Delta-v requirements for earth co-orbital rendezvous missions

Stacey, R. G. W.; Connors, Martin

doi:10.1016/j.pss.2009.01.013

Cited by 15 publications

(11 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main reason for such large velocities is the relatively high inclination of both 2020 XL 5 and 2010 TK 7 , resulting in an additional plane-change maneuver that is extremely costly. In a previous large-scale statistical survey of delta-v to Earth co-orbital asteroids, similar conclusions were derived regarding the importance of inclination when considering a low delta-v budget to rendezvous asteroids with Earth-like orbits 30 . It might be preferable to consider another Earth co-orbital object closer to Earth’s orbital plane, or instead of a rendezvous mission, consider a fly-by mission to the asteroid.…”

Section: Resultssupporting

confidence: 67%

“…When comparing the results for 2020 XL 5 to the other known ET, we can see that the latter presents slightly lower values for the absolute minimum total delta-v, which is estimated to be between 6 and 8.5 km/s, also far from the expected very low-energy requirements for rendezvous to theoretical ETs 30 . The main reason for such large velocities is the relatively high inclination of both 2020 XL 5 and 2010 TK 7 , resulting in an additional plane-change maneuver that is extremely costly.…”

Section: Resultsmentioning

confidence: 76%

“…ETs, among the Earth co-orbital objects, are considered to be potential candidates for rendezvous and even sample return missions, due to the low-energy requirements expected, as shown in previous works 30 with a theoretical population of ETs. Therefore, we decided to investigate the required delta-v budget for both a rendezvous and a fly-by mission to the two ETs known, 2020 XL 5 and 2010 TK 7 , in order to decide if they would be good candidates for a mission.…”

Section: Resultsmentioning

confidence: 96%

See 2 more Smart Citations

Orbital stability analysis and photometric characterization of the second Earth Trojan asteroid 2020 XL5

et al. 2022

View full text Add to dashboard Cite

Trojan asteroids are small bodies orbiting around the L4 or L5 Lagrangian points of a Sun-planet system. Due to their peculiar orbits, they provide key constraints to the Solar System evolution models. Despite numerous dedicated observational efforts in the last decade, asteroid 2010 TK7 has been the only known Earth Trojan thus far. Here we confirm that the recently discovered 2020 XL5 is the second transient Earth Trojan known. To study its orbit, we used archival data from 2012 to 2019 and observed the object in 2021 from three ground-based observatories. Our study of its orbital stability shows that 2020 XL5 will remain in L4 for at least 4 000 years. With a photometric analysis we estimate its absolute magnitude to be $${H}_{r}=18.5{8}_{-0.15}^{+0.16}$$ H r = 18.5 8 − 0.15 + 0.16 , and color indices suggestive of a C-complex taxonomy. Assuming an albedo of 0.06 ± 0.03, we obtain a diameter of 1.18 ± 0.08 km, larger than the first known Earth Trojan asteroid.

show abstract

Section: Resultssupporting

confidence: 67%

Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 96%

See 1 more Smart Citation

Orbital stability analysis and photometric characterization of the second Earth Trojan asteroid 2020 XL5

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Currently, the Earth has five known objects regarded as quasi‐satellites: 3753 Cruithne (Wiegert, Innanen & Mikkola ), 2003 YN 107 (Brasser et al ; Connors et al ), (164207) 2004 GU 9 (Brasser et al ; Connors et al ; Wiegert et al ; Mikkola et al ; Wajer ), 2006 FV 35 (Mikkola et al ; Stacey & Connors ; Wajer ) and 2010 SO 16 (Christou & Asher ). 2002 AA 29 will become a quasi‐satellite of the Earth in the future (Connors et al ).…”

Section: Discussionmentioning

confidence: 99%

On the dynamical evolution of 2002 VE₆₈

Marcos

2012

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

Minor planet 2002 VE68 was identified as a quasi-satellite of Venus shortly after its discovery. At that time its data-arc span was only 24 days, now it is 2,947 days. Here we revisit the topic of the dynamical status of this remarkable object as well as look into its dynamical past and explore its future orbital evolution which is driven by close encounters with both the Earth-Moon system and Mercury. In our calculations we use a Hermite integration scheme, the most updated ephemerides and include the perturbations by the eight major planets, the Moon and the three largest asteroids. We confirm that 2002 VE68 currently is a quasi-satellite of Venus and it has remained as such for at least 7,000 yr after a close fly-by with the Earth. Prior to that encounter the object may have already been co-orbital with Venus or moving in a classical, non-resonant Near-Earth Object (NEO) orbit. The object drifted into the quasi-satellite phase from an L4 Trojan state. We also confirm that, at aphelion, dangerously close encounters with the Earth (under 0.002 AU, well inside the Hill sphere) are possible. We find that 2002 VE68 will remain as a quasi-satellite of Venus for about 500 yr more and its dynamical evolution is controlled not only by the Earth, with a non-negligible contribution from the Moon, but by Mercury as well. 2002 VE68 exhibits resonant (or near resonant) behavior with Mercury, Venus and the Earth. Our calculations indicate that an actual collision with the Earth during the next 10,000 yr is highly unlikely but encounters as close as 0.04 AU occur with a periodicity of 8 years.Comment: 12 pages, 17 figures, accepted for publication in MNRAS (figures scaled-down

show abstract

“…There are two confirmed objects which at present are quasi-satellites of the Earth: (164207) 2004 GU 9 (hereafter 2004 GU 9 ) and 2006 FV 35 (Mikkola et al, 2006;Stacey and Connors, 2009). In this paper we analyze the dynamical evolution of these asteroids.…”

Section: Introductionmentioning

confidence: 99%