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52857 (1998 RT78)
Classification: Main-belt Asteroid          SPK-ID: 2052857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1568765958490769 7.9925e-08  
a 2.299341121582095 8.0366e-09 au
q 1.938628313732498 1.8243e-07 au
i 7.034153454627019 5.1231e-06 deg
node 143.1026517417517 4.8685e-05 deg
peri 197.3953350554743 5.1556e-05 deg
M 96.54725780653531 1.8494e-05 deg
tp 2458658.960468137459
(2019-Jun-24.46046814)
6.5234e-05 TDB
period 1273.513450966101
3.49
6.6767e-06
1.828e-08
d
yr
n .2826825266171317 1.482e-09 deg/d
Q 2.660053929431692 9.2973e-09 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      7822 days (21.42 yr)  
   first obs. used      1998-08-28  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54464  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:37:02  

Additional Information
 Earth MOID = .930879 au 
 Jupiter MOID = 2.7197 au 
 T_jup = 3.566 
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Orbital Elements at Epoch 2457036.5 (2015-Jan-14.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1578492543051247 8.0176e-08  
q 1.935717673638015 1.8318e-07 au
tp 2457385.891038776628
(2015-Dec-29.39103878)
6.4538e-05 TDB
node 143.1708689956808 4.8682e-05 deg
peri 197.4168991576037 5.151e-05 deg
i 7.035556087978944 5.1279e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      7822 days (21.42 yr)  
   first obs. used      1998-08-28  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54464  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:37:02  

Additional Information
 Jupiter MOID = 2.7197 au 
 T_jup = 3.566 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.428111733373314E-15 -1.467703786405772E-14 3.834324009262847E-12 -1.3565754019774E-14 9.107099207441485E-13 -3.037092261486489E-14
q -1.467703786405772E-14 3.355523226886157E-14 -8.829428521011294E-12 3.187461279560102E-14 -2.104378496077953E-12 6.972989056450393E-14
tp 3.834324009262847E-12 -8.829428521011294E-12 4.165210189358373E-9 -5.432442763834428E-12 1.125512750374745E-9 -2.254091111311821E-11
node -1.3565754019774E-14 3.187461279560102E-14 -5.432442763834428E-12 2.369972520529859E-9 -2.353181979635252E-9 1.609431301171306E-10
peri 9.107099207441485E-13 -2.104378496077953E-12 1.125512750374745E-9 -2.353181979635252E-9 2.653234778546515E-9 -1.654236828449345E-10
i -3.037092261486489E-14 6.972989056450393E-14 -2.254091111311821E-11 1.609431301171306E-10 -1.654236828449345E-10 2.629526734716717E-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 15.6   n/a MPO299314  

52857 (1998 RT78)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RT78 = 2000 DU24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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