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 ]  
154923 (2004 SK39)
Classification: Main-belt Asteroid          SPK-ID: 2154923
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .328669728853364 3.2999e-08  
a 3.071603009785862 2.7534e-08 au
q 2.062060081414366 1.0452e-07 au
i 1.983696613721538 4.2612e-06 deg
node 135.4788419011332 0.00017943 deg
peri 197.4441935080462 0.00017969 deg
M 353.6154039812428 1.3854e-05 deg
tp 2459035.372009600339
(2020-Jul-04.87200960)
7.6033e-05 TDB
period 1966.283131969515
5.38
2.6439e-05
7.239e-08
d
yr
n .1830865525655038 2.4618e-09 deg/d
Q 4.081145938157357 3.6584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7111 days (19.47 yr)  
   first obs. used      1999-12-07  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:35:27  

Additional Information
 Earth MOID = 1.05193 au 
 Jupiter MOID = 1.30853 au 
 T_jup = 3.144 
[ 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 15.5   n/a MPO439923  

154923 (2004 SK39)          Discovered 2004-Sep-17 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2004 SK39 = 1999 XL61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-09 12:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin