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66787 (1999 TY228)
Classification: Main-belt Asteroid          SPK-ID: 2066787
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0686364070953344 4.7113e-08  
a 2.766446040163709 1.9623e-08 au
q 2.576567123543757 1.3475e-07 au
i 9.538612432034464 5.2267e-06 deg
node 179.6207642276951 2.9033e-05 deg
peri 47.68771060786895 4.6192e-05 deg
M 314.0397771654606 3.6357e-05 deg
tp 2459215.066223429739
(2020-Dec-31.56622343)
0.0001703 TDB
period 1680.667230722324
4.60
1.7882e-05
4.896e-08
d
yr
n .2142006421135954 2.2791e-09 deg/d
Q 2.956324956783661 2.097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      10699 days (29.29 yr)  
   first obs. used      1990-10-19  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55151  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:03:16  

Additional Information
 Earth MOID = 1.57943 au 
 Jupiter MOID = 2.02773 au 
 T_jup = 3.316 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456910.5 (2014-Sep-10.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07052159805526584 4.6983e-08  
q 2.571400767512222 1.3483e-07 au
tp 2457531.075157621409
(2016-May-22.57515762)
0.00016214 TDB
node 179.697204724228 2.9085e-05 deg
peri 47.16450396491547 4.5504e-05 deg
i 9.52914808940983 5.2229e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      10699 days (29.29 yr)  
   first obs. used      1990-10-19  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55151  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:03:16  

Additional Information
 Jupiter MOID = 2.02773 au 
 T_jup = 3.316 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.207420587114817E-15 -6.278869496155507E-15 -6.186105402870232E-13 2.629922024175306E-15 -1.186423762100412E-13 -1.476120561078649E-15
q -6.278869496155507E-15 1.817917532954408E-14 2.197666829748156E-12 -6.165695768074354E-15 4.043875765510199E-13 4.76421131846648E-15
tp -6.186105402870232E-13 2.197666829748156E-12 2.629074846968853E-8 1.117499807755262E-11 5.693122200804563E-9 6.258976935310026E-12
node 2.629922024175306E-15 -6.165695768074354E-15 1.117499807755262E-11 8.459481004889143E-10 -8.315922396818061E-10 1.203981817195455E-11
peri -1.186423762100412E-13 4.043875765510199E-13 5.693122200804563E-9 -8.315922396818061E-10 2.070596842344231E-9 -1.057267819231472E-11
i -1.476120561078649E-15 4.76421131846648E-15 6.258976935310026E-12 1.203981817195455E-11 -1.057267819231472E-11 2.727817261216616E-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 15.1   n/a MPO333374  

66787 (1999 TY228)          Discovered 1999-Oct-03 by Spacewatch at Kitt Peak
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TY228 = 1997 EN43 = 1999 TN326 = 2002 EA87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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