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122554 Josehernandez (2000 QS244)
Classification: Main-belt Asteroid          SPK-ID: 2122554
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1453674009475493 3.8108e-08  
a 2.413172668682463 1.0653e-08 au
q 2.062376029798432 9.083e-08 au
i 1.455487988716644 5.5982e-06 deg
node 158.2344011110744 0.00016481 deg
peri 287.38678935266 0.00016617 deg
M 93.70179344287496 2.0493e-05 deg
tp 2459040.109247759681
(2020-Jul-09.60924776)
7.7122e-05 TDB
period 1369.244558640522
3.75
9.0671e-06
2.482e-08
d
yr
n .2629187004821346 1.741e-09 deg/d
Q 2.763969307566494 1.2202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      7552 days (20.68 yr)  
   first obs. used      2000-07-31  
   last obs. used      2021-04-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57101  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:50:24  

Additional Information
 Earth MOID = 1.07915 au 
 Jupiter MOID = 2.4349 au 
 T_jup = 3.503 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.01   n/a MPCxxxxx  

122554 Joséhernández           Discovered 2000 Aug. 25 by M. W. Buie at Cerro Tololo.
José M. Hernández (b. 1962) was born into a migrant farming family. He became an American astronaut and was a mission specialist on the Space Shuttle Discovery to the International Space Station in 2008. Prior to his time as an astronaut, Hernández helped to develop the first full-field digital mammography imaging system.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2021-01-27Last Updated: 2021-02-23

Alternate Designations
 2000 QS244 = 2002 AO50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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