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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .147347233331944 3.6325e-08  
a 3.039092645741673 1.1573e-08 au
q 2.59129075255218 1.0836e-07 au
i 17.00620783730274 4.4168e-06 deg
node 312.9343032823858 1.3485e-05 deg
peri 145.862214374714 2.0324e-05 deg
M 78.74650797042624 1.4881e-05 deg
tp 2458577.204999075733
(2019-Apr-03.70499908)
7.9328e-05 TDB
period 1935.148672115922
5.30
1.1054e-05
3.026e-08
d
yr
n .1860322181894016 1.0627e-09 deg/d
Q 3.486894538931166 1.3279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2710  
   data-arc span      41596 days (113.88 yr)  
   first obs. used      1906-09-17  
   last obs. used      2020-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:17:17  

Additional Information
 Earth MOID = 1.62437 au 
 Jupiter MOID = 1.67641 au 
 T_jup = 3.158 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455852.5 (2011-Oct-18.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1478781009930422 3.6478e-08  
q 2.589254215494551 1.0891e-07 au
tp 2456647.002218529142
(2013-Dec-20.50221853)
7.6542e-05 TDB
node 312.9890963320894 1.35e-05 deg
peri 146.9076280418077 2.0242e-05 deg
i 16.99747583583133 4.4143e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2710  
   data-arc span      41596 days (113.88 yr)  
   first obs. used      1906-09-17  
   last obs. used      2020-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:17:17  

Additional Information
 Jupiter MOID = 1.67641 au 
 T_jup = 3.158 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.330630006190862E-15 -3.957455492182953E-15 3.504747782536945E-13 -2.25001707534036E-15 8.326740971603015E-14 -3.026350877510727E-15
q -3.957455492182953E-15 1.186033259895647E-14 -1.011440549034122E-12 6.170721671769753E-15 -2.517888203890669E-13 9.528380729344953E-15
tp 3.504747782536945E-13 -1.011440549034122E-12 5.858741118748752E-9 4.896362784829149E-12 1.169068209321707E-9 4.155089418940441E-12
node -2.25001707534036E-15 6.170721671769753E-15 4.896362784829149E-12 1.822480749262736E-10 -1.729198810787775E-10 5.58042643447272E-12
peri 8.326740971603015E-14 -2.517888203890669E-13 1.169068209321707E-9 -1.729198810787775E-10 4.09727460577918E-10 -4.612247193828741E-12
i -3.026350877510727E-15 9.528380729344953E-15 4.155089418940441E-12 5.58042643447272E-12 -4.612247193828741E-12 1.948606573417349E-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 8.9   n/a MPO502157 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-August); 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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