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4431 Holeungholee (1978 WU14)
Classification: Main-belt Asteroid          SPK-ID: 2004431
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1003662609154382 2.4083e-08  
a 3.060483383468968 1.4208e-08 au
q 2.753314109676359 7.817e-08 au
i 10.88176379845422 5.2443e-07 deg
node 222.9337653445633 2.8003e-06 deg
peri 222.1384485949173 8.7957e-06 deg
M 289.3341948545815 7.0489e-06 deg
tp 2459584.375395135947
(2022-Jan-04.87539514)
3.8897e-05 TDB
period 1955.615477168317
5.35
1.3618e-05
3.728e-08
d
yr
n .1840852683991185 1.2819e-09 deg/d
Q 3.367652657261578 1.5634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2704  
   data-arc span      21256 days (58.20 yr)  
   first obs. used      1962-12-03  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41507  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:20:17  

Additional Information
 Earth MOID = 1.7793 au 
 Jupiter MOID = 1.96789 au 
 T_jup = 3.199 
[ 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 11.78   n/a E2021B10  
diameter diameter 23.856 km 0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.81 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:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.078   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4431 Holeungholee           Discovered 1978 Nov. 28 at the Purple Mountain Observatory.
S. H. Ho, K.-K. Leung, T. Ho and Q.-W. Lee jointly established the Holeungholee Foundation in 1994 to reward high-level Chinese achievements in science and technology and to promote the further development of those achievements.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1978 WU14 = 1962 XO1 = 1962 YC = 1972 RM1 = 1988 RM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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