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168531 Joshuakammer (1999 VF12)
Classification: Inner Main-belt Asteroid          SPK-ID: 2168531
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08259324915620299 1.1357e-07  
a 1.928319248499597 9.7242e-09 au
q 1.769053096355568 2.2312e-07 au
i 23.52078694679905 1.1234e-05 deg
node 40.37218362127869 1.1947e-05 deg
peri 125.9278891146351 6.4231e-05 deg
M 128.9393791160648 5.7587e-05 deg
tp 2458650.192121080285
(2019-Jun-15.69212108)
0.00015696 TDB
period 978.0630035264758
2.68
7.3983e-06
2.026e-08
d
yr
n .3680744478648046 2.7842e-09 deg/d
Q 2.087585400643627 1.0527e-08 au
  Orbit Determination Parameters
   # obs. used (total)      317  
   data-arc span      7643 days (20.93 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67879  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:28:31  

Additional Information
 Earth MOID = .807541 au 
 Jupiter MOID = 2.92439 au 
 T_jup = 3.811 
[ 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 17.0   n/a MPO469796  

168531 Joshuakammer           Discovered 1999 Nov. 10 by M. W. Buie at Kitt Peak.
Joshua A. Kammer (b. 1986) is a research scientist at the Southwest Research Institute, who served as a postdoctoral science team member for the atmospheric investigation for the New Horizons Mission to Pluto.
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 2018-09-25Last Updated: 2018-10-01

[ show close-approach data ]
Alternate Designations
 1999 VF12 = 1998 HC7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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