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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .008150031839207967 3.4827e-08  
a 3.162471256662869 1.295e-08 au
q 3.136697015230487 1.0852e-07 au
i 13.33411050202178 4.0436e-06 deg
node 44.20427806149904 1.4748e-05 deg
peri 202.9956653992034 0.00025639 deg
M 262.5673208828097 0.00025746 deg
tp 2459556.456037751308
(2021-Dec-07.95603775)
0.0014701 TDB
period 2054.179105038681
5.62
1.2618e-05
3.455e-08
d
yr
n .1752524885084064 1.0765e-09 deg/d
Q 3.188245498095252 1.3056e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2737  
   data-arc span      40975 days (112.18 yr)  
   first obs. used      1908-04-07  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39991  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:15:21  

Additional Information
 Earth MOID = 2.1275 au 
 Jupiter MOID = 1.78755 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-August); 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

[ show close-approach data ]
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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