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21280 (1996 TL11)
Classification: Main-belt Asteroid          SPK-ID: 2021280
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .139896634723618 4.0605e-08  
a 2.188923200883449 8.1634e-09 au
q 1.882700211411405 9.0814e-08 au
i 4.507574124574131 4.0703e-06 deg
node 32.51877492857701 5.5982e-05 deg
peri 268.2141068592971 5.806e-05 deg
M 236.9975340079129 1.458e-05 deg
tp 2459604.662049516321
(2022-Jan-25.16204952)
4.8289e-05 TDB
period 1182.889600239686
3.24
6.6172e-06
1.812e-08
d
yr
n .3043394750677105 1.7025e-09 deg/d
Q 2.495146190355494 9.3054e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1007  
   data-arc span      9454 days (25.88 yr)  
   first obs. used      1995-03-01  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49897  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:13:21  

Additional Information
 Earth MOID = .871943 au 
 Jupiter MOID = 2.70273 au 
 T_jup = 3.658 
[ 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 15.40   n/a E2021B10  
diameter diameter 2.214 km 0.266 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.207   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21280 (1996 TL11)          Discovered 1996-Oct-11 by Endate, K. at Kitami
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 TL11 = 1999 RY157 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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