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
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1761143277766588 1.0536e-08  
a 2.722168374435296 6.4034e-09 au
q 2.242755521076744 2.7555e-08 au
i 5.010302916617226 4.5326e-07 deg
node 68.89264165201978 3.3931e-06 deg
peri 41.71511066240816 9.6963e-06 deg
M 89.5686302741214 6.9493e-06 deg
tp 2458792.345738637628
(2019-Nov-04.84573864)		 3.1683e-05 TDB
period 1640.479860423938
4.49		 5.7884e-06
1.585e-08		 d
yr
n .219447985120017 7.7432e-10 deg/d
Q 3.201581227793849 7.5312e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3421  
   data-arc span      43148 days (118.13 yr)  
   first obs. used      1903-01-19  
   last obs. used      2021-03-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43676  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:59:29  

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

[ 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 2021-Apr-14 06:23 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin