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1033 Simona (A924 RH)
Classification: Main-belt Asteroid          SPK-ID: 2001033
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179691438086478 3.907e-08  
a 3.001937232886029 1.3674e-08 au
q 2.647801267755162 1.1883e-07 au
i 10.66280450347739 4.5728e-06 deg
node 188.9504951680267 1.9943e-05 deg
peri 217.7662904925458 2.5925e-05 deg
M 22.03528385020362 1.627e-05 deg
tp 2458484.216796821015
(2018-Dec-31.71679682)
8.5862e-05 TDB
period 1899.769180602039
5.20
1.298e-05
3.554e-08
d
yr
n .1894967050080871 1.2947e-09 deg/d
Q 3.356073198016895 1.5287e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2382  
   data-arc span      30662 days (83.95 yr)  
   first obs. used      1935-11-19  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43617  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:00:22  

Additional Information
 Earth MOID = 1.66453 au 
 Jupiter MOID = 2.09685 au 
 T_jup = 3.216 
[ 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 11.1   n/a MPO267710  
diameter diameter 19.195 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.07 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Shipley, H.; Dillard, A.; Kendall, J.; Reichert, M.; et al. (2008) Minor Planet Bull. 35, 99-101.]
geometric albedo albedo 0.196   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1033 Simona (A924 RH)          Discovered 1924-Sep-04 by Van Biesbroeck, G. at Williams Bay
Independent discovery Sept. 5 by S. Belyavskij, Simeis, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A924 RH = 1937 CG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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