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2799 Justus (3071 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2002799
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .126726714351405 3.3941e-08  
a 2.388570147900624 7.5819e-09 au
q 2.085874501059328 8.0172e-08 au
i 5.301405401438457 3.3637e-06 deg
node 283.0472496113603 3.9425e-05 deg
peri 20.05076783204659 4.2072e-05 deg
M 111.7906298771348 1.3298e-05 deg
tp 2458581.794824018710
(2019-Apr-08.29482402)
4.9832e-05 TDB
period 1348.358655094177
3.69
6.42e-06
1.758e-08
d
yr
n .2669912776099291 1.2712e-09 deg/d
Q 2.691265794741919 8.5427e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1770  
   data-arc span      21680 days (59.36 yr)  
   first obs. used      1960-09-25  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52118  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:31:29  

Additional Information
 Earth MOID = 1.07133 au 
 Jupiter MOID = 2.50779 au 
 T_jup = 3.517 
[ 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 14.2   n/a MPO439091  
diameter diameter 3.267 km 0.867 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.416   0.306 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2799 Justus (3071 P-L)          Discovered 1960-Sep-25 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 3071 P-L = 1981 ET4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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