7 Aquarii

Source: Wikipedia, the free encyclopedia.
7 Aquarii
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 20h 56m 54.02626s[1]
Declination −09° 41′ 51.1610″[1]
Apparent magnitude (V) 5.499[2] (5.62 + 11.4)[3]
Characteristics
Spectral type K4 III[4]
B−V color index +1.474±0.006[5]
Variable type Suspected[6]
Distance
660 ± 20 ly
(202 ± 5 pc)
Absolute magnitude (MV)−0.61[5]
Details
dex
HR 8015, SAO 144968, ADS 14449, WDS J20569-0942[9]
Database references
SIMBADdata

7 Aquarii, abbreviated 7 Aqr, is a

light years. It is moving closer to the Earth with a heliocentric radial velocity of −32 km/s.[7]

The primary component is an aging

Sun's luminosity from its enlarged photosphere at an effective temperature of 3,990 K.[2]

References

  1. ^
    doi:10.1051/0004-6361/201833051
    .
  2. ^
    doi:10.1086/191527
    .
  3. ^
    S2CID 14878976
    .
  4. ^
    Bibcode:1988mcts.book.....H
    .
  5. ^
    S2CID 119257644
    .
  6. ^
    S2CID 125853869
    .
  7. ^
    S2CID 119231169
    .
  8. ^
    ISBN 3-540-29692-1
    . The radius (R*) is given by:
  9. ^ "7 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 22, 2018.
  10. doi:10.1086/323920
    .
  11. doi:10.1051/0004-6361:20042039
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=7_Aquarii&oldid=1170095680"