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 ]  
20162 (1996 UD)
Classification: Main-belt Asteroid          SPK-ID: 2020162
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1705919614619996 3.5796e-08  
a 2.328515513035346 7.5154e-09 au
q 1.931289484371952 8.4001e-08 au
i 6.435799365226628 4.3977e-06 deg
node 46.93223708582649 3.8322e-05 deg
peri 7.241467277651608 4.0712e-05 deg
M 108.2350164868081 1.4748e-05 deg
tp 2458210.304355633631
(2018-Apr-01.80435563)
5.2441e-05 TDB
period 1297.82797223497
3.55
6.2832e-06
1.72e-08
d
yr
n .2773865317296632 1.3429e-09 deg/d
Q 2.72574154169874 8.7975e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1777  
   data-arc span      13270 days (36.33 yr)  
   first obs. used      1983-01-09  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .549  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:49:53  

Additional Information
 Earth MOID = .942298 au 
 Jupiter MOID = 2.63271 au 
 T_jup = 3.545 
[ 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 14.4   n/a MPO474031  
diameter diameter 3.990 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.68 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.232   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20162 (1996 UD)          Discovered 1996-Oct-16 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 UD = 1983 AF3 = 1989 WG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-23 02:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin