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95550 (2002 ET89)
Classification: Outer Main-belt Asteroid          SPK-ID: 2095550
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1029087927300048 6.0683e-08  
a 3.223123162747938 2.0407e-08 au
q 2.891435449249434 1.9642e-07 au
i 17.40273505556835 5.5934e-06 deg
node 183.9007671107626 1.5534e-05 deg
peri 24.26656126964554 2.6973e-05 deg
M 15.54570011962225 1.9958e-05 deg
tp 2458909.231363243141
(2020-Feb-29.73136324)
0.00011743 TDB
period 2113.556094588266
5.79
2.0072e-05
5.495e-08
d
yr
n .170329049189551 1.6176e-09 deg/d
Q 3.554810876246443 2.2507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      745  
   data-arc span      8482 days (23.22 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53072  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:25:08  

Additional Information
 Earth MOID = 1.89715 au 
 Jupiter MOID = 1.41772 au 
 T_jup = 3.108 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457479.5 (2016-Apr-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1029105521886434 6.0486e-08  
q 2.893479359539474 1.9582e-07 au
tp 2456789.755247042427
(2014-May-12.25524704)
0.00012564 TDB
node 183.9212066616237 1.553e-05 deg
peri 23.57567292666343 2.7089e-05 deg
i 17.40147390047085 5.593e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      745  
   data-arc span      8482 days (23.22 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53072  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:25:08  

Additional Information
 Jupiter MOID = 1.41772 au 
 T_jup = 3.108 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.658576785826963E-15 -1.179232501287164E-14 2.477497808184994E-12 3.620719885055501E-15 5.052603615387507E-13 -6.235538380366937E-15
q -1.179232501287164E-14 3.834516123994898E-14 -8.97860271772172E-12 -2.401057575120043E-14 -1.77621275862215E-12 2.196833124012233E-14
tp 2.477497808184994E-12 -8.97860271772172E-12 1.578615685239446E-8 4.639043693494043E-11 2.810094042209835E-9 -1.380207642442168E-12
node 3.620719885055501E-15 -2.401057575120043E-14 4.639043693494043E-11 2.411804213632771E-10 -2.230104859141906E-10 4.235215476862122E-11
peri 5.052603615387507E-13 -1.77621275862215E-12 2.810094042209835E-9 -2.230104859141906E-10 7.338299450249773E-10 -4.056521560117975E-11
i -6.235538380366937E-15 2.196833124012233E-14 -1.380207642442168E-12 4.235215476862122E-11 -4.056521560117975E-11 3.128208624611188E-11

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 14.4   n/a MPO436438  

95550 (2002 ET89)          Discovered 2002-Mar-12 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 2002 ET89 = 1997 JB3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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