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129898 Sanfordselznick (1999 TP39)
Classification: Inner Main-belt Asteroid          SPK-ID: 2129898
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05880946215777336 4.0906e-08  
a 1.913318191808523 7.577e-09 au
q 1.80079697801158 7.8705e-08 au
i 21.34849920895988 6.4562e-06 deg
node 183.4575268034008 1.2593e-05 deg
peri 89.50950674427796 5.5974e-05 deg
M 37.72048049870249 5.4941e-05 deg
tp 2458899.212945059513
(2020-Feb-19.71294506)
0.00014739 TDB
period 966.6721976097222
2.65
5.7422e-06
1.572e-08
d
yr
n .372411662288589 2.2122e-09 deg/d
Q 2.025839405605466 8.0226e-09 au
  Orbit Determination Parameters
   # obs. used (total)      558  
   data-arc span      7605 days (20.82 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:42:23  

Additional Information
 Earth MOID = .878753 au 
 Jupiter MOID = 3.02633 au 
 T_jup = 3.847 
[ 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 16.4   n/a MPO371988  

129898 Sanfordselznick           Discovered 1999 Oct. 3 by the Catalina Sky Survey.
Sanford Selznick (b. 1969) was the telemetry lead for the OSIRIS-REx Mission Science Processing Operations Center. He also designed the commanding and telemetry interface used for the Mars Odyssey mission, the Mars Phoenix mission, and contributed to OSIRIS-REx OCAMS camera hardware development.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-08-18Last Updated: 2016-08-22

Alternate Designations
 1999 TP39 = 2001 HD20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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