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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455576.5 (2011-Jan-15.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1750198972760391 3.156e-08  
q 2.246795921138701 8.6475e-08 au
tp 2455511.114758205835
(2010-Nov-10.61475821)
5.0863e-05 TDB
node 68.96625335010145 4.2617e-05 deg
peri 42.04817087092859 4.4144e-05 deg
i 5.009760069879262 3.8053e-06 deg
  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
 Jupiter MOID = 1.93447 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.96054640376693E-16 -2.72255494944432E-15 1.262989707539783E-14 -3.331821238019394E-16 6.218804604006924E-16 -5.542539057390904E-16
q -2.72255494944432E-15 7.477936460120012E-15 -1.010395326107888E-13 -6.477588701653829E-16 -1.602331040842083E-14 1.830670153062609E-15
tp 1.262989707539783E-14 -1.010395326107888E-13 2.58706024824835E-9 7.553501712769408E-12 6.002549588481543E-10 -1.157801301531234E-12
node -3.331821238019394E-16 -6.477588701653829E-16 7.553501712769408E-12 1.816214438970791E-9 -1.807337710945894E-9 -7.578740123559405E-12
peri 6.218804604006924E-16 -1.602331040842083E-14 6.002549588481543E-10 -1.807337710945894E-9 1.948704506330251E-9 7.348959660026128E-12
i -5.542539057390904E-16 1.830670153062609E-15 -1.157801301531234E-12 -7.578740123559405E-12 7.348959660026128E-12 1.448026199255628E-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 9.35   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

[ show close-approach data ]
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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