3749 Balam

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3749 Balam
Synodic rotation period
2.805 h[11][12][13][a]
0.16[14]
0.277±0.096[8]
0.355±0.067[6][7]
Sq [13][14]
13.3[1]
13.4[6]
13.66[3][8][12][a]

3749 Balam

David Balam.[15] Balam measures approximately 4.1 kilometers (2.5 miles) in diameter.[5] Its two minor-planet moons
have an estimated diameter of 1.66 and 1.84 kilometers, respectively.

Orbit and classification

Balam is a member of the Flora family, a very large group of stony asteroids in the inner main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,222 days). Its orbit has an eccentricity of 0.11 and an inclination of 5° with respect to the ecliptic.[1]

Naming

It is named after the Canadian astronomer

M.P.C. 13178).[16]

Physical characteristics

The

rotation around its axis has been measured several times by different lightcurve observations with a concurring period of 2.8 hours.[11][12][13][a]

Trinary asteroid

Outer satellite

On 13 February 2002, the discovery of a

Gemini North Telescope on Mauna Kea in Hawaii.[17] It has an estimated diameter of 1.84 kilometers. It orbits 289±13 km away in 61±10 days, with a high orbital eccentricity of ~ 0.9. The distant and highly eccentric orbit of S/2002 (3749) 1 suggests that it was likely captured by Balam.[10]

Being such a small primary body in the inner

main belt with a separation of over 100 primary radii, S/2002 (3749) 1 is the most loosely bound binary known.[18] Balam has a Hill sphere with a radius of about 1,500 kilometers.[10]

Inner satellite

In March 2008,

trinary asteroid.[19][20] The inner satellite has a derived diameter of 1.66 kilometer, based on diameter-ratio of 0.42±0.03 with its primary.[4]

Other known trinary asteroids include 45 Eugenia, 87 Sylvia, 93 Minerva, 107 Camilla, 130 Elektra and 216 Kleopatra.

Asteroid pair

Balam also forms an

David Vokrouhlický identified the unbound secondary in 2009. Based on backward orbit integrations, it is thought that Balam and 2009 BR60 form a secured asteroid pair that became separated approximately 400,000 years ago.[5]

Notes

  1. ^ a b c Pravec-2012web, rotation period of 2.80478±0.00005 with an amplitude in brightness variation of 0.1 magnitude. Summary figures for (3749) Balam at Lightcurve Database

References

  1. ^ a b c d "JPL Small-Body Database Browser: 3749 Balam (1982 BG1)" (2016-08-03 last obs.). Jet Propulsion Laboratory. Retrieved 16 June 2017.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b "LCDB Data for (3749) Balam". Asteroid Lightcurve Database (LCDB). Retrieved 16 June 2017.
  4. ^ a b Wm. Robert Johnston (13 January 2009). "(3749) Balam, S/2002 (3749) 1, and third component". Johnston's Archive. Retrieved 27 October 2009.
  5. ^
    S2CID 119480790
    .
  6. ^
    S2CID 35447010
    .
  7. ^
    S2CID 118745497
    .
  8. ^
    S2CID 161887
    .
  9. ^ a b Jim Baer (12 December 2010). "Recent Asteroid Mass Determinations". Personal Website. Archived from the original on 29 January 2009. Retrieved 16 June 2017.
  10. ^
    S2CID 119244052
    .
  11. ^
    Bibcode:2008CBET.1297....1M
    .
  12. ^
    S2CID 119246302
    .
  13. ^
    S2CID 118618128
    .
  14. ^
    ISBN 978-1-62857-728-0
    .
  15. ^ "3749 Balam (1982 BG1)". Minor Planet Center. Retrieved 11 November 2015.
  16. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 16 June 2017.
  17. ^ "IAUC 7827: P/2001 WF_2; S/2002 (3749) 1". IAU Central Bureau for Astronomical Telegrams. 13 February 2002. Retrieved 17 November 2005.
  18. Bibcode:2002DPS....34.0201M
    .
  19. ^ "IAUC 8928: V2468 Cyg = N Cyg 2008; (3749)". IAU Central Bureau for Astronomical Telegrams. 19 March 2008. Retrieved 4 February 2012.
  20. ^ Franck Marchis – Principal Investigator, SETI Institute, UC Berkeley. "Franck Marchis Web Page". Department of Astronomy (University of California at Berkeley). Archived from the original on 10 November 2007. Retrieved 27 October 2009.{{cite web}}: CS1 maint: multiple names: authors list (link)

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=3749_Balam&oldid=1195678399"