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 ]  
66837 (1999 US48)
Classification: Main-belt Asteroid          SPK-ID: 2066837
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1702113101998263 8.8908e-08  
a 2.548316697150578 1.3421e-08 au
q 2.114564373324484 2.3284e-07 au
i 12.13235404587613 7.0967e-06 deg
node 269.8931096670894 2.6685e-05 deg
peri 62.64228180691418 3.416e-05 deg
M 99.85839496468324 2.0247e-05 deg
tp 2458788.344967384225
(2019-Oct-31.84496738)
8.1745e-05 TDB
period 1485.862173071728
4.07
1.1738e-05
3.214e-08
d
yr
n .242283575505372 1.914e-09 deg/d
Q 2.982069020976672 1.5705e-08 au
  Orbit Determination Parameters
   # obs. used (total)      774  
   data-arc span      7910 days (21.66 yr)  
   first obs. used      1999-07-22  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51398  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:31  

Additional Information
 Earth MOID = 1.1319 au 
 Jupiter MOID = 2.40872 au 
 T_jup = 3.390 
[ 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 15.07   n/a MPCxxxxx  

66837 (1999 US48)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 US48 = 2001 BQ55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-16 12:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin