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20370 (1998 KR29)
Classification: Main-belt Asteroid          SPK-ID: 2020370
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07839379358207733 2.5702e-08  
a 2.760488323981576 1.1363e-08 au
q 2.544083172125629 7.0982e-08 au
i 6.491778545418168 2.9477e-07 deg
node 131.96242295422 2.1253e-06 deg
peri 270.8016194938197 1.0347e-05 deg
M 167.5685735657936 1.2109e-05 deg
tp 2458420.728477356929
(2018-Oct-29.22847736)
5.4167e-05 TDB
period 1675.24102030555
4.59
1.0344e-05
2.832e-08
d
yr
n .2148944513872631 1.3269e-09 deg/d
Q 2.976893475837522 1.2254e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2720  
   data-arc span      26063 days (71.36 yr)  
   first obs. used      1949-10-28  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42761  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:18:31  

Additional Information
 Earth MOID = 1.56187 au 
 Jupiter MOID = 2.32571 au 
 T_jup = 3.328 
[ 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 12.90   n/a E2021B10  
diameter diameter 7.657 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 54.0671 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.251   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

20370 (1998 KR29)          Discovered 1998-May-22 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 KR29 = 1949 US 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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