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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 101 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .007907439924479386 1.6049e-08  
a 3.160985586640591 9.1163e-09 au
q 3.135990283012085 5.1666e-08 au
i 13.33662261859 5.2606e-07 deg
node 44.19386101884074 1.2822e-06 deg
peri 205.9141189785918 0.00013039 deg
M 329.0778772521173 0.00012801 deg
tp 2459572.818953387002
(2021-Dec-24.31895339)
0.00072974 TDB
period 2052.731752501276
5.62
8.8801e-06
2.431e-08
d
yr
n .1753760565945044 7.5868e-10 deg/d
Q 3.185980890269096 9.1884e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3337  
   data-arc span      41422 days (113.41 yr)  
   first obs. used      1908-03-12  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38314  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:42:13  

Additional Information
 Earth MOID = 2.12743 au 
 Jupiter MOID = 1.78816 au 
 T_jup = 3.163 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455894.5 (2011-Nov-29.0) TDB
Reference: JPL 101 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01232678383034555 1.2359e-08  
q 3.119834079305735 3.92e-08 au
tp 2455322.588335800800
(2010-May-06.08833580)
0.00052985 TDB
node 44.48508652292773 1.2698e-06 deg
peri 180.7405643921593 9.5106e-05 deg
i 13.36503819827433 5.2728e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3337  
   data-arc span      41422 days (113.41 yr)  
   first obs. used      1908-03-12  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38314  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:42:13  

Additional Information
 Jupiter MOID = 1.78816 au 
 T_jup = 3.163 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.527451532681712E-16 -4.722305246914958E-16 2.094385797466463E-12 -5.490746886853285E-15 3.888182929389024E-13 3.92783471667972E-16
q -4.722305246914958E-16 1.536641370990003E-15 -7.596934409271498E-12 1.761207612979332E-14 -1.391617735033691E-12 -1.558031412679821E-15
tp 2.094385797466463E-12 -7.596934409271498E-12 2.807401694619879E-7 -1.385953220711433E-10 5.037976008892724E-8 3.068177559621342E-11
node -5.490746886853285E-15 1.761207612979332E-14 -1.385953220711433E-10 1.612416527571447E-12 -2.642224701828564E-11 -1.609259845321433E-13
peri 3.888182929389024E-13 -1.391617735033691E-12 5.037976008892724E-8 -2.642224701828564E-11 9.045104182874745E-9 5.754392443650694E-12
i 3.92783471667972E-16 -1.558031412679821E-15 3.068177559621342E-11 -1.609259845321433E-13 5.754392443650694E-12 2.780200204913506E-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 8.42   n/a MPO636068  
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

[ hide close-approach data ]
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 00:01 Jupiter 1.8903763304477 1.89037584477081 1.89037681612621 4.42159124763313 4.31906557952848 2421531.780910458 1.22332089564287 92.5749259083688 5.20329419961716 -74.8909125041262 14301380.4126349 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43
1928-Jul-16 07:49 00:01 Jupiter 1.80079624915599 1.80079611097403 1.80079638733806 4.44090641520543 4.33369701324772 2425443.825587647 1.07289452306835 29.0414373951613 3.74808798977548 -78.0877706008479 15701076.9884725 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43
1939-Mar-13 14:04 00:01 Jupiter 1.98674751079015 1.98674713854178 1.98674788303964 3.87958902787507 3.76809481002551 2429336.086267175 1.02484960007198 80.2389950750688 3.96494605338619 -75.887923366371 11036520.8662914 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43
2024-Sep-20 07:43 < 00:01 Jupiter 1.91918603370204 1.91918583322313 1.91918623418095 4.335191393529 4.23216198824749 2460573.821410977 0.221256504872485 19.0604079320771 4.37027101976034 -62.8194981426107 15524711.0637235 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43
2035-Jun-06 19:43 < 00:01 Jupiter 1.79606810385736 1.79606798271536 1.79606822499945 4.49240265626118 4.3861697637832 2464485.321452172 0.336964290472611 21.5746830422764 3.82221833295347 -78.6142788553013 19591453.2999782 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43
2046-Feb-06 01:10 < 00:01 Jupiter 1.96110639948971 1.96110608707562 1.96110671190435 4.04160858072134 3.93329109689161 2468382.548662800 0.507242963408242 58.2479524665266 3.69454298420708 -75.0439300858542 16784030.253395 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43
2131-Aug-14 05:49 00:02 Jupiter 1.94737190277216 1.9473712088139 1.94737259673253 4.22391983158103 4.11965839451766 2499616.742701154 1.59723894781234 108.835395899419 5.79420111820376 -70.8943480191419 13073180.1616472 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43
2142-Apr-27 22:16 00:02 Jupiter 1.79344160453099 1.79344149719666 1.79344171186533 4.51361121974751 4.40773280728869 2503526.427552893 1.67001695078446 40.5000261605425 4.61699520504103 -87.3912122643907 18441067.3811377 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43
2153-Jan-04 09:43 00:02 Jupiter 1.92625941916191 1.92625861472777 1.92626022360383 4.18900388237738 4.08268361641299 2507430.904820661 1.93220435397152 201.530824569768 3.66004169303536 -78.0617596206685 14540532.9287683 T 101 CATAB v2.0g-lin.ifort 2021-Aug-25 06:43:57 2021-Aug-25 06:43

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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