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AI DRA

Coordinates | Light elements | Current Minima | O-C diagram
Comments | Catalogue numbers | References | Get DSS field

  • General characteristics
    • RA
    (2000)
    DEC
    (2000)
    V
    Depth
    Sp
    B-V
    Type
    Pri
    Sec
    Pri
    Sec
    16 56 18.1524
    +52 41 54.348
    7.11
    1.1
    0.1
    A1
    (F7)
    0.05
    EA/SD

  • Statistics of collected times of minima
    • Total
    number
    Type
    Method
    Years
    Pri
    Sec
    Vi
    P
    Pg
    Pe
    Ccd
    Other
    98
    92
    6
    0
    8
    20
    70
    0
    0
    1901-1998

  • Light elements:
        The following elements were used to prepare the (O-C) diagram. Please check for any updated elements and current minima and phase.
     Min I = JD Hel 2437544.5092 + 1.198814892 E

  • Comments: Only pe minima after JD 2435053.

  • Catalogue numbers: FL2041 BD+522009 HD153345 SA 30164 BV50 AG+52 1107.

  • References:
        The references are links which will try to find the article in ADS. Please note that sometimes the article may not be listed in ADS, or other articles by the same authors may be found. This can happen if the paper is old or in an obscure journal.
    Baldwin, M. \& Samolyk, G. 1997, AAVSO Obs. minima timings No 4
    Winiarski, M. 1971, AcA, 21, 517

  • Get the 15' field centered on these coordinates from the Digitized Sky Survey at the STScI Archive.
    •  

  • Newer ephemeris data is available online at http://www.as.up.krakow.pl/ephem. Please use the more recent version in your research.

    • [ Email webmaster ] Copyright © 2000 Jerzy M. Kreiner, Chun-Hwey Kim, Il-Seong Nha