N.35 perozzi resonant-encounters-with-neas
16
RESONANT ENCOUNTERS WITH NEAS when a suggestion really matters ettore perozzi Space Academy Foundation Telespazio alessandro rossi ISTI-CNR giovanni valsecchi INAF-IASF
description
Talk of the "International Workshop on Paolo Farinella (1953-2000): the Scientists, the man", Pisa, 14-16 June 2010
Transcript of N.35 perozzi resonant-encounters-with-neas
RESONANT ENCOUNTERS WITH NEAS
when
a suggestion
really
matters
ettoreperozzi
Space
Academy
Foundation
Telespazio
alessandrorossi
ISTI-CNR
giovannivalsecchi
INAF-IASF
Prologue: SMART-1 AsteroidOption
Observatoirede Paris, Meudon, Spring1998
FIND A
TRAJECTORY TO
ASTEROID X
YZZY !
SM
AR
T-1
scie
nce
team
ES
OC
mis
sion
an
aly
sis
team
SM
AR
T-1
scie
nce
team
ES
OC
mis
sion
an
aly
sis
team
NO
WA
Y,
FO
RG
ET
IT
! N
OT
EN
OU
GH
D
ELT
A-V
Prologue: SMART-1 AsteroidOption
Observatoirede Paris, Meudon, Spring1998
SM
AR
T-1
scie
nce
team
ES
OC
mis
sion
an
aly
sis
team
TRY
AGAIN !
Prologue: SMART-1 AsteroidOption
Observatoirede Paris, Meudon, Spring1998
(*)
M. H
ech
ler,
J.L
.Ca
no
, A
.Ya
nez
: SM
AR
T-1
Mis
sion
Analy
sis:
Ast
eroid
Op
tio
n. M
AS
WP
403
, 19
98
SM
AR
T-1
scie
nce
team
ES
OC
mis
sion
an
aly
sis
team
It s
hou
ld b
e no
ted
th
at i
n th
is p
aper
a ‘p
osit
ive
appr
oach
’of
cons
truc
ting
mis
sion
s h
as b
een
take
n.
Th
is m
eth
od i
s no
t w
ell
suit
ed t
o ex
lud
e th
e ex
iste
nce
of a
cer
tain
typ
e of
mis
sion
. It
can
only
be
stat
ed t
hat
su
ch m
issi
on h
as n
ot b
een
foun
d.
On
the
oth
er h
and
th
is c
an b
e ta
ken
as a
str
ong
ind
icat
ion
of n
on-e
xis
tenc
e(*
)
Prologue: SMART-1 AsteroidOption
Observatoirede Paris, Meudon, Spring1998
SM
AR
T-1
scie
nce
team
ES
OC
mis
sion
an
aly
sis
team
!
Prologue: SMART-1 AsteroidOption
Observatoirede Paris, Meudon, Spring1998
Why
don
’t y
ou l
ook
for
NE
As
in r
eson
ant
orb
its
wit
h t
he
Ear
th s
o th
at r
epea
ted
fly
bys
can
be
ach
ieve
d?
Paol
o F
arin
ella
, pri
vate
com
mun
icat
ion,
19
98
Why
don
’t y
ou l
ook
for
NE
As
in r
eson
ant
orb
its
wit
h t
he
Ear
th s
o th
at r
epea
ted
fly
bys
can
be
ach
ieve
d?
Paol
o F
arin
ella
, pri
vate
com
mun
icat
ion,
19
98
Ma
rin
er
10
Merc
ury
fly
bys
: 1973
, 1973
, 1974
MERCURY RESONANT FLYBYs
Why
don
’t y
ou l
ook
for
NE
As
in r
eson
ant
orb
its
wit
h t
he
Ear
th s
o th
at r
epea
ted
fly
bys
can
be
ach
ieve
d?
Paol
o F
arin
ella
, pri
vate
com
mun
icat
ion,
19
98
RESONANT ENCOUNTERS WITH NEAs
(15
66)
Ica
rus
2.9
km
/sec
40
8 d
ay
se
lon
ga
ted
, fa
st
rota
tor
(16
20)
Ge
og
rap
ho
s3
.7 k
m/s
ec
50
7 d
ay
sla
rge s
ize,
hig
hly
elo
ng
ate
d
(20
63)
Ba
cc
hu
s2
.4 k
m/s
ec
40
9 d
ay
sla
rge C
-ty
pe
19
94
AW
12
.4 k
m/s
ec
42
4 d
ay
sb
ina
ry
1:1
me
an
mo
tio
n r
es
on
an
ce
be
twe
en
th
e o
rbit
o
f th
e
en
co
un
teri
ng
s
pa
ce
cra
ft
an
d
tha
t o
f th
e
targ
et
as
tero
id
ze
ro
inc
lin
ati
on
tr
an
sfe
r tr
aje
cto
ry
to
the
a
ste
roid
no
de
,
targ
ets
w
ith
n
od
al
dis
tan
ce
c
los
e
to
1
AU
a
nd
pe
rio
ds
of
rev
olu
tio
n n
ot
mu
ch
la
rge
r th
an
on
e y
ea
r,
in o
rde
r to
a
llo
w a
s
uff
icie
ntl
y s
ho
rt ti
me
b
etw
ee
n
su
bs
eq
ue
nt
fly
by
s
La
un
ch
da
te w
ith
in 2
00
5-2
00
9
esa
F2/F
3 s
ele
cti
on
2000
The NEARER MISSION
The NEARER MISSION
ES
A P
ha
se
-A s
tud
ies
2003
SIMONE
Sm
all
Inte
rce
pt
Mis
sio
nto
Ob
jec
tsN
ea
r-E
art
h
MA
RS
γ
asteroid
asteroid
asteroid
asteroid
(35
54
) A
mu
nT
ax
on
om
icM
-ty
pe
(m
eta
llic
)
bo
thn
od
al
dis
tan
ce
s a
re a
cc
es
sib
le
H-p
lot
∆ ∆∆∆
v
= 1
1.6
km
/se
c
Re
vo
luti
on
pe
rio
d=
0.9
6 y
ea
rs
Se
mim
ajo
ra
xis
clo
se
to
th
e e
cli
pti
c
Sy
no
dic
pe
rio
d=
24
ye
ars
element
value
1-sigma
variation
a (AU)
0.973586
8.389e-08
eccentricity
0.280375
8.394e-07
inclination
(deg)
23.364
7.371e-05
Asc. node
(deg)
358.688
3.017e-05
Arg. perih.
(deg)
359.355
0.000129 8
M (deg)
249.576
0.000805 1
SIMONE
Th
e c
as
e f
or
AM
UN
dsc
en
din
g n
od
e f
irs
t
depart
ure
05
/08
/20
07
first
flyby
19
/04
/20
09
trave
l tim
e6
22
.7 d
ays
rela
tive
velo
city
9.1
km
/sec
final m
ass
98
.5 k
g
∆V
4.8
7 k
m/s
ec
DO
UB
LE
re
so
na
nt
flyb
y m
iss
ion
: a
sc
en
din
ga
nd
de
sc
en
din
gn
od
e
1:1
reso
nan
to
rbit
: fl
yb
ys
eve
ryh
alf
Am
un
pe
rio
d(a
bo
ut
6 m
on
ths
)
SIM
ON
E p
rop
osal2003
SIMONE
A r
es
on
an
tfl
yb
y m
iss
ion
toA
mu
n
E. P
ero
zzi, L
. C
asalin
o, G
. C
ola
su
rdo
, A
. R
ossi an
d G
.B. V
als
ecch
i: R
eso
nan
t F
lyb
y M
issio
ns t
o N
ear-
Eart
h A
ste
roid
s.
Cele
sti
al
Mech
an
ics a
nd
Dyn
am
ical A
str
on
om
y 8
3, 49-6
2, 2002.
E. P
ero
zzi, A
. R
ossi, G
.B. V
als
ecch
i, T
he s
ele
cti
on
of
NE
A t
arg
ets
for
the A
RO
S a
nd
NE
AR
ER
mis
sio
ns,
In p
roc
“P
lan
eta
ryS
cie
nce:
Th
ird
Italian
Meeti
ng
”2
000
meanmotionresonancesof order1
p
____
_
p+
q
OR
PH
EU
S
Ja
n 2
002
Ap
ril
20
03
He
ch
ler
et
al 1998
Ja
n 2
006
Ma
y 2
00
7La
ge
rkvis
t
et
al 2000
RESONANT LAUNCH WINDOWS
MITIGATION?
ESA Space
Situational
Awareness
Program
-NEO Segment
Why
don
’t y
ou l
ook
for
NE
As
in r
eson
ant
orb
its
wit
h t
he
Ear
th s
o th
at r
epea
ted
fly
bys
can
be
ach
ieve
d?
Paol
o F
arin
ella
, pri
vate
com
mun
icat
ion,
19
98
!
So
di e
sse
re d
i n
atu
ra m
ort
ale
,
ma
qu
an
do
tra
ccio
le
tra
iett
ori
e
de
i co
rpi ce
lesti i m
iei p
ied
i si
so
lleva
no
da
te
rra
e m
i e
levo
alla
pre
se
nza
di Z
eu
s n
utr
en
do
mi d
i a
mb
rosia
, il
cib
o d
eg
li d
ei.
I kn
ow
tha
tI
am
mo
rta
lin
na
ture
, a
nd
ep
he
me
ral, b
ut
wh
en
I tr
ace
at
my
ple
asu
reth
e w
ind
ing
sto
an
d f
roo
fth
e h
ea
ve
nly
bo
die
sI
no
lo
ng
er
tou
ch
ea
rth
with
my
fee
t: I
sta
nd
in
th
e p
rese
nce
of
Ze
us h
imse
lfa
nd
ta
ke
my
fill
of
am
bro
sia
, fo
od
of
the
Go
ds.
ΚλαύδιοςΠτολεµαῖος,
Ma
them
ati
keSin
taxi
s
