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Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

Variable star V515 And - 10.9.2021 at 00.30 - 10.9.2021 at 05.10 Pieksämäki Observation number 101230

Visibility II / V

Timo Kantola, Ursa (Itä-Suomi)

I started the shooting season with the variable V515 And, which was in one of the AAVSO observation campaigns https://www.aavso.org/aavso-alert-notice-753
The V515 And is a white dwarf star of about 15 orders of magnitude that collects

I started the fall 2021 shooting season with the variable V515 And, which in one of the AAVSO observation campaigns https://www.aavso.org/aavso-alert-notice-753 was comfortably visible about 5 degrees above M31.
The V515 And is a white dwarf star of about 15 orders of magnitude that collects material from its companion - more information about the star: https://arxiv.org/pdf/1202.2493.pdf
I made a stack of measurements with regsitaxi with exposure 4h 15min.

There is one wandering 17.8 V-mag object in the stack, apparently an asteroid, I couldn't find a name for the object in Cartes - could someone dig the object's information from the image?


Location of the "asteroid":

2021-09-10 00:35:00 UT

Mean of the date RA: 00h57m 28.02s DE: + 46 ° 19 '20.8 "

Brightness measured 17.8 V-mag.

Observation site 62.26 N 27.11E



More similar observations
Additional information
  • Observation target
    • Variable star
  • Constellation
    • Andromeda
  • Designation
    • V515 And
  • Brightness in magnitudes
    • 15.1
Technical information

SPX12 "F4 BaaderMPCC, Atik314L +, Jhonson V filter. 40sec exposures

Comments: 3 pcs
Tapio Lahtinen - 14.9.2021 at 08.53 Report this

Huomasinkin havaintojasi AAVSOn tietokannassa.
Itsekin tehnyt tästä havaintoja, tosin vain 1/yö kun sitä pyydettiin.
En tiennyt että muutoksia tapahtuu näin lyhyessä aikamittakaavassa.

Kari Laihia - 14.9.2021 at 20.12 Report this

Asteroidi on (69701) 1998 HP49  JPL H 17.595mag. Mittauksesi on ihan hyvä 2mag ero johtuu varmaankin vertailutähdestä'.

Kari Laihia - 15.9.2021 at 14.35 Report this

Tarkoitin tietenkin 0.2mag eroa , 0 hävisi jonnekin. Erinomainen muuttujahavainto. ja plussana Mars-Crossing asteroidikin :).

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