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487894 (2015 TW155)
Classification: Main-belt Asteroid          SPK-ID: 2487894
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04716466057161898 5.3107e-08  
a 2.283272968095953 2.5122e-08 au
q 2.175583173563355 1.2237e-07 au
i 6.87805402996396 7.5272e-06 deg
node 11.39588104957905 4.3394e-05 deg
peri 122.4522869778088 9.1649e-05 deg
M 9.798855566355693 7.895e-05 deg
tp 2458966.198901002777
(2020-Apr-26.69890100)
0.00027645 TDB
period 1260.187534695232
3.45
2.0798e-05
5.694e-08
d
yr
n .2856717671684187 4.7146e-09 deg/d
Q 2.390962762628552 2.6306e-08 au
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      6680 days (18.29 yr)  
   first obs. used      2001-09-19  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 12:50:53  

Additional Information
 Earth MOID = 1.19642 au 
 Jupiter MOID = 2.60333 au 
 T_jup = 3.593 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457240.5 (2015-Aug-06.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04660721734709999 5.3466e-08  
q 2.177001940441671 1.2326e-07 au
tp 2457707.864852054040
(2016-Nov-15.36485205)
0.00028293 TDB
node 11.4188674189964 4.3364e-05 deg
peri 122.9629807176244 9.2212e-05 deg
i 6.880915186917445 7.5289e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      6680 days (18.29 yr)  
   first obs. used      2001-09-19  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 12:50:53  

Additional Information
 Jupiter MOID = 2.60333 au 
 T_jup = 3.593 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.858627609880008E-15 -6.465129789895461E-15 5.271523925882827E-12 -1.827259542186814E-14 1.544938952170142E-12 -2.087682359320583E-15
q -6.465129789895461E-15 1.51934078740065E-14 -1.361640073027499E-11 4.126278877642274E-14 -4.028325284392819E-12 5.502388200979938E-15
tp 5.271523925882827E-12 -1.361640073027499E-11 8.004720195808049E-8 -7.356605981576433E-11 2.303462223771135E-8 -2.081042823419232E-11
node -1.827259542186814E-14 4.126278877642274E-14 -7.356605981576433E-11 1.880395505347701E-9 -1.886765272960759E-9 5.888627711213663E-12
peri 1.544938952170142E-12 -4.028325284392819E-12 2.303462223771135E-8 -1.886765272960759E-9 8.502981002770698E-9 -1.183838758990435E-11
i -2.087682359320583E-15 5.502388200979938E-15 -2.081042823419232E-11 5.888627711213663E-12 -1.183838758990435E-11 5.668469306826092E-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 17.6   n/a MPO456352  

487894 (2015 TW155)          Discovered 2008-Sep-03 by Spacewatch at Kitt Peak
Reference: Last Updated: 2017-03-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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