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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09565392439153007 1.4111e-08  
a 2.24226579248693 5.2211e-09 au
q 2.02778426990667 3.1887e-08 au
i 4.363066765087948 7.3981e-07 deg
node 312.6439567563487 5.5759e-06 deg
peri 173.7784914759626 9.0167e-06 deg
M 177.5965891338859 7.4078e-06 deg
tp 2458791.491907280137
(2019-Nov-03.99190728)
2.4979e-05 TDB
period 1226.39130875962
3.36
4.2834e-06
1.173e-08
d
yr
n .2935441546500409 1.0253e-09 deg/d
Q 2.456747315067188 5.7205e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2652  
   data-arc span      10935 days (29.94 yr)  
   first obs. used      1991-09-01  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4499  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:04:55  

Additional Information
 Earth MOID = 1.04357 au 
 Jupiter MOID = 2.58033 au 
 T_jup = 3.624 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457231.5 (2015-Jul-28.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09597276463445159 1.4147e-08  
q 2.026286795597467 3.2024e-08 au
tp 2457566.681159097168
(2016-Jun-27.18115910)
2.4896e-05 TDB
node 312.6992403166478 5.5745e-06 deg
peri 173.8631325969295 8.9888e-06 deg
i 4.364644864073431 7.3995e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2652  
   data-arc span      10935 days (29.94 yr)  
   first obs. used      1991-09-01  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4499  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:04:55  

Additional Information
 Jupiter MOID = 2.58033 au 
 T_jup = 3.624 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.001397037143651E-16 -4.47987651058415E-16 -1.592500888585217E-13 -5.317718755794479E-15 -2.753432680003708E-14 -6.611334433834169E-16
q -4.47987651058415E-16 1.025550766005451E-15 3.458680587786194E-13 1.154800598680952E-14 5.724844446532501E-14 1.470986931185947E-15
tp -1.592500888585217E-13 3.458680587786194E-13 6.198149581073488E-10 1.385632518176707E-12 1.726067927118969E-10 -1.064745205598532E-12
node -5.317718755794479E-15 1.154800598680952E-14 1.385632518176707E-12 3.107476524725897E-11 -3.072517192417417E-11 -5.309531928771258E-13
peri -2.753432680003708E-14 5.724844446532501E-14 1.726067927118969E-10 -3.072517192417417E-11 8.079816411581607E-11 2.354979796188022E-13
i -6.611334433834169E-16 1.470986931185947E-15 -1.064745205598532E-12 -5.309531928771258E-13 2.354979796188022E-13 5.475211215715146E-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 13.89   n/a MPO636269  

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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