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85853 (1999 AB12)
Classification: Main-belt Asteroid          SPK-ID: 2085853
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09377110520230206 8.1562e-08  
a 2.745584930317591 2.6636e-08 au
q 2.488128396974925 2.2031e-07 au
i 16.25835969355645 8.0618e-06 deg
node 297.2617394954377 2.2756e-05 deg
peri 227.7432706678996 4.302e-05 deg
M 213.022783685296 4.254e-05 deg
tp 2459678.919414232279
(2022-Apr-09.41941423)
0.00020228 TDB
period 1661.692847690619
4.55
2.4181e-05
6.62e-08
d
yr
n .2166465363922818 3.1526e-09 deg/d
Q 3.003041463660256 2.9133e-08 au
  Orbit Determination Parameters
   # obs. used (total)      422  
   data-arc span      7558 days (20.69 yr)  
   first obs. used      1999-01-07  
   last obs. used      2019-09-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62959  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:54:11  

Additional Information
 Earth MOID = 1.52561 au 
 Jupiter MOID = 2.12519 au 
 T_jup = 3.284 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457114.5 (2015-Apr-02.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09224318299005871 8.1752e-08  
q 2.494186577254771 2.2051e-07 au
tp 2456354.418742420710
(2013-Mar-02.91874242)
0.00017942 TDB
node 297.3517087563009 2.2771e-05 deg
peri 227.9234520911478 4.346e-05 deg
i 16.24467512254497 8.0594e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      422  
   data-arc span      7558 days (20.69 yr)  
   first obs. used      1999-01-07  
   last obs. used      2019-09-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62959  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:54:11  

Additional Information
 Jupiter MOID = 2.12519 au 
 T_jup = 3.284 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.683436765840116E-15 -1.792279999235825E-14 -3.402262539679593E-12 -1.401822758289016E-14 -6.460433554372509E-13 9.376657720608301E-15
q -1.792279999235825E-14 4.862686466798226E-14 1.11616432844839E-11 4.403878302192271E-14 2.182645669729036E-12 -2.123385322936938E-14
tp -3.402262539679593E-12 1.11616432844839E-11 3.219186593753041E-8 4.402101285683777E-11 6.689351345158067E-9 1.105455065778374E-11
node -1.401822758289016E-14 4.403878302192271E-14 4.402101285683777E-11 5.18501813967744E-10 -4.871030844688939E-10 7.379866109117618E-11
peri -6.460433554372509E-13 2.182645669729036E-12 6.689351345158067E-9 -4.871030844688939E-10 1.888756785234263E-9 -6.827280073706559E-11
i 9.376657720608301E-15 -2.123385322936938E-14 1.105455065778374E-11 7.379866109117618E-11 -6.827280073706559E-11 6.495401165038375E-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 14.9   n/a MPO395767  
diameter diameter 4.031 km 0.477 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85853 (1999 AB12)          Discovered 1999-Jan-07 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 AB12 = 2004 FW133 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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