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 ]  
85655 (1998 QS18)
Classification: Main-belt Asteroid          SPK-ID: 2085655
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2092018830068917 4.2421e-08  
a 2.186518364496229 9.364e-09 au
q 1.729094605414469 9.6169e-08 au
i 3.770790652084465 3.5543e-06 deg
node 290.5872953259644 7.0754e-05 deg
peri 33.73972737449469 7.1373e-05 deg
M 28.54348722094985 1.4043e-05 deg
tp 2459302.866199605391
(2021-Mar-29.36619961)
4.5632e-05 TDB
period 1180.940782782801
3.23
7.5862e-06
2.077e-08
d
yr
n .3048417035371462 1.9583e-09 deg/d
Q 2.643942123577989 1.1323e-08 au
  Orbit Determination Parameters
   # obs. used (total)      765  
   data-arc span      8045 days (22.03 yr)  
   first obs. used      1998-06-28  
   last obs. used      2020-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57264  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:14:11  

Additional Information
 Earth MOID = .717674 au 
 Jupiter MOID = 2.68282 au 
 T_jup = 3.645 
[ 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 15.83   n/a E2021B10  

85655 (1998 QS18)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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-Aug-01 12:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin