+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   425172 (2009 UQ3) Classification: Main-belt Asteroid          SPK-ID: 2425172 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0972394144671795 5.1582e-08   a 2.662635046570242 2.6502e-08 au q 2.40372197370196 1.4107e-07 au i 8.285997832629663 5.6795e-06 deg node 91.2453514873374 3.8043e-05 deg peri 295.3886391997916 4.8704e-05 deg M 159.1388986254636 3.2035e-05 deg tp 2458298.980511791374 (2018-Jun-29.48051179) 0.00013863 TDB period 1586.959680734498 4.34 2.3693e-05 6.487e-08 d yr n .2268488635031862 3.3868e-09 deg/d Q 2.921548119438524 2.9079e-08 au   Orbit Determination Parameters    # obs. used (total)      230      data-arc span      6672 days (18.27 yr)      first obs. used      2002-01-14      last obs. used      2020-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52292      source      ORB      producer      Otto Matic      solution date      2020-May-22 02:45:02   Additional Information  Earth MOID = 1.42291 au   Jupiter MOID = 2.49002 au   T_jup = 3.363  [ hide covariance matrix ] Orbital Elements at Epoch 2457698.5 (2016-Nov-06.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09662956415645552 5.1592e-08   q 2.405577605178576 1.4094e-07 au tp 2458300.284003761734 (2018-Jun-30.78400376) 0.00013939 TDB node 91.25325692636289 3.8043e-05 deg peri 295.7565059348217 4.8816e-05 deg i 8.28563557688447 5.6791e-06 deg   Orbit Determination Parameters    # obs. used (total)      230      data-arc span      6672 days (18.27 yr)      first obs. used      2002-01-14      last obs. used      2020-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52292      source      ORB      producer      Otto Matic      solution date      2020-May-22 02:45:02   Additional Information  Jupiter MOID = 2.49002 au   T_jup = 3.363  Orbit Covariance (6×6)   e q tp node peri i e 2.661756098814961E-15 -7.167025111984361E-15 9.784686944160678E-13 3.444272792656006E-15 1.372220605459882E-13 4.679890870430606E-15 q -7.167025111984361E-15 1.986527638349262E-14 -1.91186530892125E-12 -1.090919174796326E-14 -2.585590884952159E-13 -1.116316968767183E-14 tp 9.784686944160678E-13 -1.91186530892125E-12 1.942938869380954E-8 -1.321463218952839E-11 4.28343441642717E-9 6.261478419808782E-13 node 3.444272792656006E-15 -1.090919174796326E-14 -1.321463218952839E-11 1.447242862073367E-9 -1.434389487833967E-9 1.31520426532076E-11 peri 1.372220605459882E-13 -2.585590884952159E-13 4.28343441642717E-9 -1.434389487833967E-9 2.383000831739612E-9 -1.310392986184456E-11 i 4.679890870430606E-15 -1.116316968767183E-14 6.261478419808782E-13 1.31520426532076E-11 -1.310392986184456E-11 3.225202896283691E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.7   n/a MPO419100   diameter diameter 2.579 km 0.645 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.061   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   425172 (2009 UQ3)          Discovered 2009-Oct-19 by Lowe, A. at Mayhill Reference: Last Updated: 2015-02-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-18 08:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin