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JPL Small-Body Database Browser
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508 Princetonia (A903 HC)
Classification: Main-belt Asteroid          SPK-ID: 2000508
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .008176100103764121 4.0756e-08  
a 3.163204085863072 1.5455e-08 au
q 3.13734141260842 1.2357e-07 au
i 13.33512801465366 4.7151e-06 deg
node 44.21689312608716 1.5027e-05 deg
peri 200.6294997908561 0.00026049 deg
M 194.8603676271751 0.00026077 deg
tp 2459543.123057798427
(2021-Nov-24.62305780)
0.0014894 TDB
period 2054.893158786489
5.63
1.506e-05
4.123e-08
d
yr
n .1751915901129365 1.284e-09 deg/d
Q 3.189066759117724 1.5581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2251  
   data-arc span      40747 days (111.56 yr)  
   first obs. used      1908-04-07  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43281  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:54:09  

Additional Information
 Earth MOID = 2.12794 au 
 Jupiter MOID = 1.7869 au 
 T_jup = 3.162 
[ 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 8.4   n/a MPO296126  
diameter diameter 117.241 km 0.925 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 52.8 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Piironen, J.; Bowell, E.; Erikson, A.; Magnusson, P. (1994) Astron. Astrophys. Suppl. Ser. 106, 587-595.]
geometric albedo albedo 0.065   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.732   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=1.13, mean=5.20, max.=7.94) deg.
U-B UB 0.325   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=1.13, mean=5.20, max.=7.94) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

508 Princetonia (A903 HC)          Discovered 1903-Apr-20 by Dugan, R. S. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A903 HC = 1926 KA = A920 GF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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