Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
122554 Josehernandez (2000 QS244)
Classification: Main-belt Asteroid          SPK-ID: 2122554
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1453358806950964 3.9685e-08  
a 2.413498105446156 1.1087e-08 au
q 2.062730232735192 9.5465e-08 au
i 1.455316131662975 5.6247e-06 deg
node 158.2333322168144 0.00017563 deg
peri 287.4472119402751 0.00017692 deg
M 42.12263478549792 2.0413e-05 deg
tp 2459040.255955409936
(2020-Jul-09.75595541)
7.7274e-05 TDB
period 1369.521549309257
3.75
9.4373e-06
2.584e-08
d
yr
n .2628655242274738 1.8114e-09 deg/d
Q 2.76426597815712 1.2699e-08 au
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      7530 days (20.62 yr)  
   first obs. used      2000-07-31  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57626  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:16:18  

Additional Information
 Earth MOID = 1.07919 au 
 Jupiter MOID = 2.43409 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 16.9   n/a MPO493700  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 00:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin