ASASSN-21fh: possible nova (mag. 10.4) in Scorpius

Affiliation
Association Francaise des Observateurs d'Etoiles Variables (AFOEV)
Mon, 04/12/2021 - 18:22

ASASSN-21fh  (N:)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=2217653
 

Complete ASAS-SN Sky Patrol light curve and data: https://asas-sn.osu.edu/sky-patrol/coordinate/f9c61af9-11cb-4857-9663-35c8b21633b9

 
Transient Name Server:
https://www.wis-tns.org/object/2021jiu

Spectroscopy, multiband photometry (V, B, ...), and precise astrometry are urgently required.
 
Clear skies,
Patrick
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References:
All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol:
- Shappee et al., 2014ApJ...788...48S
- Kochanek et al., 2017PASP..129j4502K

Affiliation
Association Francaise des Observateurs d'Etoiles Variables (AFOEV)
V1710 Scorpii = Nova Scorpii 2021 = ASASSN-21fh (CBET 4955)

ASASSN-21fh (Nova Sco 2021) has been assigned the GCVS name V1710 Sco: http://www.cbat.eps.harvard.edu/iau/cbet/004900/CBET004955.txt (behind paywall)
 
This nova was officially (and solely) discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) – although something else is claimed in CBET 4955.
 
V1710 Scorpii in the International Variable Star Index: https://www.aavso.org/vsx/index.php?view=detail.top&oid=2217653
 
Regards,
Patrick

Affiliation
American Association of Variable Star Observers (AAVSO)
V1710 Sco = N Sco 2021 = ASASSN-21fh - Alert Notice 740

AAVSO Alert Notice 740 reports on V1710 Sco = N Sco 2021 (= ASASSN-21fh = PNV J17091000-3730500). Please see the notice for details and observing instructions.

There are threads for this object under the following forums:

- Time Sensitive Alerts: https://www.aavso.org/asassn-21fh-possible-nova-mag-104-scorpius-0
- Novae: https://www.aavso.org/asassn-21fh-possible-nova-mag-104-scorpius

Please subscribe to these threads if you are observing this nova so you can be updated as to its behavior and any observing campaigns on it. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ