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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1399447148881624 3.803e-08  
a 2.188586805168592 7.3562e-09 au
q 1.882305648711279 8.6336e-08 au
i 4.507893177939107 3.9179e-06 deg
node 32.51694052698755 4.3812e-05 deg
peri 268.2793414327693 4.6091e-05 deg
M 296.5928054450712 1.4398e-05 deg
tp 2459604.795615904383
(2022-Jan-25.29561590)
4.76e-05 TDB
period 1182.616929386744
3.24
5.9624e-06
1.632e-08
d
yr
n .3044096452996669 1.5348e-09 deg/d
Q 2.494867961625905 8.3856e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1247  
   data-arc span      9614 days (26.32 yr)  
   first obs. used      1995-03-01  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47786  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:32:21  

Additional Information
 Earth MOID = .873047 au 
 Jupiter MOID = 2.70217 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 15.41   n/a MPCxxxxx  
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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