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203 Pompeja (A879 SA)
Classification: Main-belt Asteroid          SPK-ID: 2000203
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 110 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05865641390632074 3.5961e-08  
a 2.736745228455919 8.2577e-09 au
q 2.57621756757946 9.9184e-08 au
i 3.172192676394068 4.4003e-06 deg
node 347.7240918277815 7.0194e-05 deg
peri 59.81831149823013 7.9674e-05 deg
M 349.5986598671233 3.7639e-05 deg
tp 2459048.278969525962
(2020-Jul-17.77896953)
0.00017293 TDB
period 1653.674315964251
4.53
7.4846e-06
2.049e-08
d
yr
n .2176970377568483 9.853e-10 deg/d
Q 2.897272889332378 8.7421e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2923  
   data-arc span      51495 days (140.99 yr)  
   first obs. used      1879-09-26  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42544  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:24:41  

Additional Information
 Earth MOID = 1.5873 au 
 Jupiter MOID = 2.32135 au 
 T_jup = 3.347 
[ 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 8.8   n/a MPO502154 IRAS observations used: 13
diameter diameter 124.592 km 1.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 24.052 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F.; Ferrero, A.; Hamanowa, H; Hamanowa, H. (2012) Minor Planet Bull. 39, 99.]
geometric albedo albedo 0.036   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.702   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.37 deg.
U-B UB 0.293   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.14, mean=7.26, max.=8.37) deg.
Tholen spectral type spec_T DCX:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

203 Pompeja (A879 SA)          Discovered 1879-Sep-25 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A879 SA = A895 EA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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