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Details for Revision 2
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Name
  N Her 2021  
AAVSO UID
000-BNZ-786 (158448 observations)  
Constellation
Hercules Sequence
J2000.0
18 57 30.98 +16 53 39.6  (284.37908 +16.89433) Search nearby
B1950.0 18 55 16.90 +16 49 35.4
Galactic coord. 48.707 +6.311
Other names

(Internal only)
GSC2.3 N2D3059631 Gaia DR2 4514092717838547584 Nova Her 2021
Nova Herculis 2021 PSO J185730.981+165339.527 TCP J18573095+1653396
ZTF19aasfsjq    
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Variability type
N
Spectral type --
Mag. range
6.2 V - <20.5 g
Discoverer Seiji Ueda
Epoch
--
Outburst 2021
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Spin period 0.005805 d. (2021ATel14856....1P).
2 Otero, Sebastian Alberto Outburst peak epoch 2459378.35.
3 Schmeer, Patrick Neon nova (2021ATel14746....1W)
4 Schmeer, Patrick Based on pre-eruption ZTF data this could be an intermediate polar with a white dwarf spin period of 0.00580356 d (8.357 min) (2021ATel14720....1M).
5 Otero, Sebastian Alberto VSP Note: 19.5 mag. star 1.8" to the NW, 20.2 mag. star 2.9" to the SW, 20.4 mag. star 3.2" to the S and 18.1 mag. star 6" to the NNW.
6 Schmeer, Patrick Prior to the eruption that started on 2021 June 12, no brightenings had been recorded by the ASAS-SN Sky Patrol since 2015 January 27.
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References
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1 J. Patterson; et al., 2021, ATel #14856 2021ATel14856....1P
2 S. Shugarov; M. Afonina, 2021, ATel #14835 2021ATel14835....1S
3 R. M. Wagner; C. E. Woodward; S. Starrfield; et al., 2021, ATel #14746 2021ATel14746....1W
4 P. Mroz; K. Burdge; J. van Roestel; et al., 2021, ATel #14720 2021ATel14720....1M
5 E. Aydi; K. V. Sokolovsky; L. Chomiuk; et al., 2021, ATel #14710 2021ATel14710....1A
6 U. Munari; P. Valisa; S. Dallaporta, 2021, ATel #14704 2021ATel14704....1M
7 E. Kazarovets; et al., 2021, CBET #4977 --
8 CBAT "Transient Object Followup Reports", 2021 (online data) --
9 S. Ueda; et al., 2021, CBET #4976 --
10 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0		 2017PASP..129j4502K
11 ZTF observations (Lasair online data) --
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Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
8 Otero, Sebastian Alberto 2021-08-13 05:40 UTC Type and periods from 2021ATel14856....1P.
7 Otero, Sebastian Alberto 2021-08-10 03:13 UTC Period and epoch of minimum (orbital) from 2021ATel14835....1S.
6 Schmeer, Patrick 2021-07-02 10:39 UTC Remark and reference added.
5 Schmeer, Patrick 2021-06-15 20:09 UTC Type from 2021ATel14720....1M.
4 Schmeer, Patrick 2021-06-15 07:14 UTC Primary name from CBET 4977. Type from AAVSO data.
3 Otero, Sebastian Alberto 2021-06-13 04:47 UTC Maximum magnitude and outburst peak epoch from AAVSO data.
2 Schmeer, Patrick 2021-06-12 23:03 UTC Type and maximum magnitude from 2021ATel14704....1M. Primary name changed.
1 Schmeer, Patrick 2021-06-12 17:09 UTC Gaia EDR3 position. Minimum magnitude from Pan-STARRS1 and Gaia EDR3.

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