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 ]  
91205 (1998 US43)
Classification: TransNeptunian Object          SPK-ID: 2091205
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1313666665690466 0.00014608  
a 39.06387931273978 0.010855 au
q 33.93218770416961 0.0040341 au
i 10.62760404412515 0.00036907 deg
node 223.9378848252502 0.00049812 deg
peri 138.6987285807316 0.062506 deg
M 66.4113691703642 0.07362 deg
tp 2442149.154835302150
(1974-Apr-11.65483530)
11.431 TDB
period 89178.77064239341
244.16
37.172
0.1018
d
yr
n .004036835195268601 1.6827e-06 deg/d
Q 44.19557092130994 0.012281 au
  Orbit Determination Parameters
   # obs. used (total)      25  
   data-arc span      6314 days (17.29 yr)  
   first obs. used      1998-10-22  
   last obs. used      2016-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .24677  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-11 14:18:41  

Additional Information
 Earth MOID = 32.9369 au 
 Jupiter MOID = 29.0325 au 
 T_jup = 5.472 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.0   n/a MPO157287  

91205 (1998 US43)          Discovered 1998-Oct-22 by Buie, M. W. at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin