+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   49476 (1999 BA6) Classification: Main-belt Asteroid          SPK-ID: 2049476 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1143869262371286 3.5828e-08   a 2.425861224296132 7.6099e-09 au q 2.148374415371059 8.7714e-08 au i 5.512635644172626 3.4862e-06 deg node 291.4813424833176 5.1939e-05 deg peri 127.2925218451971 5.6787e-05 deg M 296.2872020523674 2.1783e-05 deg tp 2459244.742666462949 (2021-Jan-30.24266646) 8.3481e-05 TDB period 1380.058053625769 3.78 6.4939e-06 1.778e-08 d yr n .2608585914586614 1.2275e-09 deg/d Q 2.703348033221204 8.4804e-09 au   Orbit Determination Parameters    # obs. used (total)      1407      data-arc span      24812 days (67.93 yr)      first obs. used      1952-12-11      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50027      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 21:28:04   Additional Information  Earth MOID = 1.16628 au   Jupiter MOID = 2.58006 au   T_jup = 3.495  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.8   n/a MPO385133   diameter diameter 2.223 km 0.479 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.567   0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   49476 (1999 BA6)          Discovered 1999-Jan-21 by Korlevic, K. at Visnjan Reference: 20021120/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 BA6 = 2001 OR109 = 2001 RV64  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 20:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin