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129764 (1999 GK25)
Classification: Main-belt Asteroid          SPK-ID: 2129764
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1958916974824553 3.433e-08  
a 2.363107266652837 1.2554e-08 au
q 1.900194172855087 8.0357e-08 au
i 5.132557284219315 4.8583e-06 deg
node 148.2981875062368 4.4561e-05 deg
peri 99.59897569046558 4.6536e-05 deg
M 254.8984276427072 1.4821e-05 deg
tp 2459387.873843686929
(2021-Jun-22.37384369)
5.64e-05 TDB
period 1326.855351442494
3.63
1.0574e-05
2.895e-08
d
yr
n .2713181957691357 2.1621e-09 deg/d
Q 2.826020360450586 1.5014e-08 au
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      8594 days (23.53 yr)  
   first obs. used      1996-07-21  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55589  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:05:48  

Additional Information
 Earth MOID = .894742 au 
 Jupiter MOID = 2.22119 au 
 T_jup = 3.518 
[ 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 15.8   n/a MPO351770  
diameter diameter 4.102 km 0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.881270 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.064   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129764 (1999 GK25)          Discovered 1999-Apr-06 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 GK25 = 2000 SL83 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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