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JPL Small-Body Database Browser
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12532 (1998 KW54)
Classification: Main-belt Asteroid          SPK-ID: 2012532
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2380161329528539 4.3959e-08  
a 3.111997622948564 1.8403e-08 au
q 2.371291982975874 1.363e-07 au
i 16.50453442742756 5.1413e-06 deg
node 187.3702938677237 1.5666e-05 deg
peri 128.0662588280894 1.8107e-05 deg
M 319.2863768260503 1.0749e-05 deg
tp 2459227.274680468043
(2021-Jan-12.77468047)
6.1002e-05 TDB
period 2005.198226148821
5.49
1.7786e-05
4.87e-08
d
yr
n .179533372464335 1.5925e-09 deg/d
Q 3.852703262921255 2.2783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1303  
   data-arc span      21631 days (59.22 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 22:50:16  

Additional Information
 Earth MOID = 1.39801 au 
 Jupiter MOID = 1.79675 au 
 T_jup = 3.112 
[ 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 13.0   n/a MPO435819  
diameter diameter 6.850 km 0.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.968 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.286   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12532 (1998 KW54)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 KW54 = 1993 RT3 = 9101 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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