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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 2451986.5 (2001-Mar-18.0) TDB
Reference: JPL 95 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6009767835157114 2.4437e-09  
a 2.512320953350836 1.6158e-10 AU
q 1.002474387646925 6.1022e-09 AU
i 2.287528857325901 6.4012e-07 deg
node 212.1865625269534 2.0618e-05 deg
peri 65.22830030999425 2.1544e-05 deg
M 156.4488038691053 2.7089e-07 deg
tp 2451354.407184728043
(1999-Jun-24.90718473)
1.0515e-06 JED
period 1454.491232085671
3.98
1.4032e-07
3.842e-10
d
yr
n .2475092266343725 2.3878e-11 deg/d
Q 4.022167519054747 2.5869e-10 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -9.363450106223852E-15 1.433E-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)      989  
   # delay obs. used      20  
   # Doppler obs. used      20  
   data-arc span      7503 days (20.54 yr)  
   first obs. used      1991-04-15  
   last obs. used      2011-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64461  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:23:13  

Additional Information
 Earth MOID = .0303004 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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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 (675)
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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