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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1945-Oct-25 16:37 < 00:01 Juno 0.0401424490457502 0.0401325954279875 0.0401523040861554 8.26423359387215 8.26423355719973 2431754.192354554 0.697160424357922 620.446539198354 52.4871908141004 37.8018974923434 70525.1086176351 T 19 CATAB v2.0f-lin.ifort 2019-Dec-04 08:18:22 2019-Dec-04 08:18

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