+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78626 (2002 TQ21) Classification: Main-belt Asteroid          SPK-ID: 2078626 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .229558886430874 4.5373e-08   a 2.299610937393248 1.0548e-08 au q 1.771714811380996 1.0482e-07 au i 2.42328689519347 5.0181e-06 deg node 108.9745910024506 0.00013337 deg peri 185.7079095979726 0.00013387 deg M 79.99248619797859 1.4179e-05 deg tp 2458717.473781059432 (2019-Aug-21.97378106) 4.9144e-05 TDB period 1273.737617886158 3.49 8.7636e-06 2.399e-08 d yr n .282632776911654 1.9446e-09 deg/d Q 2.8275070634055 1.2969e-08 au   Orbit Determination Parameters    # obs. used (total)      380      data-arc span      9277 days (25.40 yr)      first obs. used      1994-03-05      last obs. used      2019-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61004      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:26:10   Additional Information  Earth MOID = .755693 au   Jupiter MOID = 2.37778 au   T_jup = 3.556  [ hide covariance matrix ] Orbital Elements at Epoch 2456477.5 (2013-Jul-04.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2294359286204012 4.5341e-08   q 1.771991016892294 1.0474e-07 au tp 2456167.548174419015 (2012-Aug-28.04817442) 4.2895e-05 TDB node 108.9968819842642 0.00013338 deg peri 185.3123103489459 0.00013388 deg i 2.42273909948514 5.0185e-06 deg   Orbit Determination Parameters    # obs. used (total)      380      data-arc span      9277 days (25.40 yr)      first obs. used      1994-03-05      last obs. used      2019-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61004      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:26:10   Additional Information  Jupiter MOID = 2.37778 au   T_jup = 3.556  Orbit Covariance (6×6)   e q tp node peri i e 2.055844839409018E-15 -4.734341072059024E-15 -2.547829557419453E-13 -4.275681310442837E-14 2.115291009333057E-14 2.187226273253496E-16 q -4.734341072059024E-15 1.096948985497816E-14 6.558636222589707E-13 9.775049068497668E-14 -2.851654534313354E-14 -4.08115871124209E-16 tp -2.547829557419453E-13 6.558636222589707E-13 1.839983272141627E-9 4.804568583749163E-12 5.246281308004533E-10 1.222918952843053E-13 node -4.275681310442837E-14 9.775049068497668E-14 4.804568583749163E-12 1.778950030484304E-8 -1.777230298752897E-8 1.270965473255589E-11 peri 2.115291009333057E-14 -2.851654534313354E-14 5.246281308004533E-10 -1.777230298752897E-8 1.792371600906442E-8 -1.2648798056324E-11 i 2.187226273253496E-16 -4.08115871124209E-16 1.222918952843053E-13 1.270965473255589E-11 -1.2648798056324E-11 2.518504567213538E-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 16.5   n/a MPO474677   78626 (2002 TQ21)          Discovered 2002-Oct-02 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  2002 TQ21 = 1995 UK62  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-27 02:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin