User:Spacepotato/Temp

Sirius A / B
	; The position of Sirius.
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation; (pronunciation)	Canis Major
Right ascension	06h 45m 08.9173s
Declination	−16° 42′ 58.017″
Apparent magnitude (V)	−1.47 (A) / 8.30 (B)
Characteristics
Spectral type	A1V (A) / DA2 (B)
U−B color index	−0.05 (A) / −1.04 (B)
B−V color index	0.01 (A) / −0.03 (B)
Astrometry
Radial velocity (Rv)	−7.6 km/s
Proper motion (μ)	RA: −546.05 mas/yr ; Dec.: −1223.14 mas/yr
Parallax (π)	379.21 ± 1.58 mas
Distance	8.60 ± 0.04 ly ; (2.64 ± 0.01 pc)
Absolute magnitude (MV)	1.42 (A) / 11.18 (B)
Details
Mass	2.02 (A) /; 0.978 (B) M☉
Radius	1.711 (A) /; 0.0084 ± 3% (B) R☉
Luminosity (bolometric, Lbol)	25.4 (A) /; 0.026 (B) L☉
Temperature	9,940 (A) /; 25,200 (B) K
Metallicity	[Fe/H] =0.50 (A)
Rotation	16 km/s (A)
Age	2-3 × 108 years

HD 45652
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation; (pronunciation)	Monoceros
Right ascension	06h 29m 13.1917s
Declination	+10° 56′ 02.009″
Apparent magnitude (V)	8.13
Characteristics
Spectral type	G8-K0
B−V color index	0.85
V−R color index	0.5
R−I color index	0.4
Astrometry
Proper motion (μ)	RA: 206.14 mas/yr ; Dec.: −62.69 mas/yr
Parallax (π)	27.67 ± 1.29 mas
Distance	103 ly ; (55 pc)
Absolute magnitude (MV)	5.3
Details
Mass	0.83 ± 0.05 M☉
Surface gravity (log g)	4.32 ± 0.21
Luminosity (bolometric, Lbol)	34 L☉
Temperature	5312 ± 68 K
Metallicity	[Fe/H] = 0.29 ± 0.07
Other designations
	BD+11 1197, GC 8415, HIP 30905, NLTT 16570, SAO 95735.

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j NLTT 16570, entry, SIMBAD. Accessed on line June 13, 2008.
^ ^a ^b ^c ^d ^e Cite error: The named reference arxiv was invoked but never defined (see the help page).
^ From parallax and apparent magnitude.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Database entry for Sirius A, SIMBAD. Accessed online October 20, 2007.
^ ^a ^b ^c ^d Astrometric data, mirrored by SIMBAD from the Hipparcos catalogue, pertains to the center of mass of the Sirius system. See §2.3.4, Volume 1, The Hipparcos and Tycho Catalogues, European Space Agency, 1997, and the entry for Sirius in the Hipparcos catalogue (CDS ID I/239.)
^ ^a ^b ^c ^d ^e Entry for WD 0642-166, A Catalogue of Spectroscopically Identified White Dwarfs (August 2006 version), G. P. McCook and E. M. Sion (CDS ID III/235A.)
^ Entry for HR 2491, Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., 1991. (CDS ID V/50.)
^ Computed from apparent magnitude and parallax.
^ ^a ^b ^c ^d ^e ^f Liebert, James; Young, Patrick A.; Arnett, David; Holberg, J. B.; Williams, Kurtis A. (2005). "The Age and Progenitor Mass of Sirius B". The Astrophysical Journal. 630 (1): L69–L72. arXiv:astro-ph/0507523. Bibcode:2005ApJ...630L..69L. doi:10.1086/462419.{{cite journal}}: CS1 maint: date and year (link)
^ Holberg, J. B.; Barstow, M. A.; Bruhweiler, F. C.; Cruise, A. M.; Penny, A. J. (1998). "Sirius B: A New, More Accurate View". The Astrophysical Journal. 497 (2): 935–942. doi:10.1086/305489.{{cite journal}}: CS1 maint: date and year (link)
^ From L=4πR²σT_eff⁴.
^ Adelman, Saul J. (July 8–13, 2004). "The Physical Properties of normal A stars". Proceedings of the International Astronomical Union. Poprad, Slovakia: Cambridge University Press. pp. 1–11. Bibcode:2004IAUS..224....1A. Retrieved 2007-07-03.{{cite conference}}: CS1 maint: date format (link)
^ Qiu, H. M.; Zhao, G.; Chen, Y. Q.; Li, Z. W. (2001). "The Abundance Patterns of Sirius and Vega". The Astrophysical Journal. 548 (2): 953–965. doi:10.1086/319000. Retrieved 2007-10-20.{{cite journal}}: CS1 maint: date and year (link)
^ Kervella, P.; Thévenin, F.; Morel, P.; Bordé, P.; Di Folco, E. (2003). "The interferometric diameter and internal structure of Sirius A". Astronomy and Astrophysics. 407 (2): 681–688. arXiv:astro-ph/0306604. doi:10.1051/0004-6361:20030994.{{cite journal}}: CS1 maint: date and year (link)

[simbad-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j NLTT 16570, entry, SIMBAD. Accessed on line June 13, 2008.

[arxiv-2] Cite error: The named reference arxiv was invoked but never defined (see the help page).

[3] From parallax and apparent magnitude.

[simbada-4] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Database entry for Sirius A, SIMBAD. Accessed online October 20, 2007.

[cg-5] Astrometric data, mirrored by SIMBAD from the Hipparcos catalogue, pertains to the center of mass of the Sirius system. See §2.3.4, Volume 1, The Hipparcos and Tycho Catalogues, European Space Agency, 1997, and the entry for Sirius in the Hipparcos catalogue (CDS ID I/239.)

[wd42166-6] Entry for WD 0642-166, A Catalogue of Spectroscopically Identified White Dwarfs (August 2006 version), G. P. McCook and E. M. Sion (CDS ID III/235A.)

[hr2491-7] Entry for HR 2491, Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., 1991. (CDS ID V/50.)

[co-8] Computed from apparent magnitude and parallax.

[apj_630-9] ^ ^a ^b ^c ^d ^e ^f Liebert, James; Young, Patrick A.; Arnett, David; Holberg, J. B.; Williams, Kurtis A. (2005). "The Age and Progenitor Mass of Sirius B". The Astrophysical Journal. 630 (1): L69–L72. arXiv:astro-ph/0507523. Bibcode:2005ApJ...630L..69L. doi:10.1086/462419.{{cite journal}}: CS1 maint: date and year (link)

[apj_497-10] Holberg, J. B.; Barstow, M. A.; Bruhweiler, F. C.; Cruise, A. M.; Penny, A. J. (1998). "Sirius B: A New, More Accurate View". The Astrophysical Journal. 497 (2): 935–942. doi:10.1086/305489.{{cite journal}}: CS1 maint: date and year (link)

[11] From L=4πR²σT_eff⁴.

[iau224-12] Adelman, Saul J. (July 8–13, 2004). "The Physical Properties of normal A stars". Proceedings of the International Astronomical Union. Poprad, Slovakia: Cambridge University Press. pp. 1–11. Bibcode:2004IAUS..224....1A. Retrieved 2007-07-03.{{cite conference}}: CS1 maint: date format (link)

[apj548-13] Qiu, H. M.; Zhao, G.; Chen, Y. Q.; Li, Z. W. (2001). "The Abundance Patterns of Sirius and Vega". The Astrophysical Journal. 548 (2): 953–965. doi:10.1086/319000. Retrieved 2007-10-20.{{cite journal}}: CS1 maint: date and year (link)

[aaa407-14] Kervella, P.; Thévenin, F.; Morel, P.; Bordé, P.; Di Folco, E. (2003). "The interferometric diameter and internal structure of Sirius A". Astronomy and Astrophysics. 407 (2): 681–688. arXiv:astro-ph/0306604. doi:10.1051/0004-6361:20030994.{{cite journal}}: CS1 maint: date and year (link)

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Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation (pronunciation)	Monoceros
Right ascension	06^h 29^m 13.1917^s^[1]
Declination	+10° 56′ 02.009″^[1]
Apparent magnitude (V)	8.13^[1]
Characteristics
Spectral type	G8-K0^[2]
B−V color index	0.85^[1]
V−R color index	0.5^[1]
R−I color index	0.4^[1]
Astrometry
Proper motion (μ)	RA: 206.14^[1] mas/yr Dec.: −62.69^[1] mas/yr
Parallax (π)	27.67 ± 1.29^[1] mas
Distance	103 ly (55 pc)
Absolute magnitude (M_V)	5.3^[3]
Details
Mass	0.83 ± 0.05^[2] M_☉
Surface gravity (log g)	4.32 ± 0.21^[2]
Luminosity (bolometric, L_bol)	34 L_☉
Temperature	5312 ± 68^[2] K
Metallicity	[Fe/H] = 0.29 ± 0.07^[2]
Other designations
BD+11 1197, GC 8415, HIP 30905, NLTT 16570, SAO 95735.^[1]

Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
The position of Sirius.
Constellation (pronunciation)	Canis Major
Right ascension	06^h 45^m 08.9173^s^[4]^[5]
Declination	−16° 42′ 58.017″^[4]^[5]
Apparent magnitude (V)	−1.47 (A)^[4] / 8.30 (B)^[6]
Characteristics
Spectral type	A1V (A)^[4] / DA2 (B)^[6]
U−B color index	−0.05 (A)^[7] / −1.04 (B)^[6]
B−V color index	0.01 (A)^[4] / −0.03 (B)^[6]
Astrometry
Radial velocity (R_v)	−7.6^[4] km/s
Proper motion (μ)	RA: −546.05^[4]^[5] mas/yr Dec.: −1223.14^[4]^[5] mas/yr
Parallax (π)	379.21 ± 1.58^[4] mas
Distance	8.60 ± 0.04 ly (2.64 ± 0.01 pc)
Absolute magnitude (M_V)	1.42 (A)^[8] / 11.18 (B)^[6]
Details
Mass	2.02^[9] (A) / 0.978^[9] (B) M_☉
Radius	1.711^[9] (A) / 0.0084 ± 3%^[10] (B) R_☉
Luminosity (bolometric, L_bol)	25.4^[9] (A) / 0.026^[11] (B) L_☉
Temperature	9,940^[12] (A) / 25,200^[9] (B) K
Metallicity	[Fe/H] =0.50^[13] (A)
Rotation	16 km/s^[14] (A)
Age	2-3 × 10⁸^[9] years