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 ]  
185535 Gangda (2007 WH56)
Classification: Main-belt Asteroid          SPK-ID: 2185535
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2515528944269253 5.7646e-08  
a 2.571101754139765 1.6173e-08 au
q 1.924333666019762 1.5546e-07 au
i 6.463318043681102 3.0322e-06 deg
node 117.1662545335426 4.5464e-05 deg
peri 243.6875110277353 4.6318e-05 deg
M 56.95270939999696 6.2719e-06 deg
tp 2458762.273970410681
(2019-Oct-05.77397041)
2.7021e-05 TDB
period 1505.834780393425
4.12
1.4209e-05
3.89e-08
d
yr
n .2390700524966914 2.2558e-09 deg/d
Q 3.217869842259768 2.0242e-08 au
  Orbit Determination Parameters
   # obs. used (total)      901  
   data-arc span      10201 days (27.93 yr)  
   first obs. used      1992-02-01  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52108  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 22:35:14  

Additional Information
 Earth MOID = .93131 au 
 Jupiter MOID = 2.25769 au 
 T_jup = 3.376 
[ 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 15.6   n/a MPO494025  
diameter diameter 4.545 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.059   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

185535 Gangda           Discovered 2007 Nov. 28 by the PMO NEO Survey Program at the XuYi Station of the Purple Mountain Observatory.
GangDa, the Chinese abbreviation for the University of Hong Kong (Xiang Gang Da Xue), is the first and foremost tertiary institution in Hong Kong. Founded in 1911, it is a focal point of intellectual and academic endeavors in Asia and a gateway and forum for scholarship with the rest of the world.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100130/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 2007 WH56 = 1994 NP5 = 2003 YU61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-20 14:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin