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503 Evelyn (A903 BL)
Classification: Main-belt Asteroid          SPK-ID: 2000503
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 55 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1761898229801972 3.1515e-08  
a 2.722686477992164 7.3351e-09 au
q 2.242976829404148 8.6446e-08 au
i 5.010119130874364 3.8146e-06 deg
node 68.89554477883894 4.2673e-05 deg
peri 41.7656828591643 4.419e-05 deg
M 45.62698234044559 1.0889e-05 deg
tp 2458792.523567494177
(2019-Nov-05.02356749)
4.9568e-05 TDB
period 1640.948225404054
4.49
6.6313e-06
1.816e-08
d
yr
n .2193853495355446 8.8656e-10 deg/d
Q 3.202396126580181 8.6275e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3299  
   data-arc span      42884 days (117.41 yr)  
   first obs. used      1903-01-19  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44485  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:15:22  

Additional Information
 Earth MOID = 1.2626 au 
 Jupiter MOID = 1.93377 au 
 T_jup = 3.330 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455547.5 (2010-Dec-17.0) TDB
Reference: JPL 55 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1749925491197815 3.1646e-08  
q 2.246789768830242 8.6739e-08 au
tp 2455511.098831211236
(2010-Nov-10.59883121)
5.0918e-05 TDB
node 68.9666302766734 4.2673e-05 deg
peri 42.04290967629784 4.4202e-05 deg
i 5.009780573751694 3.8134e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3299  
   data-arc span      42884 days (117.41 yr)  
   first obs. used      1903-01-19  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44485  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:15:22  

Additional Information
 Jupiter MOID = 1.93377 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.001460591666754E-15 -2.738275789852328E-15 1.361159820450857E-14 -3.437061070607952E-16 1.224081746154343E-15 -5.693267040361204E-16
q -2.738275789852328E-15 7.523677482401944E-15 -1.03845664450807E-13 -6.144117999192129E-16 -1.778053681241568E-14 1.876229716747457E-15
tp 1.361159820450857E-14 -1.03845664450807E-13 2.592662351718382E-9 7.560073774359197E-12 6.016629430594584E-10 -1.169073713941972E-12
node -3.437061070607952E-16 -6.144117999192129E-16 7.560073774359197E-12 1.820989765772351E-9 -1.812089082912273E-9 -7.207368089567426E-12
peri 1.224081746154343E-15 -1.778053681241568E-14 6.016629430594584E-10 -1.812089082912273E-9 1.953813021101957E-9 6.975930883139071E-12
i -5.693267040361204E-16 1.876229716747457E-15 -1.169073713941972E-12 -7.207368089567426E-12 6.975930883139071E-12 1.454207400884803E-11

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 9.3   n/a MPO431497  
diameter diameter 81.68 km 4.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 38.780 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Kamel, L.; Lundgren, K. (1999) Minor Planet Bull. 26, 4-5.]
[Fauerbach, M.; Bennett, T.; Marks, S.A. (2007) Minor Planet Bull. 34, 57-58.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Mansego, E.A.; Rodriguez, P.B.; de Haro, J.L.; Chiner, O.R.; et al. (2016) Minor Planet Bull. 43, 332-336.]
geometric albedo albedo 0.0585   0.008 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV 0.725   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=17.75 deg.
U-B UB 0.315   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=17.75 deg.
Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

503 Evelyn (A903 BL)          Discovered 1903-Jan-19 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
1914-Aug-02 06:58 00:01 Jupiter 1.94781660810281 1.94781628244016 1.94781693376546 2.08224514759341 1.86172769314039 2420346.790315966 1.1046748117005 66.7665976164526 11.4924597875334 -89.5078380807403 3013386.74539774 T 55 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:36 2020-Jun-23 15:15
2008-Aug-19 21:35 < 00:01 Jupiter 1.97468860379489 1.97468832383651 1.97468888375314 2.05720291670748 1.83690072124702 2454698.399631075 0.163070607566089 43.6275994043621 10.63162136489 78.3302102617408 3237708.78254902 T 55 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:36 2020-Jun-23 15:15
2044-Dec-07 11:17 < 00:01 Jupiter 1.94007147853859 1.9400711871973 1.94007176987978 2.00278619212733 1.77143038676153 2467956.970222624 0.440937461603162 46.1589434086631 12.2351251243114 83.1600809231008 3172536.83554076 T 55 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:36 2020-Jun-23 15:15
2081-Mar-29 05:10 < 00:01 Jupiter 1.99383060385458 1.99383017560551 1.99383103210372 2.45500624315696 2.27539276713795 2481217.715549354 0.849136743533965 55.0668957435902 5.5870356102395 87.421532506142 2639731.2986852 T 55 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:36 2020-Jun-23 15:15
2138-Dec-27 16:39 00:02 Jupiter 1.99977695724617 1.99977637704639 1.99977753744585 2.13114096460553 1.92214589028976 2502309.193825690 1.49331197509732 60.9978288302846 12.2582896676649 88.2166823268865 2649200.49438588 T 55 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:36 2020-Jun-23 15:15
2175-Apr-16 04:08 00:02 Jupiter 1.93540455373679 1.9354042563776 1.93540485109587 1.95080816877305 1.71182944293481 2515567.672404097 1.91351938920895 103.050548619407 17.2405780855246 -86.6956457425748 3215561.56729832 T 55 CATAB v2.0f-lin.ifort 2020-Jun-23 15:15:36 2020-Jun-23 15:15

Alternate Designations
 A903 BL = 1948 BA = 1948 DA = A899 GA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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