T Leporis

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T Leporis

T Leporis (below) compared to the Sun and Earth's orbit (above)
Observation data
ICRS
)
Constellation Lepus
Right ascension 05h 04m 50.85s[1]
Declination −21° 54′ 16.5″[1]
Apparent magnitude (V) 7.4 - 14.3[2]
Characteristics
Spectral type M6e-M9e[2]
Variable type Mira[2]
Distance
1,100 ± 70 ly
(340 ± 20 pc)
Details
Mass2.7[4] M☉
Surface gravity (log g)−0.5[4] cgs
Temperature2,800[4] K
HIP
 23636
Database references
SIMBADdata

T Leporis (T Lep / HD 32803 / HIP 23636) is a

period of 368.13 days.[2]

The annual parallax of T Leporis was measured by the

Gaia Data Release 2 is more accurate and yields a distance of 340±20 pc.[1] The distance has also been measured using very-long-baseline interferometry and found to be 327±4 pc.[6]

The visual band light curve of T Leporis, from AAVSO data[7]

Mira variables are some of the major sources of molecules and dust in the

interferometer of the European Southern Observatory (ESO) have revealed a shell of gas and dust surrounding the star, whose diameter is some 100 times larger than that of the Sun.[8] Given the great distance at which this class of stars lie, its apparent angular diameter
— despite its enormous size — is no more than a millionth of the solar apparent angular diameter.

See also

  • Mira Ceti

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. ^
    Bibcode:2009yCat....102025S
    .
  3. S2CID 119231169
    .
  4. ^
    S2CID 55190629
    .
  5. S2CID 18759600
    .
  6. S2CID 118635632
    .
  7. ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  8. ^ "Unique Details Of Double Star In Orion Nebula And Star T Leporis Captured By 'Virtual' Telescope". ScienceDaily. 19 February 2009.
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