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 ]  
66186 (1998 XS49)
Classification: Main-belt Asteroid          SPK-ID: 2066186
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .181617432587085 7.491e-08  
a 2.57225076111268 1.8701e-08 au
q 2.10508518190922 1.9765e-07 au
i 12.59871644872869 6.1326e-06 deg
node 335.8704019547524 1.4741e-05 deg
peri 12.73832756818284 1.7956e-05 deg
M 154.3971576661864 8.5922e-06 deg
tp 2458354.243113818953
(2018-Aug-23.74311382)
3.7757e-05 TDB
period 1506.844313340159
4.13
1.6433e-05
4.499e-08
d
yr
n .2389098839295501 2.6054e-09 deg/d
Q 3.039416340316141 2.2097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1336  
   data-arc span      11089 days (30.36 yr)  
   first obs. used      1989-08-28  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 10:46:44  

Additional Information
 Earth MOID = 1.09968 au 
 Jupiter MOID = 2.38217 au 
 T_jup = 3.372 
[ 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 14.2   n/a MPO359203  
diameter diameter 3.984 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.255   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

66186 (1998 XS49)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XS49 = 1989 QY = 1989 RS4 
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-21 03:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin