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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 97 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .008055751073769072 1.5816e-08  
a 3.161760388209087 9.3225e-09 au
q 3.136290033566771 5.0908e-08 au
i 13.33513798965175 5.2637e-07 deg
node 44.19669531824036 1.2832e-06 deg
peri 204.5179380201866 0.00012962 deg
M 296.1016369923449 0.00012724 deg
tp 2459564.984521181872
(2021-Dec-16.48452118)
0.00072543 TDB
period 2053.486528438205
5.62
9.0821e-06
2.487e-08
d
yr
n .17531159567616 7.7537e-10 deg/d
Q 3.187230742851403 9.3976e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2981  
   data-arc span      41258 days (112.96 yr)  
   first obs. used      1908-04-07  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39726  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:30:06  

Additional Information
 Earth MOID = 2.12589 au 
 Jupiter MOID = 1.78775 au 
 T_jup = 3.163 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455688.5 (2011-May-07.0) TDB
Reference: JPL 97 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01249102622880407 1.2411e-08  
q 3.119616476569758 3.9448e-08 au
tp 2455324.625036056290
(2010-May-08.12503606)
0.00052193 TDB
node 44.48412934647971 1.2705e-06 deg
peri 181.0934164970361 9.3691e-05 deg
i 13.36500053734719 5.2764e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2981  
   data-arc span      41258 days (112.96 yr)  
   first obs. used      1908-04-07  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39726  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:30:06  

Additional Information
 Jupiter MOID = 1.78775 au 
 T_jup = 3.163 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.540349282863977E-16 -4.76904744110284E-16 2.100498631337127E-12 -5.538138186952822E-15 3.901687895870541E-13 3.919911503657991E-16
q -4.76904744110284E-16 1.556181893118102E-15 -7.665777579292209E-12 1.777060670313385E-14 -1.40440996532058E-12 -1.597384868493015E-15
tp 2.100498631337127E-12 -7.665777579292209E-12 2.72409649882888E-7 -1.358445958796587E-10 4.888758489171224E-8 3.017426407034501E-11
node -5.538138186952822E-15 1.777060670313385E-14 -1.358445958796587E-10 1.614167092218938E-12 -2.594075994533297E-11 -1.603941971006791E-13
peri 3.901687895870541E-13 -1.40440996532058E-12 4.888758489171224E-8 -2.594075994533297E-11 8.777915553487893E-9 5.659022752630681E-12
i 3.919911503657991E-16 -1.597384868493015E-15 3.017426407034501E-11 -1.603941971006791E-13 5.659022752630681E-12 2.784063505735265E-13

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 8.41   n/a E2021B10  
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. 2020-October); 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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