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85686 (1998 RC44)
Classification: Main-belt Asteroid          SPK-ID: 2085686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2021906284284669 5.1453e-08  
a 2.563483070213935 1.4345e-08 au
q 2.045170817281644 1.2857e-07 au
i 5.368594623496312 6.4142e-06 deg
node 139.2703523434882 5.726e-05 deg
peri 207.7589462176906 5.9771e-05 deg
M 108.5450752893051 2.0379e-05 deg
tp 2458548.486161808812
(2019-Mar-05.98616181)
8.2432e-05 TDB
period 1499.146610890607
4.10
1.2584e-05
3.445e-08
d
yr
n .240136619984174 2.0157e-09 deg/d
Q 3.081795323146227 1.7245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      267  
   data-arc span      8343 days (22.84 yr)  
   first obs. used      1997-04-12  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:09  

Additional Information
 Earth MOID = 1.03982 au 
 Jupiter MOID = 2.33786 au 
 T_jup = 3.399 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456817.5 (2014-Jun-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2042677386815046 5.1832e-08  
q 2.038904654875658 1.299e-07 au
tp 2457047.897689732169
(2015-Jan-25.39768973)
7.3535e-05 TDB
node 139.4013620686703 5.716e-05 deg
peri 207.2683596022728 5.9589e-05 deg
i 5.373615047233492 6.4222e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      267  
   data-arc span      8343 days (22.84 yr)  
   first obs. used      1997-04-12  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:09  

Additional Information
 Jupiter MOID = 2.33786 au 
 T_jup = 3.399 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.686538281193527E-15 -6.709814763532929E-15 -1.080203994330823E-13 -9.459734418016388E-15 -5.748309310235237E-14 7.360707242832114E-16
q -6.709814763532929E-15 1.687468723828193E-14 7.263885917430388E-13 2.262801932142108E-14 2.401086165450513E-13 -1.772629386100906E-15
tp -1.080203994330823E-13 7.263885917430388E-13 5.407343451491993E-9 -1.274421596559605E-11 1.262397019108328E-9 -2.434196124576286E-12
node -9.459734418016388E-15 2.262801932142108E-14 -1.274421596559605E-11 3.267242301452625E-9 -3.255142809991028E-9 -5.846728419150578E-11
peri -5.748309310235237E-14 2.401086165450513E-13 1.262397019108328E-9 -3.255142809991028E-9 3.55090447835106E-9 5.757865210380217E-11
i 7.360707242832114E-16 -1.772629386100906E-15 -2.434196124576286E-12 -5.846728419150578E-11 5.757865210380217E-11 4.124404554299286E-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 16.2   n/a MPO453287  

85686 (1998 RC44)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1998 RC44 = 2002 PC134 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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