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17383 (1981 EE12)
Classification: Main-belt Asteroid          SPK-ID: 2017383
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09904949186788668 3.1534e-08  
a 2.300700375673995 8.5373e-09 au
q 2.07281717252323 7.2624e-08 au
i 5.300081116910859 3.9193e-06 deg
node 281.56536371876 4.0794e-05 deg
peri 146.9593142273857 4.6414e-05 deg
M 185.6340217796461 2.2364e-05 deg
tp 2459617.873198365222
(2022-Feb-07.37319837)
8.0447e-05 TDB
period 1274.642872880897
3.49
7.0948e-06
1.942e-08
d
yr
n .2824320503093876 1.572e-09 deg/d
Q 2.52858357882476 9.3829e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1420  
   data-arc span      14433 days (39.52 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50104  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:21:19  

Additional Information
 Earth MOID = 1.08948 au 
 Jupiter MOID = 2.6921 au 
 T_jup = 3.579 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456928.5 (2014-Sep-28.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09866753185752031 3.1585e-08  
q 2.073334599772456 7.2708e-08 au
tp 2457070.056474044601
(2015-Feb-16.55647404)
7.6573e-05 TDB
node 281.635567049844 4.0774e-05 deg
peri 147.1995839738444 4.6433e-05 deg
i 5.301560769962688 3.9205e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1420  
   data-arc span      14433 days (39.52 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50104  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:21:19  

Additional Information
 Jupiter MOID = 2.6921 au 
 T_jup = 3.579 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.975908805005998E-16 -2.283401464164059E-15 1.624777142735203E-13 -3.165781196352514E-15 5.25550296993116E-14 -3.347760076839881E-16
q -2.283401464164059E-15 5.286422878969161E-15 -2.558959018328328E-13 7.635438822311464E-15 -8.922123424323432E-14 8.801269187622413E-16
tp 1.624777142735203E-13 -2.558959018328328E-13 5.863445004627847E-9 9.097078417210439E-12 1.71302978981821E-9 1.619270013967738E-12
node -3.165781196352514E-15 7.635438822311464E-15 9.097078417210439E-12 1.662538918660714E-9 -1.652409845651891E-9 1.926620363066553E-11
peri 5.25550296993116E-14 -8.922123424323432E-14 1.71302978981821E-9 -1.652409845651891E-9 2.15599698864288E-9 -1.872820693812132E-11
i -3.347760076839881E-16 8.801269187622413E-16 1.619270013967738E-12 1.926620363066553E-11 -1.872820693812132E-11 1.536994449340858E-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 15.0   n/a MPO381403  
diameter diameter 2.352 km 0.565 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.4 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Binzel, R.P.; Xu, S.; Bus, S.J.; Bowell, E. (1992) Icarus 99, 225-237; Science 257, 779-782.]
geometric albedo albedo 0.231   0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17383 (1981 EE12)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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