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
JPL Small-Body Database Browser
Search: [ help ]  
481817 (2008 UL90)
Classification: Atira [NEO, PHA]          SPK-ID: 2481817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 60 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3798106210628257 3.9246e-08  
a .6950679795627914 5.0172e-09 au
q .4310737785641642 2.8164e-08 au
i 24.30851170135803 3.825e-06 deg
node 81.13823116269462 3.6023e-06 deg
peri 183.6531501122594 3.2059e-05 deg
M 114.4749724159951 6.2453e-05 deg
tp 2459329.194989483159
(2021-Apr-24.69498948)
3.6447e-05 TDB
period 211.6602718890661
0.58
2.2917e-06
6.274e-09
d
yr
n 1.700838786546966 1.8416e-08 deg/d
Q .9590621805614186 6.9228e-09 au
  Orbit Determination Parameters
   # obs. used (total)      291  
   # delay obs. used      4  
   # Doppler obs. used      3  
   data-arc span      4496 days (12.31 yr)  
   first obs. used      2008-10-26  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41077  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 17:01:46  

Additional Information
 Earth MOID = .0261722 au 
 Jupiter MOID = 4.1102 au 
 T_jup = 8.102 
[ 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 18.61   n/a MPCxxxxx  

481817 (2008 UL90)          Discovered 2008-Oct-26 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2017-01-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-31 02:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin