§ 1.9 - Specific NEO targets and missions

Our table below lists the requirements for missions to particular asteroids in the published literature. There are probably many more analyses which are unpublished to date. If you know of any, please forward the information or source to us.

A list of NEO's can be found at http://cfa-www.harvard.edu/iau/lists/Unusual.html though that site does not give delta-v analysis for missions, and is not interested in such issues. (As of July 2001, their tables were still not formatted.) This list may be useful for calculating transport requirements, and checking to see if anyone's analyzed these targets for potential missions.

Another issue is an educated guess about the properties of the target as analyzed by telescopic spectroscopy. Is there a source on the internet for this data? Shall we do it here?

The following are a list of particularly interesting asteroids:

Target

Outbound
delta-v
from LEO
(m/s)

Outbound
delta-t
(days)

Date

Inbound
delta-v
(m/s)

Inbound
Delta-t
(days)

Date

Total
delta-v
to HEEO
(m/s)

Total
Delta-t

Lunar
gravity
assist?

Source

Comments

Moon

6000

3

any

2500

1

any

8500

short

n.a.

Phobos-Deimos

4400

270

biannual

1800

270

biannual

6200

540

Scarbrough (1999)

Mars

4800

270

biannual

5700

270

biannual

10,500

540

Scarbrough (1999)

1982 DB Nereus

4450

210

60

480

4510

690

Lewis & Lewis (1987)

From Scarbrough. C? type from spectra?

1982 XB

5300

220

220

470

5770

690

Lewis & Lewis (1987)

From Scarbrough

1982 HR

5300

180

260

320

5560

500

Lewis & Lewis (1987)

From Scarbrough

1980 AA

5270

390

390

290

5660

680

Lewis & Lewis (1987)

From Scarbrough

1998 KY26

small

small

small

small

Ostro

30 m diameter, water rich from radar data

1991 JW

6873

fast

2009-12-05

4705

fast

2009-11-18

10.89

190

T.D. Jones et al. (1994)

Human mission to/from surface, not HEEO

1979 VA Wilson-Harrington

~ 5 years

Kuck

Comet in 1949

Notes: Gaps in the table need to be filled in. Trip times can be improved at the cost of delta-v. Delta-v varies for dates with NEOs with large cycles. Future changes may eliminate the column on source, turn it into superscripts in other columns, once we get multiple sources

A table comparison is only a rough comparison. The context and details of each one of these cases needs to be discussed. For example, the mission to 1991 JW was optimized to minimize travel time due to human missions, and the return delta-v is to Earth's surface, not to HEEO as the table column states. It's worth pointing out that the total delta-v is less than to the lunar surface. It is suggested that this be a steppingstone mission to Mars in the NASA program, rather than a "return to the Moon" as a steppingstone.


This page was last updated: 30 July 2001

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Projects to Employ Resources of the Moon and Asteroids Near Earth in the Near Term