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91531 (1999 RH195)
Classification: Main-belt Asteroid          SPK-ID: 2091531
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1876926515650681 5.8377e-08  
a 2.929784787448276 1.545e-08 au
q 2.37988571217711 1.6869e-07 au
i 11.71654815694357 4.5557e-06 deg
node 224.83814134698 2.9089e-05 deg
peri 98.53748905601428 3.1549e-05 deg
M 139.6845229578602 1.1774e-05 deg
tp 2458685.781214811785
(2019-Jul-21.28121481)
5.8276e-05 TDB
period 1831.690134668281
5.01
1.4489e-05
3.967e-08
d
yr
n .1965397930503109 1.5546e-09 deg/d
Q 3.479683862719442 1.835e-08 au
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      8336 days (22.82 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-02-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5457  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:48  

Additional Information
 Earth MOID = 1.40254 au 
 Jupiter MOID = 2.02245 au 
 T_jup = 3.219 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.92   n/a MPCxxxxx  

91531 (1999 RH195)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 RH195 = 1998 HW86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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