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7180 (1991 NG1)
Classification: Main-belt Asteroid          SPK-ID: 2007180
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096617729928944 8.8004e-08  
a 3.013919029004406 3.6118e-08 AU
q 2.68340732462676 2.6754e-07 AU
i 9.045792109674226 8.412e-06 deg
node 307.5668373414681 4.8478e-05 deg
peri 43.00355120999401 6.155e-05 deg
M 144.8437770543277 3.4146e-05 deg
tp 2456231.558787502942
(2012-Oct-31.05878750)
0.00018322 JED
period 1911.15450127424
5.23
3.4354e-05
9.406e-08
d
yr
n .1883678162911341 3.386e-09 deg/d
Q 3.344430733382052 4.0078e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      728  
   data-arc span      11635 days (31.85 yr)  
   first obs. used      1982-12-22  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52307  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:03:42  

Additional Information
 Earth MOID = 1.68512 AU 
 T_jup = 3.221 
[ 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 12.9 mag n/a MPO250280  

7180 (1991 NG1)          Discovered 1991-Jul-12 by Holt, H. E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 NG1 = 1982 YR = 1990 HV2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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