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 ]  
6735 Madhatter (1992 WM3)
Classification: Main-belt Asteroid          SPK-ID: 2006735
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07857050125008844 3.3251e-08  
a 2.159200386536865 5.3165e-09 au
q 1.989550929867278 7.2881e-08 au
i 2.901310159374529 3.5307e-06 deg
node 75.08936808173476 7.8451e-05 deg
peri 357.8704230247472 8.3296e-05 deg
M 243.3141581774082 2.7757e-05 deg
tp 2459376.124156234746
(2021-Jun-10.62415623)
8.9722e-05 TDB
period 1158.878353468993
3.17
4.2802e-06
1.172e-08
d
yr
n .3106452018215493 1.1473e-09 deg/d
Q 2.32884984320645 5.7342e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2350  
   data-arc span      14426 days (39.50 yr)  
   first obs. used      1979-11-11  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44821  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:21:55  

Additional Information
 Earth MOID = 1.00426 au 
 Jupiter MOID = 2.83052 au 
 T_jup = 3.693 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456450.5 (2013-Jun-07.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07877439516481542 3.3401e-08  
q 1.988863867784559 7.3291e-08 au
tp 2455899.232343454233
(2011-Dec-03.73234345)
8.6194e-05 TDB
node 75.1295220123793 7.8375e-05 deg
peri 357.561063814163 8.316e-05 deg
i 2.90277682382947 3.5333e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2350  
   data-arc span      14426 days (39.50 yr)  
   first obs. used      1979-11-11  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44821  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:21:55  

Additional Information
 Jupiter MOID = 2.83052 au 
 T_jup = 3.693 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.115609963722339E-15 -2.442839458365188E-15 -1.46212767567495E-12 9.692117453904421E-15 -4.746967441954657E-13 -8.520971000206904E-16
q -2.442839458365188E-15 5.371627989058931E-15 3.222918058310162E-12 -2.120780883574682E-14 1.049121346193107E-12 1.879842033822397E-15
tp -1.46212767567495E-12 3.222918058310162E-12 7.429425424775181E-9 -2.069580607375372E-11 2.412186453341823E-9 2.453334247190687E-12
node 9.692117453904421E-15 -2.120780883574682E-14 -2.069580607375372E-11 6.142693016520146E-9 -6.141041865249383E-9 -1.276550243861302E-10
peri -4.746967441954657E-13 1.049121346193107E-12 2.412186453341823E-9 -6.141041865249383E-9 6.915507636367582E-9 1.282839323705354E-10
i -8.520971000206904E-16 1.879842033822397E-15 2.453334247190687E-12 -1.276550243861302E-10 1.282839323705354E-10 1.248393535898275E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO384816  

6735 Madhatter           Discovered 1992 Nov. 23 by T. Urata at the Nihondaira Observatory.
The Mad Hatter was a character who appears in various places in Lewis Carroll's classic story Alice's adventures in Wonderland. The citation was prepared by D. J. Asher.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1992 WM3 = 1979 VD = 1984 FH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Mar-30 17:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin