(cba:news) ATO J104.6895+17.0332: possible recovery of the 1892 nova? (=NSV 3313)
jop at astro.columbia.edu
Fri Aug 28 04:20:45 EDT 2020
As usual, a nice piece of detective work by Taichi. A tad too early in
the season, but... if you have a clear view to the east, put it on your
list! Exploring these OLD "old novae" (or in this case, candidates) is
one of our ongoing high-priority subject areas.
Speaking of which, V Per (1887 nova) is another, much better placed for
the borealites among us. It's quite faint (18.5?) but the two things
we're interested in (orbital waveform and eclipse timing) are not
terribly demanding. The eclipses are pretty deep (20th mag?) but fear
not - with P~2 hour, there are a lot of them, and one can use the
waveform near eclipse (rise/fall) to define mid-eclipse with passable
CI Aql and Nova Sco 1437 also continue to be high-priority targets,
still seasonally appropriate.
-------- Forwarded Message --------
Subject: [vsnet-alert 24603] ATO J104.6895+17.0332: possible recovery of
the 1892 nova? (=NSV 3313)
Date: Fri, 28 Aug 2020 11:10:35 +0900
From: Taichi Kato <tkato at kusastro.kyoto-u.ac.jp>
To: variable_star_forum at yahoogroups.com,
vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp, vsnet-alert at yahoogroups.com
ATO J104.6895+17.0332: possible recovery of the 1892 nova? (=NSV 3313)
I found a period of 0.477906(2) d with minima of
different depths in one cycle.
065845.488 +170159.74 (2000.0) Gaia_DR2_3361199697425899008
plx=0.164(0.065) dismod=13.9 pmra=-0.029(0.121) pmdec=-1.322(0.097)
G=15.604 BP=15.760 RP=15.355
The Gaia color is too blue for a W UMa star.
Also detected as a variable:
065845.4 +170159 (2000.0) PS1RRJ065845.48+170159.8 RR g=15.21(0.47)
The location is sufficiently close to the suspected
nova in 1892 and this object would be the quiescent
counterpart. Spectroscopy is desired.
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