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4711 Kathy (1989 KD)
Classification: Main-belt Asteroid          SPK-ID: 2004711
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2561336674517341 4.4193e-08  
a 2.382619511620933 8.0141e-09 au
q 1.772350437967404 1.0399e-07 au
i 10.2348065130508 3.7981e-06 deg
node 113.791580845083 2.4834e-05 deg
peri 243.0602554202828 2.5721e-05 deg
M 74.59115145789005 6.4856e-06 deg
tp 2458722.166629714434
(2019-Aug-26.66662971)
2.4291e-05 TDB
period 1343.323052994709
3.68
6.7775e-06
1.856e-08
d
yr
n .2679921253472435 1.3521e-09 deg/d
Q 2.992888585274462 1.0067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      18720 days (51.25 yr)  
   first obs. used      1969-01-15  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44358  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:11:35  

Additional Information
 Earth MOID = .794113 au 
 Jupiter MOID = 2.50308 au 
 T_jup = 3.471 
[ 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 12.6   n/a MPO502198  
diameter diameter 8.156 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.164 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.350   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B S   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)

4711 Kathy (1989 KD)          Discovered 1989-May-31 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1989 KD = 1969 AO = 1975 YB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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