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Tuesday, June 9, 2015

Near Earth Asteroids - Low Delta-V - Frame of reference co-rotating with earth

Due to their earth like orbit, these low delta-v asteroids move slowly when seen from earth. The resulting movement is very nice.

I tried to visualize asteroids which are likely to be lunar ejecta. I also add Bennu that moves much faster but it is interesting to see how it gets "near" to the earth during the Osiris-REx mission 

All the other asteroids are sorted by Delta-V.
The last two asteroids have a very low eccentricity.

The following graphs show their movement in the next 10 years:
  • Sun is at (0,0)
  • Earth is at about (1,0)

Bennu
a-e-i
1.126  0.204    6.0 
 
2006RH120
a-e-i 
1.033  0.024    0.6

2012TF79
a-e-i
1.050  0.038    1.0

2009BD
a-e-i 
1.062  0.052    1.3

2014WX202
a-e-i 
1.035  0.059    0.4

1991VG
a-e-i 
1.027  0.049    1.4

2013RZ53 (maybe artificial, though not very likely: see this link)
a-e-i
1.013  0.027    2.1


2014WA366
a-e-i 
1.034  0.071    1.6

2014WU200
a-e-i 
1.027  0.072    1.3

2015JD3
a-e-i 
1.058  0.008    2.7

2014TW
a-e-i 
1.029  0.009    9.0


Kind Regards,
Alessandro Odasso

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