+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   834 Burnhamia (A916 SG) Classification: Main-belt Asteroid          SPK-ID: 2000834 [ 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 111 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2011616628021179 3.1535e-08   a 3.184938998211102 1.4024e-08 au q 2.544251373407644 9.864e-08 au i 3.977918585049843 3.9743e-06 deg node 182.6769696457928 5.2881e-05 deg peri 91.32013645976268 5.3802e-05 deg M 207.705950108317 1.1033e-05 deg tp 2459878.775038601952 (2022-Oct-26.27503860) 6.6158e-05 TDB period 2076.108778521423 5.68 1.3713e-05 3.754e-08 d yr n .1734013187191411 1.1453e-09 deg/d Q 3.825626623014559 1.6846e-08 au   Orbit Determination Parameters    # obs. used (total)      3421      data-arc span      42024 days (115.06 yr)      first obs. used      1905-10-26      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43397      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:56:30   Additional Information  Earth MOID = 1.53198 au   Jupiter MOID = 1.32654 au   T_jup = 3.163  [ 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 9.5   n/a MPO502161 IRAS observations used: 32 diameter diameter 61.278 km 0.303 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 13.875 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Buchheim, R.K. (2007) Minor Planet Bull. 34, 68-71.] geometric albedo albedo 0.071   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.752   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.49, mean=2.03, max.=2.58) deg. U-B UB 0.472   0.047 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.49, mean=2.03, max.=2.58) deg. Tholen spectral type spec_T GS:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 834 Burnhamia (A916 SG)          Discovered 1916-Sep-20 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A916 SG = 1959 CA = 1972 JE = A905 UM  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-18 18:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin