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55751 (1991 NM4)
Classification: Main-belt Asteroid          SPK-ID: 2055751
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185983299302531 7.715e-08  
a 2.744735748156764 2.4486e-08 au
q 2.234260738000969 2.1418e-07 au
i 8.962264586560051 6.234e-06 deg
node 277.0633194746137 4.1218e-05 deg
peri 45.09707535136589 4.4497e-05 deg
M 162.7537753419221 1.5282e-05 deg
tp 2456849.607432321360
(2014-Jul-11.10743232)
7.1469e-05 JED
period 1660.921989652188
4.55
2.2226e-05
6.085e-08
d
yr
n .2167470851989787 2.9005e-09 deg/d
Q 3.25521075831256 2.904e-08 au
  Orbit Determination Parameters
   # obs. used (total)      807  
   data-arc span      8968 days (24.55 yr)  
   first obs. used      1991-07-08  
   last obs. used      2016-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56235  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 23:36:16  

Additional Information
 Earth MOID = 1.23104 au 
 Jupiter MOID = 2.07148 au 
 T_jup = 3.306 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO324805  

55751 (1991 NM4)          Discovered 1991-Jul-08 by Debehogne, H. at La Silla
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 NM4 = 2001 XQ106 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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