+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   452158 (2015 RM54) Classification: Main-belt Asteroid          SPK-ID: 2452158 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1815601856070918 6.1175e-08   a 2.389909160301348 1.723e-08 au q 1.955996809572947 1.4072e-07 au i 1.906212716675651 6.6597e-06 deg node 224.043036512478 0.00016181 deg peri 192.2547961046675 0.00016694 deg M 58.67527787789139 3.0846e-05 deg tp 2458780.550402316263 (2019-Oct-24.05040232) 0.00011675 TDB period 1349.492631818978 3.69 1.4594e-05 3.996e-08 d yr n .2667669252219309 2.8849e-09 deg/d Q 2.823821511029749 2.0358e-08 au   Orbit Determination Parameters    # obs. used (total)      86      data-arc span      6526 days (17.87 yr)      first obs. used      2002-03-12      last obs. used      2020-01-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47236      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 11:33:41   Additional Information  Earth MOID = .967871 au   Jupiter MOID = 2.52008 au   T_jup = 3.509  [ hide covariance matrix ] Orbital Elements at Epoch 2457609.5 (2016-Aug-09.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1802269949843384 6.15e-08   q 1.95926478330566 1.4125e-07 au tp 2457428.824679341309 (2016-Feb-10.32467934) 0.00012682 TDB node 224.0875329473143 0.00016219 deg peri 191.7949683854897 0.00016744 deg i 1.902198896100662 6.6581e-06 deg   Orbit Determination Parameters    # obs. used (total)      86      data-arc span      6526 days (17.87 yr)      first obs. used      2002-03-12      last obs. used      2020-01-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47236      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 11:33:41   Additional Information  Jupiter MOID = 2.52008 au   T_jup = 3.509  Orbit Covariance (6×6)   e q tp node peri i e 3.782277234174617E-15 -8.652820475727228E-15 -3.605115974963194E-12 -1.40878423143465E-14 -1.186023038213887E-12 -4.183466720936102E-15 q -8.652820475727228E-15 1.995210796407627E-14 7.637517843795451E-12 2.190061459230534E-14 2.5215601873842E-12 9.940279879708877E-15 tp -3.605115974963194E-12 7.637517843795451E-12 1.608205095292507E-8 2.250427476846988E-10 5.300932754245338E-9 1.201109147720436E-12 node -1.40878423143465E-14 2.190061459230534E-14 2.250427476846988E-10 2.630495903334159E-8 -2.621212791667051E-8 -1.687421204950044E-10 peri -1.186023038213887E-12 2.5215601873842E-12 5.300932754245338E-9 -2.621212791667051E-8 2.80367624869756E-8 1.689884846902516E-10 i -4.183466720936102E-15 9.940279879708877E-15 1.201109147720436E-12 -1.687421204950044E-10 1.689884846902516E-10 4.433071925661023E-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 18.3   n/a MPO495254   452158 (2015 RM54)          Discovered 2004-Sep-22 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-11-30 Alternate Designations  2015 RM54 = 2004 TK371 = 2004 TT  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-27 11:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin