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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1473000693827223 1.6934e-08  
a 3.038588652625515 1.119e-08 au
q 2.591004333268224 4.854e-08 au
i 17.00628435803337 7.8139e-07 deg
node 312.9347201441313 4.9427e-06 deg
peri 145.7928497908523 7.4418e-06 deg
M 116.0379777089767 9.6275e-06 deg
tp 2458576.903103716786
(2019-Apr-03.40310372)		 4.9485e-05 TDB
period 1934.66731404946
5.30		 1.0687e-05
2.926e-08		 d
yr
n .1860785042398233 1.0279e-09 deg/d
Q 3.486172971982806 1.2838e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2784  
   data-arc span      41805 days (114.46 yr)  
   first obs. used      1906-09-17  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39008  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:59:36  

Additional Information
 Earth MOID = 1.62402 au 
 Jupiter MOID = 1.67718 au 
 T_jup = 3.158 
[ 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 8.89   n/a E2021B10 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. 2020-October); 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

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