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 ]  
22132 Merkley (2000 UD21)
Classification: Main-belt Asteroid          SPK-ID: 2022132
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07839781003488491 3.0222e-08  
a 2.942064507454907 1.3637e-08 au
q 2.71141309308908 9.4059e-08 au
i 2.657483910749358 3.604e-06 deg
node 148.3494248032398 7.5314e-05 deg
peri 289.4237221435378 7.9969e-05 deg
M 321.2262532000052 2.5906e-05 deg
tp 2459399.023526961261
(2021-Jul-03.52352696)
0.00013275 TDB
period 1843.218043247339
5.05
1.2816e-05
3.509e-08
d
yr
n .1953105880874302 1.358e-09 deg/d
Q 3.172715921820735 1.4706e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1471  
   data-arc span      10597 days (29.01 yr)  
   first obs. used      1992-03-02  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53473  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:01:25  

Additional Information
 Earth MOID = 1.72788 au 
 Jupiter MOID = 2.01031 au 
 T_jup = 3.266 
[ 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 14.50   n/a E2021B10  
diameter diameter 3.504 km 0.744 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.228   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22132 Merkley           Discovered 2000 Oct. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Clark Merkley mentored a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the Springville Junior High School, Springville, Utah.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2000 UD21 = 1997 CR5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-22 01:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin