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JPL Small-Body Database Browser
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172217 (2002 RK44)
Classification: Main-belt Asteroid          SPK-ID: 2172217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2590848246806565 4.4283e-08  
a 2.678686969367798 1.9211e-08 au
q 1.984679825534783 1.205e-07 au
i 3.251980994452489 5.9783e-06 deg
node 91.87928621191574 0.00011167 deg
peri 301.0509925999933 0.00011265 deg
M 347.3246537683349 1.7787e-05 deg
tp 2459056.881769886670
(2020-Jul-26.38176989)
7.9528e-05 TDB
period 1601.331970600917
4.38
1.7227e-05
4.716e-08
d
yr
n .2248128474353173 2.4185e-09 deg/d
Q 3.372694113200813 2.4188e-08 au
  Orbit Determination Parameters
   # obs. used (total)      345  
   data-arc span      10415 days (28.51 yr)  
   first obs. used      1989-10-07  
   last obs. used      2018-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60224  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:55:33  

Additional Information
 Earth MOID = .993338 au 
 Jupiter MOID = 2.07018 au 
 T_jup = 3.326 
[ 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 16.3   n/a MPO439989  

172217 (2002 RK44)          Discovered 2002-Sep-05 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2002 RK44 = 1989 TT6 = 1998 WW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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