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 ]  
359899 (2011 WA61)
Classification: Main-belt Asteroid          SPK-ID: 2359899
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .107272602360287 1.3496e-07  
a 2.638647431041543 5.2831e-08 au
q 2.35559285440243 3.9691e-07 au
i 3.092328403511788 6.6724e-06 deg
node 143.542004479489 0.00014742 deg
peri 265.638194118609 0.00015173 deg
M 10.56566144465308 4.1892e-05 deg
tp 2458954.552206154904
(2020-Apr-15.05220615)
0.00018125 TDB
period 1565.562730822254
4.29
4.7019e-05
1.287e-07
d
yr
n .2299492654701375 6.9061e-09 deg/d
Q 2.921702007680655 5.8498e-08 au
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      6261 days (17.14 yr)  
   first obs. used      2002-08-12  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61645  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 11:18:30  

Additional Information
 Earth MOID = 1.36818 au 
 Jupiter MOID = 2.40957 au 
 T_jup = 3.386 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457217.5 (2015-Jul-14.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1067683755907854 1.3536e-07  
q 2.357343334998482 3.981e-07 au
tp 2457382.202037019357
(2015-Dec-25.70203702)
0.00015226 TDB
node 143.6605361109752 0.00014734 deg
peri 264.1715959899792 0.00015159 deg
i 3.092936941244312 6.68e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      6261 days (17.14 yr)  
   first obs. used      2002-08-12  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61645  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 11:18:30  

Additional Information
 Jupiter MOID = 2.40957 au 
 T_jup = 3.386 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.832164715098761E-14 -5.377832476872177E-14 -1.09455924027027E-11 -1.167116431937012E-13 -2.199059562925837E-12 -2.602077658803718E-14
q -5.377832476872177E-14 1.584843225226202E-13 3.23048345721467E-11 3.481851115286642E-13 6.473889408154445E-12 7.739243788934205E-14
tp -1.09455924027027E-11 3.23048345721467E-11 2.3182580735076E-8 3.846508658462765E-11 5.488497047592439E-9 1.418778137400386E-11
node -1.167116431937012E-13 3.481851115286642E-13 3.846508658462765E-11 2.170934115458048E-8 -2.167055267879205E-8 3.455104600934126E-10
peri -2.199059562925837E-12 6.473889408154445E-12 5.488497047592439E-9 -2.167055267879205E-8 2.298007100854264E-8 -3.420870208430769E-10
i -2.602077658803718E-14 7.739243788934205E-14 1.418778137400386E-11 3.455104600934126E-10 -3.420870208430769E-10 4.462220466311368E-11

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 17.3   n/a MPO455597  

359899 (2011 WA61)          Discovered 2007-Dec-06 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 2011 WA61 = 2002 PF170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-27 14:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin