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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180885441800981 3.253e-08  
a 3.001317793809297 1.2359e-08 au
q 2.646896544916533 9.5866e-08 au
i 10.66374009117071 3.8603e-06 deg
node 188.9367725658086 1.8616e-05 deg
peri 217.6363523189299 2.5e-05 deg
M 97.96451557742098 1.6091e-05 deg
tp 2458483.687872880516
(2018-Dec-31.18787288)
8.5045e-05 TDB
period 1899.181195011143
5.20
1.1731e-05
3.212e-08
d
yr
n .1895553730974509 1.1708e-09 deg/d
Q 3.35573904270206 1.3818e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2775  
   data-arc span      30842 days (84.44 yr)  
   first obs. used      1935-11-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40784  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:17:37  

Additional Information
 Earth MOID = 1.66411 au 
 Jupiter MOID = 2.09915 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456739.5 (2014-Mar-23.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151171701864945 3.2418e-08  
q 2.657669279092075 9.5111e-08 au
tp 2456587.794007841273
(2013-Oct-22.29400784)
8.9275e-05 TDB
node 189.0817135583829 1.8669e-05 deg
peri 218.4139361127326 2.5336e-05 deg
i 10.6424362573616 3.8543e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2775  
   data-arc span      30842 days (84.44 yr)  
   first obs. used      1935-11-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40784  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:17:37  

Additional Information
 Jupiter MOID = 2.09915 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.050904830784524E-15 -3.063287914167309E-15 -4.31085511138525E-13 3.391807591497423E-15 -1.078691141380642E-13 4.799765538486702E-16
q -3.063287914167309E-15 9.046025685715588E-15 1.035563986463225E-12 -1.014322537926268E-14 2.749956109398797E-13 -1.155537980650218E-15
tp -4.31085511138525E-13 1.035563986463225E-12 7.969947712788974E-9 -1.598054209059081E-11 1.541808097839017E-9 -3.683777468309548E-12
node 3.391807591497423E-15 -1.014322537926268E-14 -1.598054209059081E-11 3.485209583523101E-10 -3.454718887961162E-10 -8.190301062154772E-12
peri -1.078691141380642E-13 2.749956109398797E-13 1.541808097839017E-9 -3.454718887961162E-10 6.419029897387306E-10 7.331921634418439E-12
i 4.799765538486702E-16 -1.155537980650218E-15 -3.683777468309548E-12 -8.190301062154772E-12 7.331921634418439E-12 1.485545837278265E-11

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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