3749 Balam: Difference between revisions
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A [[Natural satellite|satellite]] with a diameter of ~1.5 km, designated '''S/2002 (3749) 1''', was discovered by [[William J. Merline]], [[Laird M. Close]], [[Nicholas Siegler|Nick Siegler]], [[Christophe Dumas]], [[Clark R. Chapman]], [[François J. Rigaut]], [[François Ménard]], [[William M. Owen Jr.]], and [[David C. Slater]] from the [[Gemini North Telescope]], [[Mauna Kea]]; this was announced on February 13, 2002.<ref name="IAUC7827"/> It orbits 289±13 km away in 61±10 days, with an [[orbital eccentricity]] of ~0.9.<ref name=Marchis2008/> |
A [[Natural satellite|satellite]] with a diameter of ~1.5 km, designated '''S/2002 (3749) 1''', was discovered by [[William J. Merline]], [[Laird M. Close]], [[Nicholas Siegler|Nick Siegler]], [[Christophe Dumas]], [[Clark R. Chapman]], [[François J. Rigaut]], [[François Ménard]], [[William M. Owen Jr.]], and [[David C. Slater]] from the [[Gemini North Telescope]], [[Mauna Kea]]; this was announced on February 13, 2002.<ref name="IAUC7827"/> It orbits 289±13 km away in 61±10 days, with an [[orbital eccentricity]] of ~0.9.<ref name=Marchis2008/> |
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Being such as 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.<ref name=Merline2002/> Balam has a [[ |
Being such as 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.<ref name=Merline2002/> Balam has a [[Hill sphere]] with a radius of about 1,500 km.<ref name=Marchis2008/> |
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In March 2008, [[Franck Marchis]] discovered a larger (~3 km) inner companion, making this a triple system.<ref name="IAUC8928"/><ref name="Marchishomepage"/><ref name=johnston3749/> |
In March 2008, [[Franck Marchis]] discovered a larger (~3 km) inner companion, making this a triple system.<ref name="IAUC8928"/><ref name="Marchishomepage"/><ref name=johnston3749/> |
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Revision as of 18:08, 8 January 2015
| Discovery | |
|---|---|
| Discovered by | Edward L. G. Bowell |
| Discovery date | January 24, 1982 |
| Designations | |
Named after | David D. Balam |
| 1954 XM; 1962 ED; 1974 YO; 1982 BG1 | |
| Main belt | |
| Orbital characteristics | |
| Epoch November 26, 2005 (JD 2453700.5) | |
| Aphelion | 371.292 Gm (2.482 AU) |
| Perihelion | 297.982 Gm (1.992 AU) |
| 334.637 Gm (2.237 AU) | |
| Eccentricity | 0.110 |
| 1221.998 d (3.35 a) | |
Average orbital speed | 19.85 km/s |
| 67.047° | |
| Inclination | 5.382° |
| 295.903° | |
| 173.884° | |
| Known satellites | 2 (5.2±1 km) (1.5 km) |
| Physical characteristics | |
| Dimensions | 7.2 km[1] |
| Mass | 5.09±0.2×1014 kg[1][2] |
Mean density | 2.61±0.45 g/cm³[1][2] |
| 2.80483 hr[3] | |
| Albedo | 0.16 |
| Temperature | ~183 K |
Spectral type | S[1] |
| 13.4[3] | |
3749 Balam is an asteroid orbiting in the asteroid belt. It is named after the Canadian astronomer David D. Balam.
Satellite system
A satellite with a diameter of ~1.5 km, designated S/2002 (3749) 1, was discovered by William J. Merline, Laird M. Close, Nick Siegler, Christophe Dumas, Clark R. Chapman, François J. Rigaut, François Ménard, William M. Owen Jr., and David C. Slater from the Gemini North Telescope, Mauna Kea; this was announced on February 13, 2002.[4] It orbits 289±13 km away in 61±10 days, with an orbital eccentricity of ~0.9.[2]
Being such as 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.[5] Balam has a Hill sphere with a radius of about 1,500 km.[2]
In March 2008, Franck Marchis discovered a larger (~3 km) inner companion, making this a triple system.[6][7][8]
References
- ^ a b c d Jim Baer (12 December 2010). "Recent Asteroid Mass Determinations". Personal Website. Retrieved 2012-02-03.
- ^ a b c d Marchis, Franck; P. Descamps, J. Berthier, D. hestroffer, F. vachier, M. Baek, A. Harris, D. Nesvorny (2008). "Main Belt Binary Asteroidal Systems With Eccentric Mutual Orbits". Icarus. 195 (1): 295–316. arXiv:0804.1385. Bibcode:2008Icar..195..295M. doi:10.1016/j.icarus.2007.12.010.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ a b "JPL Small-Body Database Browser: 3749 Balam (1982 BG1)" (2011-12-29 last obs). Jet Propulsion Laboratory. Retrieved 2012-02-04.
- ^ "IAUC 7827: P/2001 WF_2; S/2002 (3749) 1". IAU Central Bureau for Astronomical Telegrams. 2002-02-13. Retrieved 2005-11-17.
- ^ Merline, W.J.; Siegler, N.; Dumas, C.; Chapman, C. R.; Rigaut, F.; Menard, F.; Owen, W. M.; Slater, D. C.; Durda, D. D. (2002). "Discovery of a Loosely-bound Companion to Main-belt Asteroid (3749) Balam". American Astronomical Society. 34: 835. Bibcode:2002DPS....34.0201M.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ "IAUC 8928: V2468 Cyg = N Cyg 2008; (3749)". IAU Central Bureau for Astronomical Telegrams. 2008-03-19. Retrieved 2012-02-04.
- ^ Franck Marchis (Principal Investigator, SETI Institute, UC Berkeley). "Franck Marchis Web Page". Department of Astronomy (University of California at Berkeley). Retrieved 2009-10-27.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ^ Wm. Robert Johnston (2009-01-13). "(3749) Balam, S/2002 (3749) 1, and third component". Johnston's Archive. Retrieved 2009-10-27.
External links
- Orbital simulation from JPL (Java) / Ephemeris
- IAUC 7827
- Franck Marchis entry for 3749 Balam
- Orbits of Binary Asteroids with Adaptive Optics (VLT images)