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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180885440941483 3.2282e-08  
a 3.00131779378713 1.2295e-08 au
q 2.646896545154947 9.4964e-08 au
i 10.66374001072733 3.8393e-06 deg
node 188.9367721957728 1.8418e-05 deg
peri 217.636352621478 2.4836e-05 deg
M 97.96451562368367 1.609e-05 deg
tp 2458483.687872642183
(2018-Dec-31.18787264)
8.5035e-05 TDB
period 1899.181194990103
5.20
1.167e-05
3.195e-08
d
yr
n .1895553730995509 1.1648e-09 deg/d
Q 3.355739042419314 1.3747e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2871  
   data-arc span      30890 days (84.57 yr)  
   first obs. used      1935-11-19  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40655  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:23:12  

Additional Information
 Earth MOID = 1.66411 au 
 Jupiter MOID = 2.09915 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-August); 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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