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29471 Spejbl (1997 UT7)
Classification: Main-belt Asteroid          SPK-ID: 2029471
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1104941648372108 3.9674e-08  
a 2.345790287448684 7.2253e-09 au
q 2.086594148753802 9.4302e-08 au
i 3.201910680073174 3.843e-06 deg
node 326.5940145272385 6.7536e-05 deg
peri 253.1072428614183 6.976e-05 deg
M 280.92079847526 1.9552e-05 deg
tp 2459488.765041185250
(2021-Oct-01.26504119)
7.1766e-05 TDB
period 1312.297201106965
3.59
6.063e-06
1.66e-08
d
yr
n .2743281016650256 1.2674e-09 deg/d
Q 2.604986426143568 8.0236e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1904  
   data-arc span      18203 days (49.84 yr)  
   first obs. used      1971-05-14  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48503  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:12:35  

Additional Information
 Earth MOID = 1.08034 au 
 Jupiter MOID = 2.37665 au 
 T_jup = 3.551 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.46   n/a E2021B10  
diameter diameter 3.021 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.369   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

29471 Spejbl           Discovered 1997 Oct. 27 by L. Šarounová at Ondřejov.
The Czech marionette Spejbl represents the father of mischievous Hurvínek. They demonstrate the different opinions of two generations in performances of The Theatre of Spejbl and Hurvínek in Prague. Spejbl has amused children as well as adults in 31 countries around the world since his first appearance in 1920.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1997 UT7 = 1998 XH38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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