33 Arietis

33 Arietis
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension 02h 40m 41.07563s[1]
Declination +27° 03′ 39.4040″[1]
Apparent magnitude (V) +5.33[2]
Characteristics
Spectral type A3 V[3]
U−B color index +0.13[4]
B−V color index +0.09[4]
Astrometry
Radial velocity (Rv)+21.0[5] km/s
Proper motion (μ) RA: +64.83[1] mas/yr
Dec.: -26.05[1] mas/yr
Parallax (π)14.09 ± 0.32 mas[1]
Distance231 ± 5 ly
(71 ± 2 pc)
Details
Rotational velocity (v sin i)107[6] km/s
Other designations
BD+26° 443, HD 16628, HIP 12489, HR 782, SAO 75510.[7]
Database references
SIMBADdata

33 Arietis (abbreviated 33 Ari) is a binary star[2] in the northern constellation of Aries. 33 Arietis is the Flamsteed designation. The combined apparent magnitude of 5.33[2] is bright enough to be seen with the naked eye. Based upon an annual parallax shift of 14.09 mas,[1] the distance to this system is approximately 231 light-years (71 parsecs).

The primary component is an A-type main sequence star with a magnitude of 5.40 and a stellar classification of A3 V. It has a magnitude 8.40 companion at an angular separation of 28.6 arcseconds. An excess of infrared emission suggests the presence of circumstellar dust in this system. In the 24μm band, this debris disk has a mean temperature of 815 K, which puts it at a radius of 0.85 astronomical units (AU) from the primary star. Excess emission appears in the 70μm band, which has a temperature of 103 K and a radius out to 42 AU.[8]

This star was located in the constellation Musca Borealis.

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  2. ^ a b c Cite error: The named reference mnras389_2_869 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference aj74_375 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference atao6_148 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference rob135_385 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference aaa463_2_671 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference apj658_2_1264 was invoked but never defined (see the help page).