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 ]  
154912 (2004 SQ4)
Classification: Main-belt Asteroid          SPK-ID: 2154912
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442086016589569 4.4521e-08  
a 2.732083250781636 2.0673e-08 au
q 2.338093345570559 1.2153e-07 au
i 8.1829106897515 5.7847e-06 deg
node 189.5601099173145 3.0979e-05 deg
peri 110.9333018950326 3.6138e-05 deg
M 237.7247639525417 1.9207e-05 deg
tp 2459560.741568505243
(2021-Dec-12.24156851)
9.0049e-05 TDB
period 1649.450626156284
4.52
1.8721e-05
5.126e-08
d
yr
n .2182544868523335 2.4772e-09 deg/d
Q 3.126073155992713 2.3654e-08 au
  Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      8847 days (24.22 yr)  
   first obs. used      1995-11-14  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52499  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:35:09  

Additional Information
 Earth MOID = 1.33833 au 
 Jupiter MOID = 2.14756 au 
 T_jup = 3.324 
[ 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 15.7   n/a MPO276399  

154912 (2004 SQ4)          Discovered 2004-Sep-17 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2004 SQ4 = 1995 VP4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-28 10:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin