+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   452181 (2015 RQ89) Classification: Main-belt Asteroid          SPK-ID: 2452181 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1792637837334403 6.4763e-08   a 2.393452322549859 1.8465e-08 au q 1.96439300302398 1.507e-07 au i .977903331428591 7.0358e-06 deg node 204.71991078285 0.00026829 deg peri 188.2527757997817 0.00026899 deg M 77.48860867048722 1.5393e-05 deg tp 2458709.380725442738 (2019-Aug-13.88072544) 5.7702e-05 TDB period 1352.494781346231 3.70 1.5651e-05 4.285e-08 d yr n .2661747793523219 3.0802e-09 deg/d Q 2.822511642075737 2.1775e-08 au   Orbit Determination Parameters    # obs. used (total)      177      data-arc span      6522 days (17.86 yr)      first obs. used      2002-02-20      last obs. used      2019-12-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51855      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 06:43:18   Additional Information  Earth MOID = .970501 au   Jupiter MOID = 2.6087 au   T_jup = 3.508  [ hide covariance matrix ] Orbital Elements at Epoch 2457183.5 (2015-Jun-10.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1791400725034372 6.5214e-08   q 1.964762554366345 1.5182e-07 au tp 2457353.969499118673 (2015-Nov-27.46949912) 5.9588e-05 TDB node 204.7349950913748 0.00026908 deg peri 187.6226291128953 0.00026978 deg i .9745953365294059 7.0398e-06 deg   Orbit Determination Parameters    # obs. used (total)      177      data-arc span      6522 days (17.86 yr)      first obs. used      2002-02-20      last obs. used      2019-12-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51855      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 06:43:18   Additional Information  Jupiter MOID = 2.6087 au   T_jup = 3.508  Orbit Covariance (6×6)   e q tp node peri i e 4.252897893067731E-15 -9.857560145358569E-15 -1.67001425122945E-12 7.400425236853255E-15 -5.621828508204353E-13 -1.168456484539875E-15 q -9.857560145358569E-15 2.305068083961083E-14 3.785441981139176E-12 -1.720961224607344E-14 1.269053228895595E-12 2.847286436130569E-15 tp -1.67001425122945E-12 3.785441981139176E-12 3.550756684806446E-9 5.222973510971725E-12 1.163186200951203E-9 -1.732025571533605E-13 node 7.400425236853255E-15 -1.720961224607344E-14 5.222973510971725E-12 7.240497416213386E-8 -7.239229347644626E-8 -2.64637204046943E-10 peri -5.621828508204353E-13 1.269053228895595E-12 1.163186200951203E-9 -7.239229347644626E-8 7.277922140701048E-8 2.645335741456477E-10 i -1.168456484539875E-15 2.847286436130569E-15 -1.732025571533605E-13 -2.64637204046943E-10 2.645335741456477E-10 4.955859046901554E-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 17.7   n/a MPO495254   452181 (2015 RQ89)          Discovered 2004-Oct-13 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-11-30 Alternate Designations  2015 RQ89 = 2004 TJ341  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 07:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin