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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
173129 (1994 JH2)
Classification: Main-belt Asteroid          SPK-ID: 2173129
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .225957381802474 4.4159e-08  
a 2.459640543433999 1.5612e-08 au
q 1.903866606064439 1.0401e-07 au
i 16.14533876577442 5.8098e-06 deg
node 51.02475586792198 1.5129e-05 deg
peri 266.3389651676701 2.1446e-05 deg
M 107.2112539121299 1.8322e-05 deg
tp 2458180.891993625363
(2018-Mar-03.39199363)
6.9246e-05 TDB
period 1408.983448870741
3.86
1.3415e-05
3.673e-08
d
yr
n .2555033561881294 2.4327e-09 deg/d
Q 3.01541448080356 1.914e-08 au
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      9049 days (24.77 yr)  
   first obs. used      1994-05-01  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54745  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:22:14  

Additional Information
 Earth MOID = .970378 au 
 Jupiter MOID = 2.4652 au 
 T_jup = 3.402 
[ 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 15.5   n/a MPO266538  
diameter diameter 4.936 km 0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

173129 (1994 JH2)          Discovered 1994-May-01 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1994 JH2 = 2003 YY10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-15 23:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin