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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1761143328625685 3.1429e-08  
a 2.72216836742218 7.2822e-09 au
q 2.242755501454035 8.6142e-08 au
i 5.010303911741574 3.8066e-06 deg
node 68.89265085233031 4.2617e-05 deg
peri 41.71510388222917 4.4135e-05 deg
M 89.56863376099669 1.0902e-05 deg
tp 2458792.345724325616
(2019-Nov-04.84572433)
4.9535e-05 TDB
period 1640.479854084391
4.49
6.5828e-06
1.802e-08
d
yr
n .2194479859680621 8.8058e-10 deg/d
Q 3.201581233390324 8.5647e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3342  
   data-arc span      43098 days (118.00 yr)  
   first obs. used      1903-01-19  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44232  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:03:39  

Additional Information
 Earth MOID = 1.26225 au 
 Jupiter MOID = 1.93447 au 
 T_jup = 3.330 
[ 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 9.35   n/a E2021B10  
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. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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 1.94781660679884 1.94781628138232 1.94781693221535 2.08224517509403 1.86172772374204 2420346.790328168 1.10192548461074 66.6103145687694 11.4886235039335 -89.4964243250354 3017472.95665308 T 57 CATAB v2.0f-lin.ifort 2021-Feb-24 19:03:48 2021-Feb-24 19:03
2008-Aug-19 21:35 < 00:01 Jupiter 1.97468860207991 1.97468832256156 1.97468888159816 2.05720289724737 1.83690069925022 2454698.399633524 0.162894743099548 43.5806826404333 10.597178635258 78.3415292051069 3245273.03338848 T 57 CATAB v2.0f-lin.ifort 2021-Feb-24 19:03:48 2021-Feb-24 19:03
2044-Dec-07 11:17 < 00:01 Jupiter 1.94007147657585 1.94007118596825 1.94007176718345 2.00278617923303 1.77143037193384 2467956.970220166 0.439427747102896 46.1253731962654 12.1746143826955 83.1186114276939 3183348.36922973 T 57 CATAB v2.0f-lin.ifort 2021-Feb-24 19:03:48 2021-Feb-24 19:03
2081-Mar-29 05:10 < 00:01 Jupiter 1.99383060001643 1.99383017326962 1.99383102676323 2.45500610511238 2.27539261783709 2481217.715531857 0.846500583019296 54.9850416897802 5.57343737961517 87.4238350232496 2648750.39320604 T 57 CATAB v2.0f-lin.ifort 2021-Feb-24 19:03:48 2021-Feb-24 19:03
2138-Dec-27 16:39 00:01 Jupiter 1.99977696125293 1.9997763815325 1.99977754097324 2.13114094956343 1.92214587405364 2502309.193818432 1.4885908466112 60.8460831817681 12.210330773169 88.1826948436244 2650182.17080361 T 57 CATAB v2.0f-lin.ifort 2021-Feb-24 19:03:48 2021-Feb-24 19:03
2175-Apr-16 04:08 00:02 Jupiter 1.93540455324721 1.9354042561415 1.93540485035281 1.95080815254307 1.71182942437438 2515567.672386000 1.90767181111959 102.799433356028 17.1890569907514 -86.7436721069904 3224819.03032131 T 57 CATAB v2.0f-lin.ifort 2021-Feb-24 19:03:48 2021-Feb-24 19:03

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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