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Ross 614

Ross 614Location of Ross 614 in the constellation Monoceros
Observation data Epoch J2000      Equinox J2000
Constellation	Monoceros
CCDM J06294-0249 A
Right ascension	06 29 23.401
Declination	−02° 48′ 50.32″
Apparent magnitude (V)	11.15
CCDM J06294-0249 B
Right ascension	06 29 23.52
Declination	−02° 48′ 51.1″
Apparent magnitude (V)	14.23
Characteristics
Spectral type	M4.5V/M8V
Apparent magnitude (B)	~12.77/~15.96
Apparent magnitude (V)	~11.08/~14.23
Apparent magnitude (R)	~9.78
Apparent magnitude (I)	~8.06
Apparent magnitude (J)	~6.376/~8.17
Apparent magnitude (H)	~5.754/~7.38
Apparent magnitude (K)	~5.486/~6.99
U−B color index	1.19/—
B−V color index	1.72/—
Variable type	UV CetiFlare star/
Astrometry
Radial velocity (Rv)	+18.2 km/s
Proper motion (μ)	RA: 694.73 mas/yr Dec.: −618.62 mas/yr
Parallax (π)	244.07 ± 0.73 mas
Distance	13.36 ± 0.04 ly (4.10 ± 0.01 pc)
Absolute magnitude (MV)	13.09/16.17
Orbit
Period (P)	16.586±0.004 yr
Semi-major axis (a)	1.1012 ±.0082" (4.187+0.008 −0.009 AU)
Eccentricity (e)	0.382±0.0001
Inclination (i)	52.918±0.016°
Longitude of the node (Ω)	210.385+0.030 −0.031°
Periastron epoch (T)	2445226.863+3.020 −3.043
Argument of periastron (ω) (secondary)	220.898±0.023°
Semi-amplitude (K1) (primary)	2.201383+0.015629 −0.025186 km/s
Details
Ross 614 A
Mass	0.2228 ±0.0055 M☉
Radius	0.25 R☉
Luminosity	0.007 L☉
Temperature	3,370 K
Ross 614 B
Mass	94.837+0.880 −1.370 MJup
Radius	0.107 R☉
Luminosity	0.001 L☉
Temperature	3,145 K
Other designations
Ross 614, CCDM J06294-0249, GJ 234, GCTP 1509.00, G 106-049, HIP 30920, LFT 473, LPM 239, LTT 2564, NLTT 16580, V577 Monocerotis
Ross 614 A: LHS 1849
Ross 614 B: LHS 1850
Database references
SIMBAD	The system
	A
	B

Ross 614 (V577 Monocerotis) is a red dwarf UV Ceti flare star and it is the primary member of a nearby binary star system in the constellation of Monoceros. This star has a magnitude of about 11, making it invisible to the unaided eye even though it is one of the stars nearest to the Sun. This system is among the closest to the Sun at an estimated distance of about 13.3 light years. Because this star is so close to the Earth it is often the subject of study, hence the large number of designations by which it is known.

Binary star system

This binary star system consists of two closely spaced low-mass red dwarfs. The secondary star is a dim magnitude 14 lost in the glare of the nearby primary star.

A study by George Gatewood in 2003 using older sources along with data from the Hipparcos satellite yielded an orbital period of about 16.6 years and a semi-major axis separation of about 1.1 arc seconds (2.4–5.3 AU). The most recent determination of the system orbital elements comes from a 2022 study combining data from radial velocity, astrometry, and imaging, which finds a similar orbital period, a semi-major axis of 4.2 AU, and a very low mass for the companion of 94.8 M_J.

History

The primary star was discovered in 1927 by F. E. Ross using the 40 in (100 cm) refractor telescope at the Yerkes Observatory. He noticed the high proper motion of this dim 11th magnitude star in his second-epoch plates that were part of an astronomical survey started by E. E. Barnard, his predecessor at the observatory. Ross then included this new star in his eponymous catalog along with many others he discovered.

The first detection of a binary system was in 1936 by Dirk Reuyl using the 26-in refractor telescope of the McCormick Observatory at the University of Virginia using astrometric analysis of photographic plates. In 1951 Sarah L. Lippincott made the first reasonably accurate predictions of the position of the secondary star using the 24 in (61 cm) refractor telescope of the Sproul Observatory. These calculations were used by Walter Baade to find and optically resolve this binary system for the first time using the then new 5 m (200 in) Hale Telescope at the Palomar Observatory in California.

See also

• List of nearest stars and brown dwarfs

References

1. ^ "V* V577 Mon". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-06-02.
2. ^ "LHS 1850". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-06-02.
3. ^ George Gatewood; et al. (2003). "An Astrometric Study of the Low-Mass Binary Star Ross 614" (PDF). The Astronomical Journal. 125 (3): 1530–1536. Bibcode:2003AJ....125.1530G. doi:10.1086/346143. S2CID 119597659. Archived from the original (PDF) on 2021-12-19. Retrieved 2009-06-03.
4. ^ "GCVS Query=V577 Mon". General Catalog of Variable Stars. Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-02.
5. ^ Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.
6. ^ Eggl, S.; Pilat-Lohinger, E.; Funk, B.; Georgakarakos, N.; Haghighipour, N. (2013-02-01). "Circumstellar habitable zones of binary-star systems in the solar neighbourhood". Monthly Notices of the Royal Astronomical Society. 428 (4): 3104–3113. arXiv:1210.5411. Bibcode:2013MNRAS.428.3104E. doi:10.1093/mnras/sts257. ISSN 0035-8711.
7. Pettersen, B. R.; Sundland, S. R. (February 1991). "The flare activity of V 577 Monocerotis". Astronomy and Astrophysics Supplement Series. 87: 303–308. Bibcode:1991A&AS...87..303P. Retrieved 29 January 2022.
8. Reuyl, Dirk (July 1936). "Variable proper motion of Ross 614". The Astronomical Journal. 45 (1050): 133–135. Bibcode:1936AJ.....45..133R. doi:10.1086/105356.
9. Lippincott, S. L. (February 1951). "Parallax and orbit analysis of Ross 614". Astronomical Journal. 55: 236–242. Bibcode:1951AJ.....55..236L. doi:10.1086/106471.

v t e Constellation of Monoceros
List of stars in Monoceros Monoceros in Chinese astronomy Monocerotids Monoceros Ring
Stars	Bayer α β γ δ ε ζ Flamsteed 1 2 3 6 7 9 10 12 13 14 16 17 18 19 20 21 23 24 25 27 28 77 Ori 78 Ori Variable R S (15) T U V RU RW SV TU UX VV VY AO AR AU AX BE BN BT BX CL CS CV CW DD FU GI IM PZ V372 V396 V474 V505 V569 V577 V578 V582 V588 V589 V590 V592 V614 V616 V638 V640 V641 V644 V653 V682 V684 V689 V694 V695 V696 V700 V715 V721 V723 V728 V731 V739 V743 V750 V753 V827 V838 V926 HR 2150 2154 2179 2205 2224 2234 2237 2267 2270 2280 2292 2300 2313 2317 2321 2324 2325 2328 2333 2342 2347 2355 2367 2370 2375 2378 2381 2386 2395 2406 2409 2418 2426 2430 2440 2458 2461 2467 2469 2474 2479 2502 2508 2514 2521 2530 2543 2551 2555 2570 2572 2577 2582 2584 2589 2599 2606 2610 2613 2624 2627 2636 2639 2647 2655 2656 2663 2676 2694 2731 2732 2739 2752 2765 2806 2807 2811 2833 2865 2866 2867 2876 2883 2920 2958 3014 3047 3054 3072 3150 3172 3174 3189 HD 42132 44179 44219 45090 45166 45215 45652 (Lusitânia) 46149 46150 46202 46223 46375 46966 48099 50064 50138 50281 52265 (Citalá) 65938 66428 Other A0620-00 AFGL 961 CoRoT-1 CoRoT-4 CoRoT-5 CoRoT-7 CoRoT-12 CoRoT-13 CoRoT-14 CoRoT-15 CoRoT-18 CoRoT-19 CoRoT-20 CoRoT-21 CoRoT-24 Gliese 282 Monoceros R2 IRS 3 NGC 2264 IRS 1 Ross 614 Scholz's SCR 0640−0552 UGPS J0652+0324 UGPS J0722−0540
Exoplanets CoRoT-1b CoRoT-4b CoRoT-5b CoRoT-7b CoRoT-7c CoRoT-7d CoRoT-12b CoRoT-13b CoRoT-14b CoRoT-15b CoRoT-18b CoRoT-19b CoRoT-20b CoRoT-20c CoRoT-21b CoRoT-24b CoRoT-24c HD 44219 b HD 45652 b (Viriato) HD 46375 b HD 52265 b (Cayahuanca)
Star clusters	NGC 2232 2244 2264 2301 2349 2353 2506 Other Messier 50 Christmas Tree Cluster Snowflake Cluster
Nebulae	NGC 2170 2261 2264 2346 Other Cone Nebula Fox Fur Nebula IC 447 IC 2177 Red Rectangle Nebula Rosette Nebula
Galaxies	NGC 2494 Other PKS 0805-07
Category

• M-type main-sequence stars
• Binary stars
• Local Bubble
• Monoceros
• Ross objects
• Hipparcos objects
• Gliese and GJ objects
• Objects with variable star designations