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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
21551 Geyang (1998 QH45)
Classification: Main-belt Asteroid          SPK-ID: 2021551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04376217421405203 3.508e-08  
a 3.094151658000333 1.7105e-08 au
q 2.958744854098224 1.1625e-07 au
i 9.154232974910538 4.8145e-06 deg
node 197.8900311011496 2.023e-05 deg
peri 285.2207156508206 5.5871e-05 deg
M 294.9149037422635 5.3055e-05 deg
tp 2459755.909764939802
(2022-Jun-25.40976494)
0.00029345 TDB
period 1987.97455666279
5.44
1.6485e-05
4.513e-08
d
yr
n .1810888367728063 1.5017e-09 deg/d
Q 3.229558461902441 1.7854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      22033 days (60.32 yr)  
   first obs. used      1960-10-17  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48659  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:00:43  

Additional Information
 Earth MOID = 1.99093 au 
 Jupiter MOID = 1.81591 au 
 T_jup = 3.203 
[ 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 13.71   n/a E2021B10  

21551 Geyang           Discovered 1998 Aug. 17 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Ge Yang (b. 1987) was awarded second place in the 2005 Intel International Science and Engineering Fair for his engineering project. He attends the Beijing Jingshan School, Beijing, China.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

[ show close-approach data ]
Alternate Designations
 1998 QH45 = 2000 AD169 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-21 06:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin