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 ]  
46956 (1998 SQ123)
Classification: Main-belt Asteroid          SPK-ID: 2046956
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2332526793635816 4.2386e-08  
a 2.623975084692209 1.0687e-08 au
q 2.01192586560447 1.1379e-07 au
i 3.282785305337251 4.7581e-06 deg
node 186.1342310830223 6.2626e-05 deg
peri 192.3851424676017 6.3385e-05 deg
M 300.7750096483049 7.8262e-06 deg
tp 2458855.911522104297
(2020-Jan-07.41152210)
3.388e-05 TDB
period 1552.522801802623
4.25
9.4849e-06
2.597e-08
d
yr
n .2318806523047563 1.4166e-09 deg/d
Q 3.236024303779948 1.318e-08 au
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      7714 days (21.12 yr)  
   first obs. used      1998-09-18  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55695  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:29:45  

Additional Information
 Earth MOID = 1.01335 au 
 Jupiter MOID = 2.22217 au 
 T_jup = 3.362 
[ 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 15.6   n/a MPO412498  

46956 (1998 SQ123)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ 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
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin