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 ]  
39621 (1994 PU4)
Classification: Main-belt Asteroid          SPK-ID: 2039621
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07047429637707453 4.9389e-08  
a 2.997500272766985 2.2638e-08 au
q 2.786253550153643 1.5526e-07 au
i 2.345439976363549 7.3182e-06 deg
node 138.3260638389311 0.00013313 deg
peri 105.0001930584157 0.00014882 deg
M 352.1794878043807 7.0358e-05 deg
tp 2458641.678447664358
(2019-Jun-07.17844766)
0.00037061 TDB
period 1895.558857062154
5.19
2.1474e-05
5.879e-08
d
yr
n .1899176059127748 2.1515e-09 deg/d
Q 3.208746995380328 2.4233e-08 au
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      9033 days (24.73 yr)  
   first obs. used      1994-08-10  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61533  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:09:55  

Additional Information
 Earth MOID = 1.77417 au 
 Jupiter MOID = 1.79296 au 
 T_jup = 3.249 
[ 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 14.9   n/a MPO299238  

39621 (1994 PU4)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 PU4 = 1998 HO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 05:33 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin