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13529 Yokaboshi (1991 RE1)
Classification: Main-belt Asteroid          SPK-ID: 2013529
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09565392405828285 1.4116e-08  
a 2.242265793340685 5.3645e-09 au
q 2.02778427142599 3.1947e-08 au
i 4.363066765140934 7.3983e-07 deg
node 312.6439570715983 5.5821e-06 deg
peri 173.7784903471031 9.095e-06 deg
M 177.5965895021052 7.427e-06 deg
tp 2458791.491905680205
(2019-Nov-03.99190568)
2.5086e-05 TDB
period 1226.391309460054
3.36
4.4011e-06
1.205e-08
d
yr
n .2935441544823879 1.0534e-09 deg/d
Q 2.45674731525538 5.8776e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2528  
   data-arc span      10888 days (29.81 yr)  
   first obs. used      1991-09-01  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45938  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:17:03  

Additional Information
 Earth MOID = 1.04357 au 
 Jupiter MOID = 2.58033 au 
 T_jup = 3.624 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457135.5 (2015-Apr-23.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09598247653687102 1.4155e-08  
q 2.026343724579887 3.2094e-08 au
tp 2457566.591058435466
(2016-Jun-27.09105844)
2.5106e-05 TDB
node 312.7012858208256 5.5803e-06 deg
peri 173.8319301545626 9.0636e-06 deg
i 4.364772471959284 7.3997e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2528  
   data-arc span      10888 days (29.81 yr)  
   first obs. used      1991-09-01  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45938  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:17:03  

Additional Information
 Jupiter MOID = 2.58033 au 
 T_jup = 3.624 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.003654984111902E-16 -4.489506039971719E-16 -1.578971833825969E-13 -5.328978747163504E-15 -2.704682869976195E-14 -6.619363130979176E-16
q -4.489506039971719E-16 1.030028680957307E-15 3.391100401058527E-13 1.155990187230001E-14 5.4859115680741E-14 1.476054847636913E-15
tp -1.578971833825969E-13 3.391100401058527E-13 6.303020296915384E-10 1.424285455893762E-12 1.762804041162412E-10 -1.0742868875904E-12
node -5.328978747163504E-15 1.155990187230001E-14 1.424285455893762E-12 3.11399563896987E-11 -3.077715389517842E-11 -5.314872162740275E-13
peri -2.704682869976195E-14 5.4859115680741E-14 1.762804041162412E-10 -3.077715389517842E-11 8.214922872523324E-11 2.32712161621473E-13
i -6.619363130979176E-16 1.476054847636913E-15 -1.0742868875904E-12 -5.314872162740275E-13 2.32712161621473E-13 5.475594765058409E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.88   n/a E2021B10  

13529 Yokaboshi           Discovered 1991 Sept. 1 by T. Seki at Geisei.
Yokaboshi is a local astronomical group established at Baloon Yoka Astronomical Observatory in 1992 in collaboration with the local government. Equipped with a 0.4-m reflector, the group continues to popularize astronomy and educate the public. The name was suggested by H. Kosai.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120207/MPCPages.arcLast Updated: 2012-02-09

Alternate Designations
 1991 RE1 = 1998 SN61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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