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 ]  
49445 (1998 YS8)
Classification: Main-belt Asteroid          SPK-ID: 2049445
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08461990392252498 4.4802e-08  
a 2.6423762660221 1.2583e-08 au
q 2.418778640264149 1.2022e-07 au
i 14.38362079248961 5.2448e-06 deg
node 158.3804642680915 1.7156e-05 deg
peri 247.5505665953903 3.2903e-05 deg
M 281.0857746544598 2.8352e-05 deg
tp 2458944.408740417274
(2020-Apr-04.90874042)
0.0001239 TDB
period 1568.882492454393
4.30
1.1207e-05
3.068e-08
d
yr
n .2294626919042282 1.6391e-09 deg/d
Q 2.86597389178005 1.3648e-08 au
  Orbit Determination Parameters
   # obs. used (total)      987  
   data-arc span      9660 days (26.45 yr)  
   first obs. used      1993-06-16  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5426  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:42:34  

Additional Information
 Earth MOID = 1.46212 au 
 Jupiter MOID = 2.45227 au 
 T_jup = 3.345 
[ 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 14.8   n/a MPO502485  
diameter diameter 3.054 km 0.654 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.274   0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49445 (1998 YS8)          Discovered 1998-Dec-17 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 YS8 = 1993 OB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-23 05:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin