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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2562313132569559 1.7033e-08  
a 2.382726948877572 7.2962e-09 au
q 1.772197693633932 3.9842e-08 au
i 10.23465478883388 3.3327e-07 deg
node 113.7912061288424 4.6957e-06 deg
peri 243.073973738882 6.7579e-06 deg
M 128.1595674558588 3.5132e-06 deg
tp 2458722.246260795305
(2019-Aug-26.74626080)
1.2176e-05 TDB
period 1343.413913853839
3.68
6.1705e-06
1.689e-08
d
yr
n .2679739998875487 1.2308e-09 deg/d
Q 2.993256204121212 9.1657e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2843  
   data-arc span      19061 days (52.19 yr)  
   first obs. used      1969-01-15  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43231  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:48:05  

Additional Information
 Earth MOID = .792317 au 
 Jupiter MOID = 2.50351 au 
 T_jup = 3.471 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.65   n/a MPCxxxxx  
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. 2020-October); 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

Alternate Designations
 1989 KD = 1969 AO = 1975 YB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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