Accessibility of Main-Belt Asteroids via Gravity Assists

2014 ◽  
Vol 37 (2) ◽  
pp. 623-632 ◽  
Author(s):  
Yang Chen ◽  
Hexi Baoyin ◽  
Junfeng Li
Keyword(s):  
Main Belt ◽  
Gravity Assists

scholarly journals OPTIMAL TRAJECTORIES TO KUIPER BELT OBJECTS

2019 ◽  
Vol 55 (1) ◽  
pp. 39-54
Author(s):  
D. M. Sanchez ◽  
A. A. Sukhanov ◽  
A. F. B. A. Prado
Keyword(s):  
Kuiper Belt ◽  
Target Object ◽  
Optimal Trajectories ◽  
Main Belt ◽  
Kuiper Belt Objects ◽  
The Earth ◽  
Gravity Assists ◽  
Patched Conics ◽  
Scientific Return

The present paper searches for transfers from the Earth to three of the Kuiper Belt Objects (KBO): Haumea, Makemake, and Quaoar. These trajectories are obtained considering different possibilities of intermediate planet gravity assists. The model is based on the “patched-conics” approach. The best trajectories are found by searching for the minimum total ∆V transfer for a given launch window, inside the 2023-2034 interval, and disregarding the ∆V required for the capture at the target object. The results show transfers with duration below 20 years that spend a total ∆ V under 10 km/s. There is also one trajectory for each of the KBOs with ∆V under 10 km/s and duration below 10 years, using the Jupiter swingby. For the 20-year trajectories, there are also asteroids in the main belt that could be encountered with low additional ∆V , so increasing the scientific return of the mission.

Brief summary of Kleť photographic search programme for minor planets

1999 ◽  
Vol 173 ◽  
pp. 189-192
Author(s):  
J. Tichá ◽  
M. Tichý ◽  
Z. Moravec
Keyword(s):  
Ccd Camera ◽  
Minor Planet ◽  
Minor Planets ◽  
Main Belt

AbstractA long-term photographic search programme for minor planets was begun at the Kleť Observatory at the end of seventies using a 0.63-m Maksutov telescope, but with insufficient respect for long-arc follow-up astrometry. More than two thousand provisional designations were given to new Kleť discoveries. Since 1993 targeted follow-up astrometry of Kleť candidates has been performed with a 0.57-m reflector equipped with a CCD camera, and reliable orbits for many previous Kleť discoveries have been determined. The photographic programme results in more than 350 numbered minor planets credited to Kleť, one of the world's most prolific discovery sites. Nearly 50 per cent of them were numbered as a consequence of CCD follow-up observations since 1994.This brief summary describes the results of this Kleť photographic minor planet survey between 1977 and 1996. The majority of the Kleť photographic discoveries are main belt asteroids, but two Amor type asteroids and one Trojan have been found.

A simulated gravity field estimation for the main belt comet 133P/Elst-Pizarro

2021 ◽  
Vol 366 (6) ◽  
Author(s):  
Wutong Gao ◽  
Jianguo Yan ◽  
Weitong Jin ◽  
Chen Yang ◽  
Linzhi Meng ◽  
...  
Keyword(s):  
Gravity Field ◽  
Main Belt ◽  
Field Estimation

scholarly journals New Tools for the Optimized Follow-Up of Imminent Impactors

Universe ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 10
Author(s):  
Maddalena Mochi ◽  
Giacomo Tommei
Keyword(s):  
Orbit Determination ◽  
Main Belt ◽  
Impact Monitoring ◽  
The Earth ◽  
Current Observation ◽  
Short Period ◽  
Fly Eye ◽  
Near Earth Asteroids ◽  
Near Earth Objects

The solar system is populated with, other than planets, a wide variety of minor bodies, the majority of which are represented by asteroids. Most of their orbits are comprised of those between Mars and Jupiter, thus forming a population named Main Belt. However, some asteroids can run on trajectories that come close to, or even intersect, the orbit of the Earth. These objects are known as Near Earth Asteroids (NEAs) or Near Earth Objects (NEOs) and may entail a risk of collision with our planet. Predicting the occurrence of such collisions as early as possible is the task of Impact Monitoring (IM). Dedicated algorithms are in charge of orbit determination and risk assessment for any detected NEO, but their efficiency is limited in cases in which the object has been observed for a short period of time, as is the case with newly discovered asteroids and, more worryingly, imminent impactors: objects due to hit the Earth, detected only a few days or hours in advance of impacts. This timespan might be too short to take any effective safety countermeasure. For this reason, a necessary improvement of current observation capabilities is underway through the construction of dedicated telescopes, e.g., the NEO Survey Telescope (NEOSTEL), also known as “Fly-Eye”. Thanks to these developments, the number of discovered NEOs and, consequently, imminent impactors detected per year, is expected to increase, thus requiring an improvement of the methods and algorithms used to handle such cases. In this paper we present two new tools, based on the Admissible Region (AR) concept, dedicated to the observers, aiming to facilitate the planning of follow-up observations of NEOs by rapidly assessing the possibility of them being imminent impactors and the remaining visibility time from any given station.

scholarly journals PHOTOMETRY OF SELECTED OUTER MAIN BELT ASTEROIDS

2021 ◽  
pp. 105248
Author(s):  
V.G. Shevchenko ◽  
O.I. Mikhalchenko ◽  
I.N. Belskaya ◽  
I.G. Slyusarev ◽  
V.G. Chiorny ◽  
...  
Keyword(s):  
Main Belt

Trajectory Design in the Sun-Earth-Moon System Using Lunar Gravity Assists

1998 ◽  
Vol 35 (2) ◽  
pp. 191-198 ◽  
Author(s):  
Roby S. Wilson ◽  
Kathleen C. Howell
Keyword(s):  
Trajectory Design ◽  
The Sun ◽  
Lunar Gravity ◽  
Moon System ◽  
Gravity Assists

scholarly journals The Castalia mission to Main Belt Comet 133P/Elst-Pizarro

2018 ◽  
Vol 62 (8) ◽  
pp. 1947-1976 ◽  
Author(s):  
C. Snodgrass ◽  
G.H. Jones ◽  
H. Boehnhardt ◽  
A. Gibbings ◽  
M. Homeister ◽  
...  
Keyword(s):  
Main Belt

scholarly journals Dynamical evolution of V-type photometric candidates in the outer main belt

2014 ◽  
Vol 444 (3) ◽  
pp. 2985-2992 ◽  
Author(s):  
M. E. Huaman ◽  
V. Carruba ◽  
R. C. Domingos
Keyword(s):  
Dynamical Evolution ◽  
Main Belt
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