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85855 (1999 AN15)
Classification: Main-belt Asteroid          SPK-ID: 2085855
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08696912950573576 3.9543e-08  
a 2.348144577915213 9.4819e-09 au
q 2.143928488020314 9.3664e-08 au
i 1.781106373549573 3.7093e-06 deg
node 315.0203025662524 0.00015211 deg
peri 218.0413457561411 0.00015404 deg
M 291.626982660459 2.5898e-05 deg
tp 2459250.113415122947
(2021-Feb-04.61341512)
9.5122e-05 TDB
period 1314.273275347955
3.60
7.9607e-06
2.18e-08
d
yr
n .2739156359279158 1.6591e-09 deg/d
Q 2.552360667810113 1.0307e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1105  
   data-arc span      7981 days (21.85 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .544  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:35  

Additional Information
 Earth MOID = 1.14926 au 
 Jupiter MOID = 2.41459 au 
 T_jup = 3.554 
[ 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 15.4   n/a MPO502667  
diameter diameter 2.047 km 0.580 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.384   0.251 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85855 (1999 AN15)          Discovered 1999-Jan-09 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 AN15 = 2001 TO100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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