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JPL Small-Body Database Browser
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506 Marion (A903 DB)
Classification: Main-belt Asteroid          SPK-ID: 2000506
[ 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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 78 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475657831764049 4.567e-08  
a 3.04030153452614 1.2887e-08 au
q 2.591657057491364 1.4013e-07 au
i 17.00405147434712 4.8215e-06 deg
node 312.9323218231311 1.4434e-05 deg
peri 145.983805429691 2.1265e-05 deg
M 4.239499277257399 1.4843e-05 deg
tp 2458577.697341680916
(2019-Apr-04.19734168)		 7.9801e-05 TDB
period 1936.303430668528
5.30		 1.2311e-05
3.371e-08		 d
yr
n .1859212736485761 1.1821e-09 deg/d
Q 3.488946011560916 1.4789e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2135  
   data-arc span      41145 days (112.65 yr)  
   first obs. used      1906-09-17  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43332  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:08:42  

Additional Information
 Earth MOID = 1.62485 au 
 Jupiter MOID = 1.67516 au 
 T_jup = 3.157 
[ 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 8.85   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
diameter diameter 105.94 km 2.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
rotation period rot_per 13.546 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2009) Minor Planet Bull. 36, 109-116.]
[Warner, B.D. (2010) Minor Planet Bull. 37, 127-130.]
[Saylor, D.A.; Leake, M. (2012) J. Southeastern Assoc. for Research in Astron. 5, 25-28.]
[Wang, X.; Muinonen, K.; Wang, Y. (2015) Planet. Space Sci. 118, 242-249.]
geometric albedo albedo 0.0454   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
B-V BV 0.718   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=14.62, mean=15.90, max.=18.33) deg.
U-B UB 0.332   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=14.62, mean=15.90, max.=18.33) deg.
Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

506 Marion (A903 DB)          Discovered 1903-Feb-17 by Dugan, R. S. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A903 DB = 1948 PF1 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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