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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
270984 (2002 WF28)
Classification: Main-belt Asteroid          SPK-ID: 2270984
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1816379741602459 5.3863e-08  
a 2.397847329742315 2.2056e-08 au
q 1.962307198422366 1.3709e-07 au
i 2.431743434822126 6.1275e-06 deg
node 157.4973058530328 0.0001511 deg
peri 299.3100602907521 0.00015393 deg
M 337.3401200289927 3.7663e-05 deg
tp 2459481.866175217218
(2021-Sep-24.36617522)
0.00014287 TDB
period 1356.221794533737
3.71
1.8712e-05
5.123e-08
d
yr
n .2654433083519105 3.6624e-09 deg/d
Q 2.833387461062264 2.6062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      6503 days (17.80 yr)  
   first obs. used      2002-11-23  
   last obs. used      2020-09-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:34:25  

Additional Information
 Earth MOID = .98064 au 
 Jupiter MOID = 2.33818 au 
 T_jup = 3.504 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457522.5 (2016-May-14.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1815510702512008 5.4403e-08  
q 1.962897382086504 1.3894e-07 au
tp 2458121.490300374868
(2018-Jan-02.99030038)
0.00012733 TDB
node 157.6521049078278 0.00015149 deg
peri 298.4277215407001 0.0001543 deg
i 2.428376969868304 6.1227e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      6503 days (17.80 yr)  
   first obs. used      2002-11-23  
   last obs. used      2020-09-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:34:25  

Additional Information
 Jupiter MOID = 2.33818 au 
 T_jup = 3.504 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.959664074385216E-15 -7.501748041239473E-15 -3.135145085551567E-12 4.804057271340626E-16 -7.14921136151405E-13 5.162797920858721E-16
q -7.501748041239473E-15 1.930450216790604E-14 9.414696111710614E-12 2.750192776852346E-15 2.131382468570385E-12 -1.219511159324643E-15
tp -3.135145085551567E-12 9.414696111710614E-12 1.621380067078899E-8 1.937421985965331E-11 3.770824184010344E-9 -1.069696442128974E-13
node 4.804057271340626E-16 2.750192776852346E-15 1.937421985965331E-11 2.29483507109821E-8 -2.292317496406645E-8 2.336105469069015E-10
peri -7.14921136151405E-13 2.131382468570385E-12 3.770824184010344E-9 -2.292317496406645E-8 2.380705281276364E-8 -2.334442949758981E-10
i 5.162797920858721E-16 -1.219511159324643E-15 -1.069696442128974E-13 2.336105469069015E-10 -2.334442949758981E-10 3.748789324905001E-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 18.13   n/a MPCxxxxx  

270984 (2002 WF28)          Discovered 2002-Nov-24 by NEAT at Palomar
Reference: 20110418/Numbers.arcLast Updated: 2011-04-22

[ show close-approach data ]
Alternate Designations
 2002 WF28 = 2007 BT38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-20 09:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin