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21800 (1999 TM1)
Classification: Main-belt Asteroid          SPK-ID: 2021800
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05679057683173469 4.2405e-08  
a 2.225877733508302 7.229e-09 au
q 2.099468853065451 9.5468e-08 au
i 8.414505080119371 5.188e-06 deg
node 20.71348734594251 2.7856e-05 deg
peri 47.4898100589963 5.3377e-05 deg
M 94.38454087030314 4.3466e-05 deg
tp 2458882.484160730799
(2020-Feb-02.98416073)
0.00014671 TDB
period 1212.970906901277
3.32
5.9091e-06
1.618e-08
d
yr
n .2967919493796236 1.4458e-09 deg/d
Q 2.352286613951152 7.6396e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1482  
   data-arc span      11424 days (31.28 yr)  
   first obs. used      1989-10-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50899  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:54:28  

Additional Information
 Earth MOID = 1.11968 au 
 Jupiter MOID = 2.7827 au 
 T_jup = 3.630 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.72   n/a E2021B10  
diameter diameter 3.078 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.295   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21800 (1999 TM1)          Discovered 1999-Oct-01 by Korlevic, K. at Visnjan
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TM1 = 1989 TQ17 = 1998 KX24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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