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JPL Small-Body Database Browser
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17477 (1991 GN9)
Classification: Main-belt Asteroid          SPK-ID: 2017477
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1513566675652885 3.0181e-08  
a 2.320750775742612 7.8683e-09 au
q 1.969489672076652 7.0533e-08 au
i 1.825542822643419 3.5792e-06 deg
node 88.30463945936336 0.00012228 deg
peri 24.93993577404596 0.00012309 deg
M 160.1540647976657 1.3852e-05 deg
tp 2458426.017705491028
(2018-Nov-03.51770549)
4.9023e-05 TDB
period 1291.34172326199
3.54
6.5672e-06
1.798e-08
d
yr
n .2787798098017178 1.4178e-09 deg/d
Q 2.672011879408572 9.0592e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1413  
   data-arc span      10255 days (28.08 yr)  
   first obs. used      1991-04-10  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:31:09  

Additional Information
 Earth MOID = .986198 au 
 Jupiter MOID = 2.42227 au 
 T_jup = 3.562 
[ 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 15.4   n/a MPO319304  

17477 (1991 GN9)          Discovered 1991-Apr-10 by Elst, E. W. at La Silla
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 GN9 = 1991 HP = 1996 TU40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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