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JPL Small-Body Database Browser
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344322 (2001 US222)
Classification: Main-belt Asteroid          SPK-ID: 2344322
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1533282969849481 5.6043e-08  
a 3.054680804760908 4.2306e-08 au
q 2.586311799134307 1.7145e-07 au
i 5.019093883403338 9.4953e-06 deg
node 41.68788080228796 7.021e-05 deg
peri 275.9886712495714 7.742e-05 deg
M 166.339432277497 3.6815e-05 deg
tp 2457699.468664657689
(2016-Nov-06.96866466)
0.0001927 TDB
period 1950.056437502427
5.34
4.0512e-05
1.109e-07
d
yr
n .1846100415745285 3.8352e-09 deg/d
Q 3.523049810387509 4.8793e-08 au
  Orbit Determination Parameters
   # obs. used (total)      205  
   data-arc span      6304 days (17.26 yr)  
   first obs. used      2001-10-23  
   last obs. used      2019-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53743  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 15:43:56  

Additional Information
 Earth MOID = 1.57849 au 
 Jupiter MOID = 1.8015 au 
 T_jup = 3.212 
[ 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 15.9   n/a MPO434165  
diameter diameter 3.417 km 0.517 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

344322 (2001 US222)          Discovered 2001-Oct-23 by Spacewatch at Kitt Peak
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

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