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6489 Golevka (1991 JX)
Classification: Apollo [NEO, PHA]          SPK-ID: 2006489
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2452219.5 (2001-Nov-06.0) TDB
Reference: JPL 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6040211607213493 2.3476e-09  
a 2.507238138051585 3.3831e-10 au
q .9928132477008321 5.7776e-09 au
i 2.278065197422722 6.2901e-07 deg
node 211.5969086555957 2.0758e-05 deg
peri 65.93934748621344 2.1663e-05 deg
M 213.8412335799196 2.1803e-07 deg
tp 2452808.227297201077
(2003-Jun-17.72729720)
9.9158e-07 JED
period 1450.079473052186
3.97
2.935e-07
8.036e-10
d
yr
n .2482622550626535 5.0248e-11 deg/d
Q 4.021663028402338 5.4266e-10 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -9.409268311566268E-15 1.431E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      1011  
   # delay obs. used      20  
   # Doppler obs. used      20  
   data-arc span      8968 days (24.55 yr)  
   first obs. used      1991-04-15  
   last obs. used      2015-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64102  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 15:53:41  

Additional Information
 Earth MOID = .0288423 au 
 Jupiter MOID = 1.13922 au 
 T_jup = 3.181 
 Nongravitational accels. using nonstandard g(r) = (1 AU/ r)^2 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.2 mag n/a PDS3 (MPC 28115)  
diameter diameter 0.53 km 0.03 Hudson et al., Icarus 148, 2000.  
bulk density density 2.7 g/cm^3 +.4-.6 Chesley et al. 2003, Science 302, 1739-1742. Porosity 19%
rotation period rot_per 6.026 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Mottola, S.; et al. (1997) Astron. J. 114, 1234-1245.]
[Hudson, R.S.; et al. (2000) Icarus 148, 37-51.]
[Kaasalainen, M.; Torppa, J.; Muinonen, K. (2001) Icarus 153, 37-51.]
geometric albedo albedo 0.151   0.023 Hudson et al., Icarus 148, 2000.  
SMASSII spectral type spec_B Q   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

6489 Golevka (1991 JX)          Discovered 1991-May-10 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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