Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1761898239376515 3.1826e-08  
a 2.72268647774053 7.4439e-09 au
q 2.242976826590002 8.7438e-08 au
i 5.010119046250468 3.8788e-06 deg
node 68.89554465711802 4.269e-05 deg
peri 41.7656828450106 4.4213e-05 deg
M 45.62698265133571 1.0995e-05 deg
tp 2458792.523566105913
(2019-Nov-05.02356611)
5.0029e-05 TDB
period 1640.948225176566
4.49
6.7296e-06
1.842e-08
d
yr
n .2193853495659585 8.9971e-10 deg/d
Q 3.202396128891059 8.7555e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3193  
   data-arc span      42835 days (117.28 yr)  
   first obs. used      1903-01-19  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:06:54  

Additional Information
 Earth MOID = 1.2626 au 
 Jupiter MOID = 1.93377 au 
 T_jup = 3.330 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455458.5 (2010-Sep-19.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1748842362647964 3.1962e-08  
q 2.246789711437683 8.7729e-08 au
tp 2455511.078330769127
(2010-Nov-10.57833077)
5.1149e-05 TDB
node 68.96757849147707 4.269e-05 deg
peri 42.0353377174939 4.4227e-05 deg
i 5.009883415941088 3.8777e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3193  
   data-arc span      42835 days (117.28 yr)  
   first obs. used      1903-01-19  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:06:54  

Additional Information
 Jupiter MOID = 1.93377 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.021575177786748E-15 -2.797184048264085E-15 -6.437669362908837E-15 -2.206348924769114E-16 -2.079781535610119E-15 -5.941053165651673E-16
q -2.797184048264085E-15 7.696314356338851E-15 -4.398542550072759E-14 -9.788479112893725E-16 -7.903365960174076E-15 1.96249090700979E-15
tp -6.437669362908837E-15 -4.398542550072759E-14 2.616234703506707E-9 7.380471279090934E-12 6.058706965958894E-10 -1.163699325142958E-12
node -2.206348924769114E-16 -9.788479112893725E-16 7.380471279090934E-12 1.822469607247507E-9 -1.81358816539697E-9 -6.400445234739075E-12
peri -2.079781535610119E-15 -7.903365960174076E-15 6.058706965958894E-10 -1.81358816539697E-9 1.956045588390958E-9 6.174440810478902E-12
i -5.941053165651673E-16 1.96249090700979E-15 -1.163699325142958E-12 -6.400445234739075E-12 6.174440810478902E-12 1.503656685310041E-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

[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-28 09:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin