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21845 (1999 TC113)
Classification: Main-belt Asteroid          SPK-ID: 2021845
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1137714838292426 2.9613e-08  
a 2.435539420189979 1.0196e-08 au
q 2.158444486430352 7.2616e-08 au
i 5.471243470159099 4.0386e-06 deg
node 308.5913269126326 4.3794e-05 deg
peri 318.0318205427408 4.9012e-05 deg
M 297.7032346949094 2.2909e-05 deg
tp 2459440.744894890310
(2021-Aug-14.24489489)
8.8568e-05 TDB
period 1388.325087778583
3.80
8.7178e-06
2.387e-08
d
yr
n .2593052615479456 1.6283e-09 deg/d
Q 2.712634353949607 1.1356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1711  
   data-arc span      10806 days (29.59 yr)  
   first obs. used      1991-08-05  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49699  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:54:12  

Additional Information
 Earth MOID = 1.1443 au 
 Jupiter MOID = 2.38082 au 
 T_jup = 3.490 
[ 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 14.47   n/a E2021B10  
diameter diameter 2.924 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21845 (1999 TC113)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TC113 = 1991 PW27 = 1998 FQ111 = 1999 UM25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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