List of novae in 2019

class="infobox" style="width: 250px;"

Host galaxies of novae discovered in 2018

{{#invoke:Chart

|pie chart

|radius = 125

|background = lightgray

|slices =

( 16 : Milky Way : lightgrey )

( 11 : Andromeda Galaxy : yellow )

( 2 : Messier 81 : lightblue )

( 1 : Triangulum Galaxy : green )

( 1 : Whirlpool Galaxy : purple )

|percent = true

}}

The following is a list of all novae that are known to have occurred in 2019. A nova is an energetic astronomical event caused by a white dwarf accreting matter from a star it is orbiting (typically a red giant, whose outer layers are more weakly attached than smaller, denser stars) Alternatively, novae can be caused by a pair of stars merging with each other, however such events are vastly less common than novae caused by white dwarfs.

In 2019, at least sixteen Milky Way novae were discovered, eight of which were dwarf nova eruptions, one of the variable system V386 Serpentis, one from the known nova-like system 2E 1516.6-6827, and four from previously unidentified white dwarf binaries. One of these binaries, TCP J18200437-1033071, may have possibly been involved in another outburst in 1951. The recurrent nova V3890 Sgr, which had been seen to erupt in 1962 and 1990, also erupted again in 2019.

{{Location map+

| Sky

| width = 1000

| float = center

| border =

| caption = The sky locations of the known galactic novae in 2019. Red dots are classical novae, orange dots are dwarf novae, yellow dots are luminous red novae, and blue dots are recurring novae.

| alt =

| relief =

| AlternativeMap =

| overlay_image =

| places =

{{Location map~|Sky|mark = Orange pog.svg|lat_deg = -1.0398|lon_deg = -62.6401}}

{{Location map~|Sky|mark = Orange pog.svg|lat_deg = -9.5950|lon_deg = 80.6125}}

{{Location map~|Sky|mark = Orange pog.svg|lat_deg = 47.8003|lon_deg = 95.2330}}

{{Location map~|Sky|mark = Orange pog.svg|lat_deg = 65.0769|lon_deg = 92.0255}}

{{Location map~|Sky|mark = Red pog.svg |lat_deg = -16.7049|lon_deg = -98.2429}}

{{Location map~|Sky|mark = Orange pog.svg|lat_deg = -10.5524|lon_deg = -95.0175}}

{{Location map~|Sky|mark = Orange pog.svg|lat_deg = -68.6407|lon_deg = -50.3618}}

{{Location map~|Sky|mark = Red pog.svg |lat_deg = -36.1392|lon_deg = -76.8924}}

{{Location map~|Sky|mark = Orange pog.svg|lat_deg = 48.1475|lon_deg = 23.9888}}

{{Location map~|Sky|mark = Red pog.svg |lat_deg = 12.2070|lon_deg = 87.5106}}

{{Location map~|Sky|mark = Red pog.svg |lat_deg = 27.7058|lon_deg = -118.0344}}

{{Location map~|Sky|mark = Blue pog.svg |lat_deg = -24.0191|lon_deg = -97.6804}}

{{Location map~|Sky|mark = Red pog.svg |lat_deg = -29.0631|lon_deg = -84.6326}}

{{Location map~|Sky|mark = Red pog.svg |lat_deg = -35.1731|lon_deg = -84.2897}}

{{Location map~|Sky|mark = Red pog.svg |lat_deg = 48.1812|lon_deg = -137.3564}}

{{Location map~|Sky|mark = Red pog.svg |lat_deg = -10.4283|lon_deg = -99.9987}}

}}

List of novae in 2019

=In the Milky Way=

class="wikitable sortable"

!Nova name

!Discovery date

!Constellation

!Right ascension

!Declination

!Peak Brightness (v){{cite web |last1=Mukai |first1=Koji |title=Recent Novae |url=https://asd.gsfc.nasa.gov/Koji.Mukai/novae/novae.html |website=asd.gsfc.nasa.gov |accessdate=25 January 2019}}

!Distance
(light years){{Cite DR2}}

!Absolute
magnitude (v)

!Nova type

!Origin system
identified?

!Companion star
spectral typeIn most cases, the spectral type is estimated based on the absolute magnitude

V386 Serpentis{{cite web |title=CBET 4603 : 20190120 : V386 SERPENTIS = TCP J16103359-0102227 |url=http://www.cbat.eps.harvard.edu/cbet/004600/CBET004603.txt |website=Central Bureau for Astronomical Telegrams |publisher=IAU |accessdate=25 January 2019}}

| 2019/01/18

| Serpens

| {{RA|16|10|33.63}}

| {{DEC

01|02|23.2}}

| 10.4

| {{val|785|77|64}}

| {{val|3.5|0.2|0.2}}

| Dwarf nova

| Yes

| White dwarf

TCP J06373299-0935420

| 2019/02/21

| Monoceros

| {{RA|06|37|33.01}}

| {{DEC

09|35|42.2}}

| 10.4

| {{val|1200|230|170}}

| {{val|2.6|0.3|0.4}}

| Dwarf nova

| Yes

| White dwarf

TCP J05390410+4748030

| 2019/03/14

| Auriga

| {{RA|05|39|04.09}}

| {{DEC|47|48|00.9}}

| 11.3

| {{val|1060|220|150}}

| {{val|3.7|0.4|0.4}}

| Dwarf nova

| Yes

| White dwarf

TCP J05515391+6504346

| 2019/04/01

| Camelopardalis

| {{RA|05|51|53.87}}

| {{DEC|65|04|36.9}}

| 13.2

| {{val|3000|20000|1600}}

| {{val|3.3|1.6|4.3}}

| Dwarf nova

| Yes

| White dwarf

TCP J18325790-1642211

| 2019/04/02

| Sagittarius

| {{RA|18|32|58.30}}

| {{DEC

16|42|17.6}}

| 12.5

| {{val|99999|70000|99999}}

| {{val

4.9|2.6|1.5}}

| Classical

| Yes

| K5III

TCP J18200437-1033071

| 2019/04/08

| Serpens

| {{RA|18|20|04.21}}

| {{DEC

10|33|08.7}}

| 13.3

| {{val|10000|5000|5000}}

| {{val|0.9|1.5|0.9}}

| Dwarf nova

| Yes

| White dwarf

PNV J15212688-6838261

| 2019/05/11

| Triangulum Australe

| {{RA|15|21|26.84}}

| {{DEC

68|38|26.6}}

| 13.6

| {{val|3250|420|330}}

| {{val|3.6|0.2|0.3}}

| Dwarf nova

| Yes

| K?V

AT 2019fez

| 2019/05/13

| Scorpius

| {{RA|17|07|34.19}}

| {{DEC

36|08|21.3}}

| 13.1

| ?

| Classical

| No

| ?

TCP J10240289+4808512

| 2019/05/25

| Ursa Major

| {{RA|10|24|02.70}}

| {{DEC|48|08|51.0}}

| 11.8

| {{val|1090|380|300}}

| {{val|4.2|0.2|0.3}}

| Dwarf nova

| Yes

| White dwarf

V2860 Ori

| 2019/08/07

| Orion

| {{RA|06|09|57.45}}

| {{DEC|12|12|25.2}}

| 9.4

| ?

| Classical

| ?

V569 Vul

| 2019/08/18

| Vulpecula

| {{RA|19|52|08.25}}

| {{DEC|27|42|20.9}}

| 13.3

| ?

| Classical

| ?

V3890 Sgr

| 2019/08/27

| Sagittarius

| {{RA|18|30|43.29}}

| {{DEC

24|01|08.9}}

| 7.1

| ?

| Recurrent

| Yes

| Red Giant

Gaia19edn

| 2019/09/14

| Ophiuchus

| {{RA|17|38|31.82}}

| {{DEC

29|03|47.1}}

| 12.3

| ?

| Classical

| ?

V1707 Sco

| 2019/09/15

| Scorpius

| {{RA|17|37|09.54}}

| {{DEC

35|10|23.2}}

| 11.7

| ?

| Classical

| ?

V2891 Cyg

| 2019/09/17

| Cygnus

| {{RA|21|09|25.53}}

| {{DEC|48|10|52.2}}

| 14.3

| ?

| Classical

| Yes

| ?

V659 Sct

| 2019/10/29

| Scutum

| {{RA|18|39|59.70}}

| {{DEC

10|25|41.9}}

| 8.36

| ?

| Classical

| ?

=In the Andromeda Galaxy=

Novae are also frequently spotted in the Andromeda Galaxy, and are even slightly more commonly found than in the Milky Way, as there is less intervening dust to prevent their detection. Furthermore, Andromeda is circumpolar for observers north of latitude +48-50, roughly the latitude of the Canadian-American border, allowing observers north of that to search for transients all year.

In 2019, 11 novae have been seen in the Andromeda galaxy.

class="wikitable sortable"

!Nova name

!Discovery date

!Right ascension

!Declination

!Peak
brightness (v){{cite web |last1=Mukai |first1=Koji |title=Recent Novae |url=https://asd.gsfc.nasa.gov/Koji.Mukai/novae/novae.html |website=asd.gsfc.nasa.gov |accessdate=25 January 2019}}

!Absolute
magnitude (v)

PNV J00420290+4107142

|2019/01/20

|{{RA|00|42|02.90}}

|{{DEC|41|07|14.2}}

|18.2

| -6.3

PNV J00424503+4114248

|2019/01/21

|{{RA|00|42|45.03}}

|{{DEC|41|14|24.8}}

|18.0

| -6.5

PNV J00430008+4118340

|2019/01/23

|{{RA|00|43|00.08}}

|{{DEC|41|18|34.0}}

|19.5

| -5.0

PNV J00422916+4114013

|2019/01/27

|{{RA|00|42|29.16}}

|{{DEC|41|14|01.3}}

|19.6

| -4.9

PNV J00435457+4117330

|2019/01/28

|{{RA|00|43|54.57}}

|{{DEC|41|17|33.0}}

|17.5

| -7.0

PNV J00425100+4121038

|2019/02/03

|{{RA|00|42|51.00}}

|{{DEC|41|21|03.8}}

|18.8

| -5.7

PNV J00421999+4113225

|2019/03/13

|{{RA|00|42|19.99}}

|{{DEC|41|13|22.5}}

|18.8

| -5.7

PNV J00423396+4113577

|2019/04/16

|{{RA|00|42|33.96}}

|{{DEC|41|13|57.7}}

|17.3

| -7.2

PNV J00424174+4116263

|2019/04/26

|{{RA|00|42|41.74}}

|{{DEC|41|16|26.3}}

|16.6

| -7.9

PNV J00422198+4123584

|2019/05/24

|{{RA|00|42|21.98}}

|{{DEC|41|23|58.4}}

|16.7

| -7.8

PNV J00432058+4125426

|2019/05/28

|{{RA|00|43|20.58}}

|{{DEC|41|25|42.6}}

|17.4

| -7.1

=In other galaxies=

Any galaxy within 20 million light-years of the Sun could theoretically have nova events bright enough to be detected from Earth, although in practice most are only detected in galaxies within 10-15 million light-years of the Milky Way, such as the Triangulum Galaxy, Messier 81, Messier 82, Messier 83, and Messier 94.

In 2019, two novae were observed in Messier 81, and another in the Triangulum Galaxy. A luminous red nova was observed in the Whirlpool Galaxy (Messier 51a), probably caused by a merger of two stars.

class="wikitable sortable"

!Nova name

!Discovery date

!Host galaxy

!Right ascension

!Declination

!Peak
brightness (v)

!Distance
(million light-years)

!Absolute
magnitude (v)

!Type

AT 2019gc

|2019/01/06

|Triangulum Galaxy

|{{RA|01|33|56.94}}

|{{DEC|30|32|32.6}}

|17.0

|2.65

| -7.5

| Classical

AT 2019abn

|2019/01/22

|Whirlpool Galaxy

|{{RA|13|29|42.39}}

|{{DEC|47|11|16.9}}

|16.9

|23

| -12.3

| Luminous Red Nova

PNV J09555100+6902323

|2019/04/14

|Messier 81

|{{RA|09|55|51.00}}

|{{DEC|69|02|32.3}}

|19.8

|11.5

| -7.9

| Classical

PNV J09554664+6902473

|2019/06/09

|Messier 81

|{{RA|09|55|46.64}}

|{{DEC|69|02|47.3}}

|19.1

|11.5

| -8.6

| Classical

Notes

References

External links

[https://projectpluto.com/galnovae/galnovae.txt List of all galactic novae]

Category:2019 in outer space

Category:Novae

Novae in 2019

Novae

List of novae in 2019

List of novae in 2019

=In the Milky Way=

=In the Andromeda Galaxy=

=In other galaxies=

See also

Notes

References

External links