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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219776752579328 1.7906e-08  
a 3.129859101660756 1.7469e-08 au
q 2.748086164555295 5.8437e-08 au
i 16.89763786584222 6.4085e-07 deg
node 91.50621796872902 4.4041e-06 deg
peri 195.7340361173846 1.318e-05 deg
M 344.4500652073705 9.6797e-06 deg
tp 2459287.859809638642
(2021-Mar-14.35980964)
5.4522e-05 TDB
period 2022.48638912736
5.54
1.6932e-05
4.636e-08
d
yr
n .1779987256949249 1.4902e-09 deg/d
Q 3.511632038766218 1.96e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2114  
   data-arc span      15722 days (43.04 yr)  
   first obs. used      1977-08-21  
   last obs. used      2020-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:55:57  

Additional Information
 Earth MOID = 1.73322 au 
 Jupiter MOID = 1.64559 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 12.41   n/a MPCxxxxx  
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. 2020-October); 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

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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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