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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516737598843326 2.9871e-08  
a 2.319107078585517 7.7888e-09 au
q 1.967359388402081 6.9764e-08 au
i 1.824686756128203 3.5243e-06 deg
node 88.27828044762779 0.00011887 deg
peri 25.42527321328334 0.00011962 deg
M 270.0342712200135 1.3568e-05 deg
tp 2459718.869711602605
(2022-May-19.36971160)
4.9123e-05 TDB
period 1289.970055828133
3.53
6.4986e-06
1.779e-08
d
yr
n .2790762455093486 1.4059e-09 deg/d
Q 2.670854768768952 8.9702e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1449  
   data-arc span      11075 days (30.32 yr)  
   first obs. used      1991-04-10  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50446  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:57:40  

Additional Information
 Earth MOID = .984429 au 
 Jupiter MOID = 2.42141 au 
 T_jup = 3.563 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456502.5 (2013-Jul-29.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1517869075477502 2.9883e-08  
q 1.967557542297103 6.9814e-08 au
tp 2457136.060711133213
(2015-Apr-23.56071113)
4.6099e-05 TDB
node 88.31785911200116 0.00011862 deg
peri 24.82728067916064 0.00011937 deg
i 1.826145488920434 3.5287e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1449  
   data-arc span      11075 days (30.32 yr)  
   first obs. used      1991-04-10  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50446  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:57:40  

Additional Information
 Jupiter MOID = 2.42141 au 
 T_jup = 3.563 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.930110698372622E-16 -2.077175039509172E-15 6.227529995836796E-14 -3.024144161447118E-15 2.951511975409891E-14 -2.638166129766342E-16
q -2.077175039509172E-15 4.873927506491093E-15 -1.160120125890198E-13 7.13745062169412E-15 -6.749710594001063E-14 6.4270219233673E-16
tp 6.227529995836796E-14 -1.160120125890198E-13 2.125155714830754E-9 6.27395346863477E-12 6.262353753354781E-10 -4.421355706238096E-13
node -3.024144161447118E-15 7.13745062169412E-15 6.27395346863477E-12 1.407149466073639E-8 -1.40621127635027E-8 -1.44753167583769E-11
peri 2.951511975409891E-14 -6.749710594001063E-14 6.262353753354781E-10 -1.40621127635027E-8 1.424939238492755E-8 1.43290758491257E-11
i -2.638166129766342E-16 6.4270219233673E-16 -4.421355706238096E-13 -1.44753167583769E-11 1.43290758491257E-11 1.245182248896221E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.41   n/a E2021B10  

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

Alternate Designations
 1991 GN9 = 1991 HP = 1996 TU40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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