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102216 (1999 TG4)
Classification: Main-belt Asteroid          SPK-ID: 2102216
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2394677463592529 4.9705e-08  
a 3.129614522736883 2.3537e-08 au
q 2.380172786003893 1.6143e-07 au
i 8.758523770644917 5.074e-06 deg
node 315.92653636862 3.1067e-05 deg
peri 60.2643976467641 3.2268e-05 deg
M 230.3220754270795 9.7053e-06 deg
tp 2459728.947487951880
(2022-May-29.44748795)
5.9072e-05 TDB
period 2022.249326755792
5.54
2.2813e-05
6.246e-08
d
yr
n .1780195919647221 2.0083e-09 deg/d
Q 3.879056259469873 2.9173e-08 au
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      8466 days (23.18 yr)  
   first obs. used      1997-04-10  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55307  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:56:04  

Additional Information
 Earth MOID = 1.39562 au 
 Jupiter MOID = 1.72434 au 
 T_jup = 3.151 
[ 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 14.58   n/a E2021B55  
diameter diameter 7.649 km 0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102216 (1999 TG4)          Discovered 1999-Oct-03 by McCormack, B. D., Carona, D. W. at Nacogdoches
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 TG4 = 2000 SR320 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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