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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 118 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0590285855181408 1.9792e-08  
a 2.73778719283527 7.2645e-09 au
q 2.576179487392523 5.568e-08 au
i 3.172190090826925 5.1952e-07 deg
node 347.7178994851257 2.8833e-06 deg
peri 59.90943651114022 1.5721e-05 deg
M 75.68146014207952 1.374e-05 deg
tp 2459048.655644930988
(2020-Jul-18.15564493)
6.3389e-05 TDB
period 1654.618814036583
4.53
6.5856e-06
1.803e-08
d
yr
n .217572770807404 8.6597e-10 deg/d
Q 2.899394898278017 7.6933e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3320  
   data-arc span      51746 days (141.67 yr)  
   first obs. used      1879-09-26  
   last obs. used      2021-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41118  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:41:26  

Additional Information
 Earth MOID = 1.58673 au 
 Jupiter MOID = 2.31945 au 
 T_jup = 3.347 
[ 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 8.85   n/a E2021B10 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. 2020-October); 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

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