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85691 (1998 RH57)
Classification: Main-belt Asteroid          SPK-ID: 2085691
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1663030708421017 4.6991e-08  
a 2.625568575648699 1.1129e-08 au
q 2.188928458811797 1.252e-07 au
i 3.108094276787511 5.3253e-06 deg
node 1.630051930964771 7.3679e-05 deg
peri 302.9043974298249 7.5081e-05 deg
M 74.48932236856064 1.2933e-05 deg
tp 2458678.967410346739
(2019-Jul-14.46741035)
5.5897e-05 TDB
period 1553.937243548192
4.25
9.8803e-06
2.705e-08
d
yr
n .2316695873624804 1.473e-09 deg/d
Q 3.062208692485601 1.298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      676  
   data-arc span      9128 days (24.99 yr)  
   first obs. used      1994-11-05  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55967  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:18:19  

Additional Information
 Earth MOID = 1.17577 au 
 Jupiter MOID = 2.18239 au 
 T_jup = 3.381 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457027.5 (2015-Jan-05.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1669667928317634 4.6957e-08  
q 2.187294883304707 1.2533e-07 au
tp 2457126.917702445679
(2015-Apr-14.41770245)
5.7178e-05 TDB
node 1.700325167237699 7.3589e-05 deg
peri 303.3042469015277 7.4976e-05 deg
i 3.110834440700477 5.3276e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      676  
   data-arc span      9128 days (24.99 yr)  
   first obs. used      1994-11-05  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55967  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:18:19  

Additional Information
 Jupiter MOID = 2.18239 au 
 T_jup = 3.381 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.204963223979793E-15 -5.869310706251182E-15 1.070927702104839E-12 1.863337058729371E-15 2.322495441620637E-13 -3.142069008466963E-15
q -5.869310706251182E-15 1.570843540334945E-14 -2.945494788331221E-12 -6.582966396822219E-15 -6.415791051118576E-13 8.649804173343122E-15
tp 1.070927702104839E-12 -2.945494788331221E-12 3.269358422272225E-9 4.633894436123708E-12 8.327385286593156E-10 -2.527012739453093E-12
node 1.863337058729371E-15 -6.582966396822219E-15 4.633894436123708E-12 5.415276538974125E-9 -5.405708027600987E-9 -1.149906123466024E-10
peri 2.322495441620637E-13 -6.415791051118576E-13 8.327385286593156E-10 -5.405708027600987E-9 5.621403256028997E-9 1.14273841683977E-10
i -3.142069008466963E-15 8.649804173343122E-15 -2.527012739453093E-12 -1.149906123466024E-10 1.14273841683977E-10 2.838316185470781E-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 15.7   n/a MPO502666  

85691 (1998 RH57)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 RH57 = 2002 NM47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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