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JPL Small-Body Database Browser
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19501 (1998 KC50)
Classification: Main-belt Asteroid          SPK-ID: 2019501
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 .121617567713742 5.0053e-08  
a 3.128555849585972 2.4645e-08 au
q 2.748068496702726 1.5839e-07 au
i 16.89916960051241 5.4886e-06 deg
node 91.50459090627473 1.9189e-05 deg
peri 195.802606402423 3.4825e-05 deg
M 308.7606104453782 3.3628e-05 deg
tp 2459288.184021813615
(2021-Mar-14.68402181)
0.00018998 TDB
period 2021.223296239677
5.53
2.3883e-05
6.539e-08
d
yr
n .1781099597801742 2.1046e-09 deg/d
Q 3.509043202469218 2.7642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1668  
   data-arc span      15506 days (42.45 yr)  
   first obs. used      1977-08-21  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48265  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:49:30  

Additional Information
 Earth MOID = 1.73513 au 
 Jupiter MOID = 1.64898 au 
 T_jup = 3.136 
[ 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 12.4   n/a MPO474022  
diameter diameter 14.706 km 0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.13015 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.068   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19501 (1998 KC50)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 KC50 = 1987 LD = 1999 SA6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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