+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   3749 Balam (1982 BG1) Classification: Main-belt Asteroid          SPK-ID: 2003749 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1091381051885332 7.373e-08   a 2.237116954205697 9.8763e-09 AU q 1.992962248738545 1.6453e-07 AU i 5.381941586580063 8.0814e-06 deg node 295.7421500328464 6.1318e-05 deg peri 173.8714438000962 6.9179e-05 deg M 142.6876604377088 3.0353e-05 deg tp 2455916.087460227777 (2011-Dec-20.58746023) 0.00010277 JED period 1222.169553996793 3.35 8.0933e-06 2.216e-08 d yr n .2945581476994842 1.9506e-09 deg/d Q 2.48127165967285 1.0954e-08 AU   Orbit Determination Parameters    # obs. used (total)      1074      data-arc span      21316 days (58.36 yr)      first obs. used      1954-12-06      last obs. used      2013-04-16      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .50417      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 12:59:25   Additional Information  Earth MOID = 1.00918 AU   T_jup = 3.624  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.4 mag n/a PDS3 (MPC 28110)   rotation period rot_per 2.80483 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Incomplete or inconclusive result. Published Reference List: [Marchis, F.; Pollock, J.; Pravec, P.; Maek, M.; et al. (2008) CBET 1279.] [Polishook, D.; Brosch, N.; Prialnik, D. (2011) Icarus 212, 167-174.] [Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm] 3749 Balam (1982 BG1)          Discovered 1982-Jan-24 by Bowell, E. at Flagstaff (AM) (688) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1982 BG1 = 1954 XM = 1962 ED = 1974 YO  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 07:48 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin