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91258 (1999 CE84)
Classification: Main-belt Asteroid          SPK-ID: 2091258
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06002563111992201 3.004e-08  
a 2.288161468374957 7.5525e-09 au
q 2.150813132131463 6.8673e-08 au
i 7.954988858414403 3.7196e-06 deg
node 62.86620749633819 2.3819e-05 deg
peri 55.84169711076864 3.9346e-05 deg
M 63.20460068795474 3.1129e-05 deg
tp 2458778.540049133924
(2019-Oct-22.04004913)
0.00010923 TDB
period 1264.236803049929
3.46
6.2593e-06
1.714e-08
d
yr
n .2847567790555629 1.4098e-09 deg/d
Q 2.425509804618451 8.0059e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1274  
   data-arc span      7799 days (21.35 yr)  
   first obs. used      1998-12-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51129  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:38:42  

Additional Information
 Earth MOID = 1.17818 au 
 Jupiter MOID = 2.63061 au 
 T_jup = 3.585 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456990.5 (2014-Nov-29.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05958722835781487 3.0072e-08  
q 2.152319848976781 6.8722e-08 au
tp 2457515.633474446722
(2016-May-07.13347445)
0.0001097 TDB
node 62.90110648663023 2.3833e-05 deg
peri 56.2698356490412 3.9509e-05 deg
i 7.95250317250602 3.718e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1274  
   data-arc span      7799 days (21.35 yr)  
   first obs. used      1998-12-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51129  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:38:42  

Additional Information
 Jupiter MOID = 2.63061 au 
 T_jup = 3.585 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.043546807448793E-16 -2.05563983778412E-15 -1.721762037155387E-13 5.460996890456071E-16 -3.625986266239256E-14 -1.373342896061435E-16
q -2.05563983778412E-15 4.722705631819025E-15 4.036504196704426E-13 -1.387099110749656E-15 7.941911014624724E-14 3.890372504251973E-16
tp -1.721762037155387E-13 4.036504196704426E-13 1.203403848364767E-8 -7.568061927293548E-12 3.463772456064213E-9 1.96518567914949E-12
node 5.460996890456071E-16 -1.387099110749656E-15 -7.568061927293548E-12 5.680273960527975E-10 -5.64423911722887E-10 -5.936663720780209E-12
peri -3.625986266239256E-14 7.941911014624724E-14 3.463772456064213E-9 -5.64423911722887E-10 1.560990820277482E-9 6.427076082452738E-12
i -1.373342896061435E-16 3.890372504251973E-16 1.96518567914949E-12 -5.936663720780209E-12 6.427076082452738E-12 1.382369913051377E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO302517  
diameter diameter 1.889 km 0.350 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.376   0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91258 (1999 CE84)          Discovered 1999-Feb-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 CE84 = 2001 TR76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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