+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100035 (1991 PO8) Classification: Main-belt Asteroid          SPK-ID: 2100035 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .279047585317922 3.5518e-08   a 2.767341537734071 1.1774e-08 au q 1.995121563879394 9.4974e-08 au i 7.287937814317756 4.2617e-06 deg node 331.3917344049615 2.4981e-05 deg peri 26.15337988978468 2.6202e-05 deg M 72.64520389041245 6.3263e-06 deg tp 2458661.189721252003 (2019-Jun-26.68972125) 2.9072e-05 TDB period 1681.483343808194 4.60 1.0731e-05 2.938e-08 d yr n .2140966791765408 1.3664e-09 deg/d Q 3.539561511588749 1.506e-08 au   Orbit Determination Parameters    # obs. used (total)      997      data-arc span      13703 days (37.52 yr)      first obs. used      1982-07-27      last obs. used      2020-02-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49275      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 00:59:51   Additional Information  Earth MOID = .993711 au   Jupiter MOID = 1.93156 au   T_jup = 3.270  [ 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 15.1   n/a MPO453454   diameter diameter 6.535 km 0.316 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.038   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   100035 (1991 PO8)          Discovered 1991-Aug-05 by Holt, H. E. at Palomar Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1991 PO8 = 1982 RL1 = 1991 RC12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 20:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin