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22131 (2000 UK4)
Classification: Main-belt Asteroid          SPK-ID: 2022131
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1751260620090202 3.2331e-08  
a 2.258156536753967 7.5833e-09 au
q 1.862694475072317 7.577e-08 au
i 2.588501844229746 4.0883e-06 deg
node 154.3974754199434 6.7631e-05 deg
peri 226.5326471075176 6.8618e-05 deg
M 350.3439144153717 1.0905e-05 deg
tp 2459233.745134840061
(2021-Jan-19.24513484)
3.756e-05 TDB
period 1239.451373698933
3.39
6.2435e-06
1.709e-08
d
yr
n .2904510879887452 1.4631e-09 deg/d
Q 2.653618598435616 8.9114e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1371  
   data-arc span      9474 days (25.94 yr)  
   first obs. used      1995-03-02  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49885  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:01:25  

Additional Information
 Earth MOID = .865026 au 
 Jupiter MOID = 2.80508 au 
 T_jup = 3.600 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.73   n/a E2021B10  
diameter diameter 4.705 km 0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 22.86 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.056   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22131 (2000 UK4)          Discovered 2000-Oct-24 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 UK4 = 1999 JM13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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