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 ]  
295863 (2008 WA4)
Classification: Main-belt Asteroid          SPK-ID: 2295863
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06504160126032617 4.6411e-08  
a 2.231575388450746 1.3866e-08 au
q 2.086430151852775 9.8267e-08 au
i 2.211590319964818 6.0724e-06 deg
node 193.4147500755841 0.00010766 deg
peri 251.7117591762944 0.00011695 deg
M 129.9585550734501 4.6998e-05 deg
tp 2458560.940020255581
(2019-Mar-18.44002026)
0.000158 TDB
period 1217.631210338985
3.33
1.1349e-05
3.107e-08
d
yr
n .2956560220723786 2.7556e-09 deg/d
Q 2.376720625048717 1.4768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      163  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      2001-08-21  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52923  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 18:44:56  

Additional Information
 Earth MOID = 1.10377 au 
 Jupiter MOID = 2.73195 au 
 T_jup = 3.638 
[ 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 18.1   n/a MPO413252  

295863 (2008 WA4)          Discovered 2008-Nov-17 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1967-Dec-22 05:49 00:11 Thisb 0.038658407506666 0.0386503549286257 0.0386664625509229 2.95148529164999 2.9514852318928 2439846.742621946 10.8137792570602 633.76205275392 51.7509886604144 50.9525445716121 86888.6961663283 T 8 CATAB v2.0f-lin.ifort 2020-May-21 18:45:21 2020-May-21 18:45

Alternate Designations
 2008 WA4 = 2001 QP186 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-13 00:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin