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2471 Ultrajectum (6545 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2002471
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08215108805884545 6.1325e-08  
a 3.004029829958237 2.8459e-08 AU
q 2.75724551086594 1.7735e-07 AU
i 10.27945446279439 9.7921e-06 deg
node 16.20214717488551 3.3027e-05 deg
peri 278.1863270713779 7.0112e-05 deg
M 175.6917945950082 6.5438e-05 deg
tp 2455872.380779995406
(2011-Nov-06.88078000)
0.00034129 JED
period 1901.75596971873
5.21
2.7025e-05
7.399e-08
d
yr
n .189298735343654 2.69e-09 deg/d
Q 3.250814149050535 3.0797e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      22187 days (60.74 yr)  
   first obs. used      1953-03-16  
   last obs. used      2013-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47995  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 17:41:35  

Additional Information
 Earth MOID = 1.76559 AU 
 T_jup = 3.222 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.7 mag n/a MPO253378  

2471 Ultrajectum (6545 P-L)          Discovered 1960-Sep-24 by PLS at Palomar (675)
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

[ show close-approach data ]
Alternate Designations
 6545 P-L = 1953 FW = 1976 UV2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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