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91215 (1999 AN)
Classification: Main-belt Asteroid          SPK-ID: 2091215
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1502857159441488 3.7409e-08  
a 2.374609031407234 7.6636e-09 au
q 2.017739213034756 8.9976e-08 au
i 2.328493612696573 4.0006e-06 deg
node 17.06091852511562 9.3097e-05 deg
peri 158.9078130963393 9.3982e-05 deg
M 358.1465600648283 1.2981e-05 deg
tp 2459403.381175197024
(2021-Jul-07.88117520)
4.8205e-05 TDB
period 1336.554276143407
3.66
6.4703e-06
1.771e-08
d
yr
n .269349330906913 1.3039e-09 deg/d
Q 2.731478849779712 8.8154e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1115  
   data-arc span      8158 days (22.34 yr)  
   first obs. used      1998-12-17  
   last obs. used      2021-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:00  

Additional Information
 Earth MOID = 1.02305 au 
 Jupiter MOID = 2.22836 au 
 T_jup = 3.526 
[ 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 15.7   n/a MPO453351  
diameter diameter 2.096 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91215 (1999 AN)          Discovered 1999-Jan-05 by Sarounova, L., Vasta, L. at Ondrejov
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 AN = 2001 TP3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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