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487816 (2015 TW22)
Classification: Main-belt Asteroid          SPK-ID: 2487816
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2055116481607233 6.0825e-08  
a 3.173967729372838 5.5957e-08 au
q 2.521680390100478 1.8643e-07 au
i 10.39517901468574 6.9191e-06 deg
node 189.2824524468344 3.0243e-05 deg
peri 214.8703307450919 3.4505e-05 deg
M 282.9764361746758 1.7513e-05 deg
tp 2459442.399281695264
(2021-Aug-15.89928170)
0.00010808 TDB
period 2065.390557246465
5.65
5.4619e-05
1.495e-07
d
yr
n .1743011745342461 4.6094e-09 deg/d
Q 3.826255068645199 6.7457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      166  
   data-arc span      7549 days (20.67 yr)  
   first obs. used      1998-10-24  
   last obs. used      2019-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54192  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:19:41  

Additional Information
 Earth MOID = 1.53792 au 
 Jupiter MOID = 1.64164 au 
 T_jup = 3.143 
[ show covariance matrix ]

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 16.1   n/a MPO477320  

487816 (2015 TW22)          Discovered 1998-Oct-24 by Spacewatch at Kitt Peak
Reference: Last Updated: 2017-03-14

[ show close-approach data ]
Alternate Designations
 2015 TW22 = 1998 UA46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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