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948 Jucunda (A921 EL)
Classification: Main-belt Asteroid          SPK-ID: 2000948
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634653773939834 2.358e-08  
a 3.032537902037707 1.1035e-08 au
q 2.536822949419555 7.4022e-08 au
i 8.653440018484261 5.7708e-07 deg
node 357.0918698786124 3.5415e-06 deg
peri 163.2168855363585 7.8195e-06 deg
M 315.2367777642478 4.0091e-06 deg
tp 2459440.342765808475
(2021-Aug-13.84276581)
2.1737e-05 TDB
period 1928.891428689177
5.28
1.0528e-05
2.882e-08
d
yr
n .1866356989541119 1.0187e-09 deg/d
Q 3.52825285465586 1.2839e-08 au
  Orbit Determination Parameters
   # obs. used (total)      4149  
   data-arc span      36527 days (100.01 yr)  
   first obs. used      1921-03-03  
   last obs. used      2021-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35624  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 11:57:00  

Additional Information
 Earth MOID = 1.54626 au 
 Jupiter MOID = 1.45258 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457173.5 (2015-May-31.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637894994737884 2.3858e-08  
q 2.533991576215277 7.4988e-08 au
tp 2457516.546059277258
(2016-May-08.04605928)
2.1302e-05 TDB
node 357.1247940632181 3.5393e-06 deg
peri 163.9777332707377 7.6956e-06 deg
i 8.659023244615879 5.7767e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      4149  
   data-arc span      36527 days (100.01 yr)  
   first obs. used      1921-03-03  
   last obs. used      2021-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35624  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 11:57:00  

Additional Information
 Jupiter MOID = 1.45258 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.692127016555253E-16 -1.776048714865561E-15 2.673332378178564E-13 4.153858474376104E-15 9.670005466270672E-14 1.869487457502388E-16
q -1.776048714865561E-15 5.623205729378305E-15 -8.631534283826233E-13 -1.34925254737729E-14 -3.099821061208535E-13 -4.897455814381973E-16
tp 2.673332378178564E-13 -8.631534283826233E-13 4.537773294749811E-10 -2.339216648885535E-11 1.492609243190064E-10 3.505547783174888E-12
node 4.153858474376104E-15 -1.34925254737729E-14 -2.339216648885535E-11 1.252690198738811E-11 -1.735449435248085E-11 -1.428907072400021E-12
peri 9.670005466270672E-14 -3.099821061208535E-13 1.492609243190064E-10 -1.735449435248085E-11 5.922280895250303E-11 2.258598444866407E-12
i 1.869487457502388E-16 -4.897455814381973E-16 3.505547783174888E-12 -1.428907072400021E-12 2.258598444866407E-12 3.337025476681107E-13

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 11.52   n/a E2021B10  
diameter diameter 17.331 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 26.24 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2011) Minor Planet Bull. 38, 211-212.]
geometric albedo albedo 0.130   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

948 Jucunda (A921 EL)          Discovered 1921-Mar-03 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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