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120250 (2004 GU4)
Classification: Main-belt Asteroid          SPK-ID: 2120250
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336533320475274 3.1618e-08  
a 2.287681441935617 9.7623e-09 au
q 1.981925194557629 7.3356e-08 au
i 6.439793152800863 3.8342e-06 deg
node 69.00403989681597 3.2452e-05 deg
peri 251.76476700 3.5791e-05 deg
M 198.6467772520884 1.6115e-05 deg
tp 2459766.956929463559
(2022-Jul-06.45692946)
5.8208e-05 TDB
period 1263.838993321383
3.46
8.0899e-06
2.215e-08
d
yr
n .2848464099480869 1.8233e-09 deg/d
Q 2.593437689313604 1.1067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      709  
   data-arc span      8212 days (22.48 yr)  
   first obs. used      1998-09-20  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:05:36  

Additional Information
 Earth MOID = .978329 au 
 Jupiter MOID = 2.68339 au 
 T_jup = 3.580 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457599.5 (2016-Jul-30.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1344039480640724 3.1614e-08  
q 1.979677789989997 7.338e-08 au
tp 2457239.242420640941
(2015-Aug-04.74242064)
5.2102e-05 TDB
node 69.02505607524581 3.2467e-05 deg
peri 251.68334589531 3.5768e-05 deg
i 6.439538424740566 3.8337e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      709  
   data-arc span      8212 days (22.48 yr)  
   first obs. used      1998-09-20  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:05:36  

Additional Information
 Jupiter MOID = 2.68339 au 
 T_jup = 3.580 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.994448132862202E-16 -2.304570771903339E-15 6.995837629019555E-14 8.548318530586408E-15 2.542632952158238E-15 -1.564009845192876E-15
q -2.304570771903339E-15 5.384629997072034E-15 -6.33827609864047E-14 -2.056900858458016E-14 2.583053011854195E-14 3.787605366465435E-15
tp 6.995837629019555E-14 -6.33827609864047E-14 2.714654679927632E-9 -4.392519799729805E-12 7.924064466925054E-10 6.811646509491456E-14
node 8.548318530586408E-15 -2.056900858458016E-14 -4.392519799729805E-12 1.054104050571911E-9 -1.048583173773291E-9 -8.571723100560223E-12
peri 2.542632952158238E-15 2.583053011854195E-14 7.924064466925054E-10 -1.048583173773291E-9 1.279335253526433E-9 8.602922028095441E-12
i -1.564009845192876E-15 3.787605366465435E-15 6.811646509491456E-14 -8.571723100560223E-12 8.602922028095441E-12 1.469715869110087E-11

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 16.2   n/a MPO449699  

120250 (2004 GU4)          Discovered 2004-Apr-11 by NEAT at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2004 GU4 = 1998 SL66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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