+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   212337 (2005 SD273) Classification: Outer Main-belt Asteroid          SPK-ID: 2212337 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1571897278526648 6.5984e-08   a 3.984351900620351 6.857e-08 au q 3.35805270969259 2.7135e-07 au i .8610852260951614 6.8557e-06 deg node 39.12082042054637 0.00053533 deg peri 253.6224730831744 0.00053603 deg M 32.04034805591298 2.7587e-05 deg tp 2458741.958845233676 (2019-Sep-15.45884523) 0.00022148 TDB period 2904.925238435414 7.95 7.499e-05 2.053e-07 d yr n .123927457834989 3.1991e-09 deg/d Q 4.610651091548112 7.9348e-08 au   Orbit Determination Parameters    # obs. used (total)      202      data-arc span      6709 days (18.37 yr)      first obs. used      2002-03-16      last obs. used      2020-07-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59949      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 15:03:37   Additional Information  Earth MOID = 2.34205 au   Jupiter MOID = .595546 au   T_jup = 3.034  [ hide covariance matrix ] Orbital Elements at Epoch 2457276.5 (2015-Sep-11.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1646745024591069 6.4513e-08   q 3.317491199655838 2.6787e-07 au tp 2455863.748430951155 (2011-Oct-29.24843095) 0.00022335 TDB node 39.17945200032275 0.00052596 deg peri 256.4957114101995 0.00052656 deg i .8759154068760957 6.8982e-06 deg   Orbit Determination Parameters    # obs. used (total)      202      data-arc span      6709 days (18.37 yr)      first obs. used      2002-03-16      last obs. used      2020-07-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59949      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 15:03:37   Additional Information  Jupiter MOID = .595546 au   T_jup = 3.034  Orbit Covariance (6×6)   e q tp node peri i e 4.161940903366005E-15 -1.689964055749125E-14 5.515885836128838E-12 2.447001435474921E-14 5.917540289631575E-13 2.540916995490385E-16 q -1.689964055749125E-14 7.175249867359277E-14 -2.546388148708685E-11 -1.476713213025135E-13 -2.480939240446045E-12 -8.751109315509725E-16 tp 5.515885836128838E-12 -2.546388148708685E-11 4.988706884819022E-8 -1.807775166974906E-10 5.696884801770706E-9 -1.339054531074787E-13 node 2.447001435474921E-14 -1.476713213025135E-13 -1.807775166974906E-10 2.766370932718573E-7 -2.766246969352928E-7 -1.013105401573968E-9 peri 5.917540289631575E-13 -2.480939240446045E-12 5.696884801770706E-9 -2.766246969352928E-7 2.772649310362799E-7 1.012980429070928E-9 i 2.540916995490385E-16 -8.751109315509725E-16 -1.339054531074787E-13 -1.013105401573968E-9 1.012980429070928E-9 4.758579833159503E-11 [ 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 MPO440125   212337 (2005 SD273)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon Reference: 20090409/Numbers.arc Last Updated: 2009-04-10 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-30 10:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin