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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08720906466468874 4.0053e-08  
a 2.34756053600238 9.6631e-09 au
q 2.142831977413877 9.4594e-08 au
i 1.781110991198412 3.8463e-06 deg
node 315.0291278424564 0.00015268 deg
peri 218.1504558666035 0.00015461 deg
M 181.9314663729922 2.5663e-05 deg
tp 2459250.342795759585
(2021-Feb-04.84279576)
9.5084e-05 TDB
period 1313.782967200041
3.60
8.1118e-06
2.221e-08
d
yr
n .2740178621490571 1.6919e-09 deg/d
Q 2.552289094590883 1.0506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      7651 days (20.95 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55416  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:19:38  

Additional Information
 Earth MOID = 1.14859 au 
 Jupiter MOID = 2.41599 au 
 T_jup = 3.554 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456500.5 (2013-Jul-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08660832202491077 4.0172e-08  
q 2.144578997053097 9.4813e-08 au
tp 2456622.253200800949
(2013-Nov-25.75320080)
9.0727e-05 TDB
node 315.1206139092293 0.00015262 deg
peri 218.0672694682449 0.00015457 deg
i 1.781463065404715 3.847e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      7651 days (20.95 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55416  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:19:38  

Additional Information
 Jupiter MOID = 2.41599 au 
 T_jup = 3.554 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.613799790631652E-15 -3.792145482161742E-15 7.630207298149135E-13 -1.389653209389587E-14 2.408741017925551E-13 -2.215440048924225E-17
q -3.792145482161742E-15 8.98958755582082E-15 -1.613262432304814E-12 3.274317194047019E-14 -5.205244387532364E-13 8.420979662208992E-17
tp 7.630207298149135E-13 -1.613262432304814E-12 8.23145808811289E-9 -5.466658636547111E-12 2.246407308204335E-9 2.098871805136561E-13
node -1.389653209389587E-14 3.274317194047019E-14 -5.466658636547111E-12 2.329138532493624E-8 -2.328132203184622E-8 7.454180578422895E-11
peri 2.408741017925551E-13 -5.205244387532364E-13 2.246407308204335E-9 -2.328132203184622E-8 2.389092880731516E-8 -7.446137813759141E-11
i -2.215440048924225E-17 8.420979662208992E-17 2.098871805136561E-13 7.454180578422895E-11 -7.446137813759141E-11 1.47995847481804E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO453289  
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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