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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05955599553762839 2.9869e-08  
a 2.288958221015227 7.0287e-09 au
q 2.152637035418627 6.8115e-08 au
i 7.953090615913937 3.4583e-06 deg
node 62.8559132824732 2.3014e-05 deg
peri 55.97977959898768 3.6795e-05 deg
M 175.8429010009704 2.9349e-05 deg
tp 2458778.657804866223
(2019-Oct-22.15780487)
0.00010243 TDB
period 1264.897183690869
3.46
5.8262e-06
1.595e-08
d
yr
n .284608112534134 1.3109e-09 deg/d
Q 2.425279406611828 7.4473e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      8263 days (22.62 yr)  
   first obs. used      1998-12-21  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:52  

Additional Information
 Earth MOID = 1.18037 au 
 Jupiter MOID = 2.62858 au 
 T_jup = 3.585 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.56   n/a MPO637240  
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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