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85851 (1999 AS4)
Classification: Main-belt Asteroid          SPK-ID: 2085851
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1107603323151301 3.7159e-08  
a 2.453791223350483 1.1943e-08 au
q 2.182008492020234 8.8097e-08 au
i 12.63836374349682 4.0755e-06 deg
node 112.4322446280808 1.8927e-05 deg
peri 25.63842758417604 3.1795e-05 deg
M 192.6699298045786 2.856e-05 deg
tp 2459653.068839978807
(2022-Mar-14.56883998)
0.00011424 TDB
period 1403.960340887963
3.84
1.025e-05
2.806e-08
d
yr
n .2564174994945448 1.8721e-09 deg/d
Q 2.725573954680732 1.3266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      7551 days (20.67 yr)  
   first obs. used      1998-12-21  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52435  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:59  

Additional Information
 Earth MOID = 1.20271 au 
 Jupiter MOID = 2.3376 au 
 T_jup = 3.452 
[ 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 14.5   n/a MPO493477  
diameter diameter 6.808 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85851 (1999 AS4)          Discovered 1999-Jan-11 by Kobayashi, T. at Oizumi
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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