+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   487877 (2015 TW130) Classification: Main-belt Asteroid          SPK-ID: 2487877 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06172875400599562 7.5507e-08   a 2.660033956878133 4.2843e-08 au q 2.495833375106407 2.2797e-07 au i 6.710444353607047 4.5107e-06 deg node 127.1625087281002 5.803e-05 deg peri 257.755507552156 6.9885e-05 deg M 34.97264477845745 3.7016e-05 deg tp 2458846.558691457041 (2019-Dec-29.05869146) 0.00016341 TDB period 1584.634831781507 4.34 3.8284e-05 1.048e-07 d yr n .2271816779360291 5.4886e-09 deg/d Q 2.824234538649858 4.5488e-08 au   Orbit Determination Parameters    # obs. used (total)      120      data-arc span      4336 days (11.87 yr)      first obs. used      2007-12-15      last obs. used      2019-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57035      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 18:48:46   Additional Information  Earth MOID = 1.50914 au   Jupiter MOID = 2.45655 au   T_jup = 3.374  [ hide covariance matrix ] Orbital Elements at Epoch 2457776.5 (2017-Jan-23.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06195124532876238 7.5321e-08   q 2.495131378164357 2.2713e-07 au tp 2457253.172485859508 (2015-Aug-18.67248586) 0.00017394 TDB node 127.2905222449971 5.805e-05 deg peri 255.7826617863241 6.9979e-05 deg i 6.709549845117667 4.5124e-06 deg   Orbit Determination Parameters    # obs. used (total)      120      data-arc span      4336 days (11.87 yr)      first obs. used      2007-12-15      last obs. used      2019-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57035      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 18:48:46   Additional Information  Jupiter MOID = 2.45655 au   T_jup = 3.374  Orbit Covariance (6×6)   e q tp node peri i e 5.673317703596054E-15 -1.694081747125909E-14 3.694551465705246E-12 3.145817731311878E-14 7.134206854181633E-13 -1.407547092633045E-14 q -1.694081747125909E-14 5.158715073892499E-14 -1.242119598417613E-11 -9.541638628600312E-14 -2.382243462609396E-12 4.460088398843423E-14 tp 3.694551465705246E-12 -1.242119598417613E-11 3.025418922973407E-8 6.329992365696228E-11 6.854456774252417E-9 -1.303875356766257E-11 node 3.145817731311878E-14 -9.541638628600312E-14 6.329992365696228E-11 3.369774410717116E-9 -3.332060103422529E-9 4.601152748302897E-11 peri 7.134206854181633E-13 -2.382243462609396E-12 6.854456774252417E-9 -3.332060103422529E-9 4.897104820820376E-9 -4.827030111107746E-11 i -1.407547092633045E-14 4.460088398843423E-14 -1.303875356766257E-11 4.601152748302897E-11 -4.827030111107746E-11 2.036152694410005E-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 17.1   n/a MPO440946   487877 (2015 TW130)          Discovered 2007-Dec-15 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2017-03-14 Alternate Designations  2015 TW130 = 2008 AF57  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-08 13:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin