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1093 Freda (1925 LA)
Classification: Main-belt Asteroid          SPK-ID: 2001093
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2711508367867829 1.1857e-08  
a 3.129802867207732 1.1949e-08 au
q 2.281154200786683 3.5852e-08 au
i 25.202147056045 6.5077e-07 deg
node 55.60932949041183 2.6841e-06 deg
peri 251.1691575924888 5.9082e-06 deg
M 64.50306542588753 4.3205e-06 deg
tp 2459034.130399973233
(2020-Jul-03.63039997)
2.3161e-05 TDB
period 2022.431882086653
5.54
1.1582e-05
3.171e-08
d
yr
n .1780035229807436 1.0194e-09 deg/d
Q 3.978451533628782 1.5189e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3278  
   data-arc span      33777 days (92.48 yr)  
   first obs. used      1929-02-02  
   last obs. used      2021-07-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38288  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:12:26  

Additional Information
 Earth MOID = 1.39312 au 
 Jupiter MOID = 1.71069 au 
 T_jup = 3.013 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456548.5 (2013-Sep-13.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2707530579940077 1.1648e-08  
q 2.28273207403972 3.5078e-08 au
tp 2457014.078929331248
(2014-Dec-22.57892933)
2.0489e-05 TDB
node 55.63846358246636 2.6829e-06 deg
peri 251.644070923408 5.9421e-06 deg
i 25.21187817558405 6.5099e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3278  
   data-arc span      33777 days (92.48 yr)  
   first obs. used      1929-02-02  
   last obs. used      2021-07-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38288  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:12:26  

Additional Information
 Jupiter MOID = 1.71069 au 
 T_jup = 3.013 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.356841174328654E-16 -3.965579698008596E-16 -9.693528809422833E-14 -8.821519730397054E-15 -2.642416997359216E-14 2.175494133787943E-15
q -3.965579698008596E-16 1.230445265763253E-15 2.986372652465275E-13 2.702353112168484E-14 8.152786067160975E-14 -6.669689351752659E-15
tp -9.693528809422833E-14 2.986372652465275E-13 4.197843416799457E-10 -7.543363662049776E-12 1.133085179722404E-10 1.604407614312266E-12
node -8.821519730397054E-15 2.702353112168484E-14 -7.543363662049776E-12 7.198038916402051E-12 -7.02453389497321E-12 -1.545076746285483E-12
peri -2.642416997359216E-14 8.152786067160975E-14 1.133085179722404E-10 -7.02453389497321E-12 3.530816314009641E-11 1.480971520849766E-12
i 2.175494133787943E-15 -6.669689351752659E-15 1.604407614312266E-12 -1.545076746285483E-12 1.480971520849766E-12 4.237842870799203E-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 9.04   n/a E2021B10 IRAS observations used: 8
diameter diameter 116.73 km 2.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
rotation period rot_per 19.67 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2008) Minor Planet Bull. 35, 163-167.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.0381   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
B-V BV 0.679   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=7.61, mean=9.88, max.=10.77) deg.
U-B UB 0.356   0.052 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=7.61, mean=9.88, max.=10.77) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1093 Freda (1925 LA)          Discovered 1925-Jun-15 by Jekhovsky, B. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1925 LA = A898 VE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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