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377097 (2002 WQ4)
Classification: Apollo [NEO, PHA]          SPK-ID: 2377097
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2455766.5 (2011-Jul-24.0) TDB
Reference: JPL 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5548382148219573 3.2221e-08  
a 1.958705253171488 6.6267e-09 au
q .8719407271394298 6.3903e-08 au
i 3.944046193611025 9.3456e-06 deg
node 267.1477094485779 4.9443e-05 deg
peri 244.3800608240953 5.3086e-05 deg
M 22.77535140413593 7.7051e-06 deg
tp 2455703.154663908987
2.151e-05 JED
period 1001.271971093429
n .3595426721142164 1.8246e-09 deg/d
Q 3.045469779203546 1.0304e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -2.360213768056739E-14 5.923E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      23210 days (63.55 yr)  
   first obs. used      1950-12-11  
   last obs. used      2014-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .65424  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 16:26:48  

Additional Information
 Earth MOID = .0197412 au 
 Jupiter MOID = 1.98827 au 
 T_jup = 3.675 
 Nongravitational accels. using nonstandard g(r) = (1 AU/ r)^2 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.6 mag n/a MPO281787  
rotation period rot_per 36. h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Warner, B.D. (2014) Minor Planet Bul. 41, 157-168.]

377097 (2002 WQ4)          Discovered 2002-Nov-24 by NEAT at Palomar
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Alternate Designations
 2002 WQ4 = 1950 XB1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-03 04:57 UT
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