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22351 (1992 UT2)
Classification: Main-belt Asteroid          SPK-ID: 2022351
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2102304150400258 2.8568e-08  
a 2.276686043608158 6.0124e-09 au
q 1.79805739174458 6.5547e-08 au
i 6.9235785549019 3.8733e-06 deg
node 71.28657906840546 2.7322e-05 deg
peri 260.5679582963386 2.882e-05 deg
M 105.0950013655365 9.6912e-06 deg
tp 2458834.203554638145
(2019-Dec-16.70355464)
3.334e-05 TDB
period 1254.73827124865
3.44
4.9704e-06
1.361e-08
d
yr
n .2869124248850295 1.1365e-09 deg/d
Q 2.755314695471735 7.2764e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1757  
   data-arc span      15562 days (42.61 yr)  
   first obs. used      1978-08-01  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48524  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:04:49  

Additional Information
 Earth MOID = .801523 au 
 Jupiter MOID = 2.62915 au 
 T_jup = 3.569 
[ 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 14.4   n/a MPO435908  
diameter diameter 3.934 km 1.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
rotation period rot_per 3.646 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.188   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

22351 (1992 UT2)          Discovered 1992-Oct-19 by Endate, K., Watanabe, K. at Kitami
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1992 UT2 = 1978 PG5 = 1998 FE78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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