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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2041112058253481 6.776e-08  
a 2.694113537268932 2.3192e-08 au
q 2.144214774546576 1.8359e-07 au
i 13.22839516443113 6.8548e-06 deg
node 50.95431414125204 3.0949e-05 deg
peri 271.4089942224891 3.5356e-05 deg
M 286.496573978094 2.0835e-05 deg
tp 2457730.282305231396
(2016-Dec-07.78230523)
9.4953e-05 JED
period 1615.184982641763
4.42
2.0856e-05
5.71e-08
d
yr
n .2228846874313996 2.878e-09 deg/d
Q 3.244012299991287 2.7925e-08 au
  Orbit Determination Parameters
   # obs. used (total)      933  
   data-arc span      17057 days (46.70 yr)  
   first obs. used      1968-10-23  
   last obs. used      2015-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52732  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:49:02  

Additional Information
 Earth MOID = 1.17974 au 
 Jupiter MOID = 2.23207 au 
 T_jup = 3.303 
[ 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 13.0 mag n/a MPO302174  

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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