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17857 Hsieh (1998 KR1)
Classification: Main-belt Asteroid          SPK-ID: 2017857
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2025349399276993 7.1326e-08  
a 2.698181783095011 2.8066e-08 AU
q 2.151705697741851 1.9133e-07 AU
i 13.22245367610276 8.503e-06 deg
node 51.11565282549606 3.2975e-05 deg
peri 270.951203803918 3.9422e-05 deg
M 153.2522992584044 2.2763e-05 deg
tp 2456111.356389619848
(2012-Jul-02.85638962)
0.00010183 JED
period 1618.844878265337
4.43
2.5258e-05
6.915e-08
d
yr
n .2223807881986542 3.4697e-09 deg/d
Q 3.244657868448172 3.375e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      13789 days (37.75 yr)  
   first obs. used      1976-05-27  
   last obs. used      2014-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53487  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:09:30  

Additional Information
 Earth MOID = 1.18782 AU 
 T_jup = 3.301 
[ 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 12.9 mag n/a MPO250389  

17857 Hsieh           Discovered 1998 May 18 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Henry H. Hsieh (b. 1978) has studied the nature of the comet-like Themis-family minor planet (7968) = 133P/Elst-Pizarro and has surveyed the main belt for examples of similar transition objects.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

Alternate Designations
 1998 KR1 = 1968 UW2 = 1999 SF4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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