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192687 (1999 TC21)
Classification: Main-belt Asteroid          SPK-ID: 2192687
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428785952790836 5.8212e-08  
a 2.764685797718659 2.0736e-08 au
q 2.369671374552585 1.6512e-07 au
i 6.201012314190304 5.887e-06 deg
node 224.3258712778259 4.9719e-05 deg
peri 153.9013849688896 5.2688e-05 deg
M 221.8713653975327 1.9805e-05 deg
tp 2459844.740936308021
(2022-Sep-22.24093631)
9.7001e-05 TDB
period 1679.063416056853
4.60
1.889e-05
5.172e-08
d
yr
n .2144052431595653 2.4121e-09 deg/d
Q 3.159700220884734 2.3698e-08 au
  Orbit Determination Parameters
   # obs. used (total)      375  
   data-arc span      7533 days (20.62 yr)  
   first obs. used      1999-10-02  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53452  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:17:10  

Additional Information
 Earth MOID = 1.37256 au 
 Jupiter MOID = 2.31045 au 
 T_jup = 3.317 
[ 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 15.75   n/a E2021B55  
diameter diameter 3.487 km 0.705 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.092   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

192687 (1999 TC21)          Discovered 1999-Oct-07 by Tucker, R. A. at Goodricke-Pigott
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Alternate Designations
 1999 TC21 = 1999 UN26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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