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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1861919032335472 7.9739e-08  
a 2.744361352912143 2.6678e-08 au
q 2.233383489452838 2.2339e-07 au
i 8.96354179205378 6.242e-06 deg
node 277.0666287380293 4.4728e-05 deg
peri 45.09823956041647 4.838e-05 deg
M 119.3799269699219 1.6117e-05 deg
tp 2456849.832840193421
(2014-Jul-11.33284019)
7.6208e-05 JED
period 1660.58216454024
4.55
2.4214e-05
6.629e-08
d
yr
n .2167914407894849 3.1611e-09 deg/d
Q 3.255339216371447 3.1645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      791  
   data-arc span      8930 days (24.45 yr)  
   first obs. used      1991-07-08  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .552  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 15:17:54  

Additional Information
 Earth MOID = 1.22877 au 
 Jupiter MOID = 2.07033 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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