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120255 (2004 GG17)
Classification: Main-belt Asteroid          SPK-ID: 2120255
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956421894113677 4.1047e-08  
a 2.307632029155551 1.1834e-08 au
q 1.856161846615762 9.4454e-08 au
i 23.37070165542181 6.9589e-06 deg
node 88.72506263034008 1.0791e-05 deg
peri 223.0329374239336 2.4192e-05 deg
M 146.8226355046808 2.4737e-05 deg
tp 2458478.297701703522
(2018-Dec-25.79770170)
8.6844e-05 TDB
period 1280.407661533488
3.51
9.8495e-06
2.697e-08
d
yr
n .2811604544515486 2.1628e-09 deg/d
Q 2.75910221169534 1.415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      896  
   data-arc span      7793 days (21.34 yr)  
   first obs. used      1998-12-16  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48888  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:58:26  

Additional Information
 Earth MOID = .88447 au 
 Jupiter MOID = 2.5277 au 
 T_jup = 3.454 
[ 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 15.1   n/a MPO502800  
diameter diameter 2.583 km 0.460 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.318   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120255 (2004 GG17)          Discovered 2004-Apr-10 by NEAT at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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