in UGC 1303 at R.A. = 01h50m50s.480, Decl. = +48°21'13".70
Located 20".9 west and 7".2 north of the center of UGC 1303 (Discovery image (mirror)) (Masanori Mizutani image) (Rafael G. Farfán image)
Mag 17.2:1/15, Type Ia-91T (z=0.022) (zhost=0.023922) (References: ATEL 11138, OSC)


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