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22857 Hyde (1999 RJ143)
Classification: Main-belt Asteroid          SPK-ID: 2022857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1257616858895981 3.2803e-08  
a 2.252275129700253 5.8714e-09 au
q 1.969025212301936 7.4285e-08 au
i 6.088077827105753 3.9e-06 deg
node 174.0551989738365 2.8718e-05 deg
peri 316.9463870053476 3.164e-05 deg
M 345.042027971787 1.2762e-05 deg
tp 2459251.798043880443
(2021-Feb-06.29804388)
4.3779e-05 TDB
period 1234.612269773414
3.38
4.8277e-06
1.322e-08
d
yr
n .291589520705209 1.1402e-09 deg/d
Q 2.53552504709857 6.6098e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1406  
   data-arc span      11481 days (31.43 yr)  
   first obs. used      1989-10-07  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49739  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:13:55  

Additional Information
 Earth MOID = .98797 au 
 Jupiter MOID = 2.50308 au 
 T_jup = 3.608 
[ 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 15.3   n/a MPO309332  

22857 Hyde           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Tammi Hyde mentored a finalist in the 2006 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. She teaches at the Seabrook Intermediate School, Seabrook, Texas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061009/MPCPages.arcLast Updated: 2006-10-14

[ show close-approach data ]
Alternate Designations
 1999 RJ143 = 1989 TV4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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