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215012 (2008 EG103)
Classification: Main-belt Asteroid          SPK-ID: 2215012
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08589466145618087 4.7878e-08  
a 3.180309328943263 3.9961e-08 au
q 2.907137735807747 1.5954e-07 au
i 6.616337744160742 4.9622e-06 deg
node 93.70631524688795 4.8069e-05 deg
peri 281.1333470835464 5.6257e-05 deg
M 202.0481069302158 2.9837e-05 deg
tp 2459909.418213502406
(2022-Nov-25.91821350)
0.00017558 TDB
period 2071.583635381327
5.67
3.9044e-05
1.069e-07
d
yr
n .1737800945380286 3.2753e-09 deg/d
Q 3.453480922078778 4.3393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      6647 days (18.20 yr)  
   first obs. used      2002-02-12  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 09:14:15  

Additional Information
 Earth MOID = 1.91788 au 
 Jupiter MOID = 2.01935 au 
 T_jup = 3.184 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457286.5 (2015-Sep-21.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08546306540603159 4.7836e-08  
q 2.909938604407833 1.5955e-07 au
tp 2457842.027739421781
(2017-Mar-29.52773942)
0.00017039 TDB
node 93.72024544481864 4.8061e-05 deg
peri 282.0432619726377 5.6347e-05 deg
i 6.616024512538561 4.9618e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      6647 days (18.20 yr)  
   first obs. used      2002-02-12  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 09:14:15  

Additional Information
 Jupiter MOID = 2.01935 au 
 T_jup = 3.184 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.288280848933731E-15 -7.429411224950938E-15 -5.362758231613242E-13 7.424850769499582E-15 -8.79381815856488E-14 -1.856526044147685E-16
q -7.429411224950938E-15 2.545575808075648E-14 2.007596742581893E-12 -2.2073222128393E-14 2.640434435566721E-13 1.892214108564962E-15
tp -5.362758231613242E-13 2.007596742581893E-12 2.903191184470969E-8 -8.45186577989875E-12 5.051795814882494E-9 4.136299324667559E-12
node 7.424850769499582E-15 -2.2073222128393E-14 -8.45186577989875E-12 2.309882812509814E-9 -2.295683982127499E-9 6.514066951406805E-12
peri -8.79381815856488E-14 2.640434435566721E-13 5.051795814882494E-9 -2.295683982127499E-9 3.174959229294768E-9 -5.811361652410222E-12
i -1.856526044147685E-16 1.892214108564962E-15 4.136299324667559E-12 6.514066951406805E-12 -5.811361652410222E-12 2.461941704382877E-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 15.2   n/a MPO437029  
diameter diameter 4.887 km 0.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215012 (2008 EG103)          Discovered 2008-Mar-05 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2008 EG103 = 2002 CE302 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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