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207901 Tzecmaun (2008 US91)
Classification: Main-belt Asteroid          SPK-ID: 2207901
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 .1222216840400132 5.1157e-08  
a 3.060583288957889 3.2674e-08 au
q 2.686513645236734 1.5931e-07 au
i 9.982748936542865 5.0526e-06 deg
node 70.39603656680745 3.4364e-05 deg
peri 241.6257593650416 4.1587e-05 deg
M 178.3256844508649 2.6254e-05 deg
tp 2458231.740153614033
(2018-Apr-23.24015361)
0.00013924 TDB
period 1955.711235725228
5.35
3.1318e-05
8.574e-08
d
yr
n .1840762549316248 2.9477e-09 deg/d
Q 3.434652932679044 3.6668e-08 au
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      7236 days (19.81 yr)  
   first obs. used      2001-05-18  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52632  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:20:01  

Additional Information
 Earth MOID = 1.68789 au 
 Jupiter MOID = 1.83786 au 
 T_jup = 3.199 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457654.5 (2016-Sep-23.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1223464753336715 5.1187e-08  
q 2.688016031658318 1.5887e-07 au
tp 2458227.321937742798
(2018-Apr-18.82193774)
0.00013914 TDB
node 70.44361332654591 3.44e-05 deg
peri 240.6192880983068 4.1557e-05 deg
i 9.97619787660167 5.0488e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      7236 days (19.81 yr)  
   first obs. used      2001-05-18  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52632  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:20:01  

Additional Information
 Jupiter MOID = 1.83786 au 
 T_jup = 3.199 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.620105275377112E-15 -7.996972652419807E-15 1.640287149466618E-12 -1.322768387782029E-14 2.705740294944334E-13 2.745993759206774E-15
q -7.996972652419807E-15 2.524116819855315E-14 -4.247371253988108E-12 4.059083535067826E-14 -7.475227219099552E-13 -8.443949259429764E-15
tp 1.640287149466618E-12 -4.247371253988108E-12 1.935898798370537E-8 -1.037810107571061E-11 3.298446673332502E-9 -3.311874401255945E-12
node -1.322768387782029E-14 4.059083535067826E-14 -1.037810107571061E-11 1.183382463735315E-9 -1.166640632973125E-9 -1.122477232762668E-12
peri 2.705740294944334E-13 -7.475227219099552E-13 3.298446673332502E-9 -1.166640632973125E-9 1.726964688634445E-9 5.677846570340126E-13
i 2.745993759206774E-15 -8.443949259429764E-15 -3.311874401255945E-12 -1.122477232762668E-12 5.677846570340126E-13 2.549038068890752E-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 15.68   n/a MPCxxxxx  
diameter diameter 5.146 km 1.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

207901 Tzecmaun           Discovered 2008 Oct. 28 by E. Schwab at Tzec Maun.
The Tzec Maun Foundation provides free access to remote-controlled telescopes. Pronounced "Teh-Zeck-Moan", the name is one of the words used by the ancient Mayan people for the planet Mercury. This is the first minor planet discovered at an observatory of the Tzec Maun Foundation to be numbered.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090409/MPCPages.arcLast Updated: 2009-04-10

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Alternate Designations
 2008 US91 = 2006 FU35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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