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JPL Small-Body Database Browser
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493 Griseldis (A902 RH)
Classification: Main-belt Asteroid          SPK-ID: 2000493
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 71 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1758681016001583 3.3074e-08  
a 3.117578299478672 1.1842e-08 au
q 2.569295722359509 1.0314e-07 au
i 15.17499462215737 4.1608e-06 deg
node 357.3388126023187 1.3256e-05 deg
peri 46.91758408108286 1.7934e-05 deg
M 84.20940306943928 1.1121e-05 deg
tp 2458530.191779735868
(2019-Feb-15.69177974)
6.1599e-05 TDB
period 2010.594460044722
5.50
1.1456e-05
3.136e-08
d
yr
n .1790515228973587 1.0202e-09 deg/d
Q 3.665860876597837 1.3925e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2548  
   data-arc span      42968 days (117.64 yr)  
   first obs. used      1902-09-07  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42018  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:06:54  

Additional Information
 Earth MOID = 1.60172 au 
 Jupiter MOID = 1.94148 au 
 T_jup = 3.140 
[ 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 10.9   n/a MPO452163  
diameter diameter 41.550 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 51.940 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2008) Minor Planet Bull. 35, 60-61.]
geometric albedo albedo 0.081   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

493 Griseldis (A902 RH)          Discovered 1902-Sep-07 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A902 RH = A915 BB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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