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283142 Weena (2008 YV29)
Classification: Main-belt Asteroid          SPK-ID: 2283142
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0407971530120048 5.2996e-08  
a 2.637328778063763 2.4986e-08 au
q 2.529733272362132 1.482e-07 au
i 21.2599188831349 5.4589e-06 deg
node 253.3645326291502 1.5851e-05 deg
peri 171.9390086532941 7.9353e-05 deg
M 306.9506440869711 7.9626e-05 deg
tp 2459431.027346908351
(2021-Aug-04.52734691)
0.00034725 TDB
period 1564.389302352002
4.28
2.2232e-05
6.087e-08
d
yr
n .2301217474823902 3.2703e-09 deg/d
Q 2.744924283765394 2.6005e-08 au
  Orbit Determination Parameters
   # obs. used (total)      385  
   data-arc span      9114 days (24.95 yr)  
   first obs. used      1995-12-27  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .425  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 04:24:33  

Additional Information
 Earth MOID = 1.54442 au 
 Jupiter MOID = 2.52286 au 
 T_jup = 3.299 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458039.5 (2017-Oct-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04178740538970017 5.3739e-08  
q 2.527369535225973 1.5075e-07 au
tp 2457854.411174486183
(2017-Apr-10.91117449)
0.00032657 TDB
node 253.3945019621094 1.5837e-05 deg
peri 169.3215186545195 7.6607e-05 deg
i 21.26995270571356 5.4615e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      385  
   data-arc span      9114 days (24.95 yr)  
   first obs. used      1995-12-27  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .425  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 04:24:33  

Additional Information
 Jupiter MOID = 2.52286 au 
 T_jup = 3.299 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.887930098126505E-15 -8.006499616090059E-15 -4.106367756605399E-12 -2.591941518232147E-14 -8.394694053521231E-13 -1.247597302813527E-14
q -8.006499616090059E-15 2.272556102162699E-14 1.34324505992586E-11 7.266754672393434E-14 2.810014993074772E-12 3.885440814467469E-14
tp -4.106367756605399E-12 1.34324505992586E-11 1.066502748091569E-7 1.166521583324206E-10 2.450766531858672E-8 1.232176066994628E-10
node -2.591941518232147E-14 7.266754672393434E-14 1.166521583324206E-10 2.508188807836332E-10 -2.070113756235391E-10 -3.044061177528963E-12
peri -8.394694053521231E-13 2.810014993074772E-12 2.450766531858672E-8 -2.070113756235391E-10 5.868677668786085E-9 3.116900212683597E-11
i -1.247597302813527E-14 3.885440814467469E-14 1.232176066994628E-10 -3.044061177528963E-12 3.116900212683597E-11 2.982746746426982E-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 15.76   n/a E2021B55  

283142 Weena           Discovered 2008 Dec. 29 by E. Schwab and R. Kling at Taunus.
Weena is the major female character in "The Time Machine", an 1895 novel by H. G. Wells. In the 1960 film version, which received an Oscar for time-lapse photographic effects, the role of Weena was played by the actress Yvette Mimieux.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-12-17Last Updated: 2013-12-19

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