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217642 (1997 UD22)
Classification: Main-belt Asteroid          SPK-ID: 2217642
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2071043790223885 1.0073e-07  
a 2.55757272164191 2.7752e-08 AU
q 2.027888211321662 2.6244e-07 AU
i 8.586013813204675 1.0314e-05 deg
node 124.3117107052332 6.5883e-05 deg
peri 260.0779091396822 7.3986e-05 deg
M 77.30044802163329 3.4188e-05 deg
tp 2456679.710662988756
(2014-Jan-22.21066299)
0.00013804 JED
period 1493.964967599264
4.09
2.4317e-05
6.658e-08
d
yr
n .2409695058502639 3.9222e-09 deg/d
Q 3.087257231962158 3.35e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      183  
   data-arc span      6294 days (17.23 yr)  
   first obs. used      1997-10-31  
   last obs. used      2015-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59535  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 19:32:39  

Additional Information
 Earth MOID = 1.05202 AU 
 T_jup = 3.391 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5 mag n/a MPO321068  

217642 (1997 UD22)          Discovered 1997-Oct-31 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20090904/Numbers.arcLast Updated: 2009-09-08

Alternate Designations
 1997 UD22 = 2001 TS202 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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