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21869 (1999 TE296)
Classification: Main-belt Asteroid          SPK-ID: 2021869
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 .04831755057923416 4.0394e-08  
a 2.71726045821296 1.189e-08 au
q 2.585969088586302 1.1e-07 au
i 6.43701414333625 4.4629e-06 deg
node 79.35172260919741 3.3038e-05 deg
peri 167.8594182334635 5.2823e-05 deg
M 46.93427788687595 3.995e-05 deg
tp 2458987.203872893153
(2020-May-17.70387289)
0.00018168 TDB
period 1636.045321577997
4.48
1.0738e-05
2.94e-08
d
yr
n .2200428039809882 1.4443e-09 deg/d
Q 2.848551827839617 1.2465e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1326  
   data-arc span      15593 days (42.69 yr)  
   first obs. used      1977-12-07  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49611  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:54:26  

Additional Information
 Earth MOID = 1.5707 au 
 Jupiter MOID = 2.15439 au 
 T_jup = 3.349 
[ 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 14.23   n/a E2021B10  
diameter diameter 7.028 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21869 (1999 TE296)          Discovered 1999-Oct-01 by CSS at Catalina
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TE296 = 1977 XE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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