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21170 (1994 AL10)
Classification: Main-belt Asteroid          SPK-ID: 2021170
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .142612874439794 3.6302e-08  
a 2.259011478695209 6.535e-09 au
q 1.936847358325996 8.3039e-08 au
i 5.588638392296511 3.8555e-06 deg
node 97.31328403103609 3.9311e-05 deg
peri 101.5794275038155 4.1812e-05 deg
M 274.9298273372019 1.5819e-05 deg
tp 2459493.556188547055
(2021-Oct-06.05618855)		 5.5088e-05 TDB
period 1240.155327944645
3.40		 5.3814e-06
1.473e-08		 d
yr
n .2902862180954713 1.2596e-09 deg/d
Q 2.581175599064423 7.467e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      9871 days (27.03 yr)  
   first obs. used      1994-01-08  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55606  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:51:12  

Additional Information
 Earth MOID = .942807 au 
 Jupiter MOID = 2.38778 au 
 T_jup = 3.602 
[ 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 MPO492973  

21170 (1994 AL10)          Discovered 1994-Jan-08 by Spacewatch at Kitt Peak
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 AL10 = 1999 TA240 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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