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19361 (1997 KH4)
Classification: Main-belt Asteroid          SPK-ID: 2019361
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07900369912158908 1.5482e-08  
a 2.260513759654015 6.9963e-09 au
q 2.081924810726097 3.6555e-08 au
i 6.325298167403044 2.7831e-07 deg
node 103.3532075845477 9.2795e-06 deg
peri 72.39659562283774 1.437e-05 deg
M 32.82684784713102 1.2934e-05 deg
tp 2459087.302759282439
(2020-Aug-25.80275928)
4.4419e-05 TDB
period 1241.392620092317
3.40
5.7632e-06
1.578e-08
d
yr
n .2899968907284373 1.3463e-09 deg/d
Q 2.439102708581932 7.549e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2228  
   data-arc span      25266 days (69.17 yr)  
   first obs. used      1951-11-08  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46968  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:52:38  

Additional Information
 Earth MOID = 1.0966 au 
 Jupiter MOID = 2.53715 au 
 T_jup = 3.608 
[ 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 14.13   n/a E2021B10  
diameter diameter 3.912 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 47.7617 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 0.241   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19361 (1997 KH4)          Discovered 1997-May-31 by Spacewatch at Kitt Peak
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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