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85891 (1999 CH45)
Classification: Main-belt Asteroid          SPK-ID: 2085891
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1363775767815949 4.0126e-08  
a 2.666734823485478 1.5892e-08 au
q 2.303051990339434 1.0623e-07 au
i 12.7205912388613 3.7797e-06 deg
node 135.73013275442 2.527e-05 deg
peri 33.11699937006743 3.1716e-05 deg
M 305.0639435720084 2.0562e-05 deg
tp 2459243.229831743851
(2021-Jan-28.72983174)
9.1854e-05 TDB
period 1590.626359253234
4.35
1.4219e-05
3.893e-08
d
yr
n .2263259362613685 2.0231e-09 deg/d
Q 3.030417656631521 1.8059e-08 au
  Orbit Determination Parameters
   # obs. used (total)      603  
   data-arc span      7685 days (21.04 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56654  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:40:40  

Additional Information
 Earth MOID = 1.3217 au 
 Jupiter MOID = 1.98158 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457316.5 (2015-Oct-21.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1366815055296775 4.036e-08  
q 2.301272928411788 1.0686e-07 au
tp 2457655.137576403857
(2016-Sep-23.63757640)
8.5426e-05 TDB
node 135.7777322849136 2.5258e-05 deg
peri 33.57320879154603 3.16e-05 deg
i 12.72523604288476 3.7814e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      603  
   data-arc span      7685 days (21.04 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56654  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:40:40  

Additional Information
 Jupiter MOID = 1.98158 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.628952638558269E-15 -4.278146884540696E-15 1.240861196197915E-12 -1.419756029160343E-14 3.214843183924979E-13 1.198760831788264E-15
q -4.278146884540696E-15 1.141968152087898E-14 -2.925807900250122E-12 3.483253714837401E-14 -7.813806424242683E-13 -2.530023328338944E-15
tp 1.240861196197915E-12 -2.925807900250122E-12 7.297546859909156E-9 -2.558787196939359E-11 1.665135257845416E-9 1.200288582643251E-12
node -1.419756029160343E-14 3.483253714837401E-14 -2.558787196939359E-11 6.379478117521315E-10 -6.280825208313963E-10 6.992915616113609E-12
peri 3.214843183924979E-13 -7.813806424242683E-13 1.665135257845416E-9 -6.280825208313963E-10 9.985420308860255E-10 -6.51063825390321E-12
i 1.198760831788264E-15 -2.530023328338944E-15 1.200288582643251E-12 6.992915616113609E-12 -6.51063825390321E-12 1.429893605712336E-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 MPO229505  
diameter diameter 6.201 km 0.514 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85891 (1999 CH45)          Discovered 1999-Feb-10 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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