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123928 (2001 ED6)
Classification: Main-belt Asteroid          SPK-ID: 2123928
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1147542492070476 3.9038e-08  
a 2.770596739590902 2.1073e-08 au
q 2.452658990883654 1.139e-07 au
i 12.76021974669971 5.7338e-06 deg
node 15.11920917799217 1.978e-05 deg
peri 257.302281958676 3.3088e-05 deg
M 60.99399986790005 2.4965e-05 deg
tp 2459111.107195773382
(2020-Sep-18.60719577)
0.00011721 TDB
period 1684.451089354664
4.61
1.9218e-05
5.262e-08
d
yr
n .2137194735276765 2.4383e-09 deg/d
Q 3.08853448829815 2.3491e-08 au
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      7978 days (21.84 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60629  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:52:45  

Additional Information
 Earth MOID = 1.47597 au 
 Jupiter MOID = 2.08122 au 
 T_jup = 3.292 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128612363775808 3.926e-08  
q 2.45762218328951 1.1376e-07 au
tp 2457426.900532887212
(2016-Feb-08.40053289)
0.00012322 TDB
node 15.2139143834706 1.9794e-05 deg
peri 257.2184351382667 3.3404e-05 deg
i 12.75445536142009 5.7312e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      7978 days (21.84 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60629  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:52:45  

Additional Information
 Jupiter MOID = 2.08122 au 
 T_jup = 3.292 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.541359589839069E-15 -4.41089355543961E-15 -2.189955141977238E-13 -6.187638229964915E-15 -2.443959600200939E-14 -7.782720610592862E-16
q -4.41089355543961E-15 1.294047922876817E-14 -5.830763340399048E-14 1.845849589038325E-14 -9.484172094832443E-14 3.652865457888484E-15
tp -2.189955141977238E-13 -5.830763340399048E-14 1.5184040106218E-8 -2.397270205251002E-12 3.33199403572261E-9 -5.865954078563452E-12
node -6.187638229964915E-15 1.845849589038325E-14 -2.397270205251002E-12 3.918106980277182E-10 -3.820474932967884E-10 -1.241460089196842E-13
peri -2.443959600200939E-14 -9.484172094832443E-14 3.33199403572261E-9 -3.820474932967884E-10 1.115851897465918E-9 -1.142696052157352E-12
i -7.782720610592862E-16 3.652865457888484E-15 -5.865954078563452E-12 -1.241460089196842E-13 -1.142696052157352E-12 3.284667927367948E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.17   n/a E2021B55  
rotation period rot_per 3.692 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

123928 (2001 ED6)          Discovered 2001-Mar-02 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 2001 ED6 = 1998 SQ44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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