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19502 (1998 KB51)
Classification: Main-belt Asteroid          SPK-ID: 2019502
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .10848204898107 4.2347e-08  
a 2.517172065879907 7.5067e-09 au
q 2.244104082535342 1.0766e-07 au
i 8.492771275244429 3.2083e-06 deg
node 178.6714528046908 2.4751e-05 deg
peri 62.37111843843353 2.7602e-05 deg
M 235.4181358175902 1.2562e-05 deg
tp 2459705.300883794827
(2022-May-05.80088379)
5.1485e-05 TDB
period 1458.706043281352
3.99
6.5252e-06
1.787e-08
d
yr
n .2467940690710939 1.104e-09 deg/d
Q 2.790240049224473 8.321e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2582  
   data-arc span      14126 days (38.67 yr)  
   first obs. used      1982-05-23  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45881  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:43:13  

Additional Information
 Earth MOID = 1.24607 au 
 Jupiter MOID = 2.22715 au 
 T_jup = 3.435 
[ 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 13.39   n/a E2021B10  
diameter diameter 5.005 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.303   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19502 (1998 KB51)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1998-Oct-21 03:38 < 00:01 Hebe 0.0259019426763934 0.0259006116315264 0.0259032737356277 6.34720662074443 6.34720658293131 2451107.651317114 0.295154703670042 77.9164338766599 44.2891896047595 39.5719459429547 67626.9542683743 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 02:43:18 2021-Feb-24 02:43

Alternate Designations
 1998 KB51 = 1982 KD3 = 1995 UG26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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