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 ]  
377097 (2002 WQ4)
Classification: Apollo [NEO, PHA]          SPK-ID: 2377097
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2456064.5 (2012-May-17.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5549220509456104 2.7151e-08  
a 1.958369837043343 7.8679e-09 au
q .8716272305612303 5.3536e-08 au
i 3.944608939093981 1.1782e-05 deg
node 267.1497884051385 6.1416e-05 deg
peri 244.3600882137957 6.4246e-05 deg
M 129.9495992259211 9.1389e-06 deg
tp 2455703.162581282755
(2011-May-21.66258128)
2.5757e-05 TDB
period 1001.014789680558
2.74
6.0325e-06
1.652e-08
d
yr
n .3596350460664847 2.1673e-09 deg/d
Q 3.045112443525456 1.2234e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -2.38720304911876E-14 6.075E-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)      226  
   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-N16  
   condition code      0  
   norm. resid. RMS      .56481  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-14 15:21:57  

Additional Information
 Earth MOID = .0195258 au 
 Jupiter MOID = 1.99038 au 
 T_jup = 3.675 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 19.6   n/a MPO281787  
rotation period rot_per 36. h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Warner, B.D. (2014) Minor Planet Bull. 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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin