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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 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Oct-30 06:45 00:02 Jupiter 1.89037633833926 1.89037561054825 1.89037706613295 4.42159298599239 4.31906735901274 2421531.780913096 1.61845976339469 132.910766445411 13.3468463623034 -75.1792908454617 4255735.30881322 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15
1928-Jul-16 07:49 00:01 Jupiter 1.80079639900709 1.80079597228525 1.80079682572975 4.44090820050014 4.33369885114009 2425443.825740648 1.41241203037208 134.344643589486 16.9795777502811 -85.1159347905757 4070817.81028938 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15
1939-Mar-13 14:05 00:01 Jupiter 1.98674772678813 1.98674701750292 1.98674843607469 3.87959025608705 3.76809608625493 2429336.086502020 1.33936928738794 127.300726615231 23.9330060309947 -78.0067773232401 3867018.35957166 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15
2024-Sep-20 07:43 < 00:01 Jupiter 1.9191860490755 1.91918567143431 1.9191864267168 4.33519348044742 4.23216412622991 2460573.821246206 0.292256342367314 52.9224463702863 13.039736087609 -77.0816710151812 4269699.2129317 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15
2035-Jun-06 19:43 < 00:01 Jupiter 1.79606832344659 1.79606794817228 1.7960686987214 4.49240461809938 4.3861717856885 2464485.321261345 0.452856612396153 119.366633305674 14.8571886035432 -85.5119575729327 4115570.99549756 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15
2046-Feb-06 01:10 < 00:01 Jupiter 1.96110689125152 1.96110643952377 1.96110734297939 4.04160951807444 3.93329208698689 2468382.548394271 0.692689560609538 89.8711450585534 20.3614240311068 -85.142342572428 4026879.27984017 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15
2131-Aug-14 05:48 00:02 Jupiter 1.94737162572202 1.94737068865027 1.94737256279753 4.22392271647843 4.11966133682268 2499616.741958241 2.13666685311829 152.555705354072 13.1793082859638 -72.2412339115206 4197189.43897538 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15
2142-Apr-27 22:15 00:02 Jupiter 1.79344178311479 1.79344140655915 1.79344215967113 4.51361335447737 4.40773500337464 2503526.426817033 2.23825950812569 123.4304878146 14.4965468434614 -85.4010308149798 4053946.01774999 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15
2153-Jan-04 09:42 00:03 Jupiter 1.92626018615114 1.92625919795064 1.92626117436215 4.18900416323333 4.08268394687325 2507430.903932930 2.59500619345531 263.516977108605 22.4011229714868 -79.7285720794319 4101478.26502318 T 90 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:35 2020-Jun-23 15:15

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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