Path coordinates:
Latitude Latitude
Centre Altitude Path Limits
E. Longitude Latitude U.T. star sun Limit 1 Limit 2
........................... shortened .............................
o ' " o ' " h m s o o o ' " o ' "
52 0 0 53 25 12 1 26 8 0 -27 53 49 33 53 1 9
50 0 0 53 34 56 1 26 9 2 -28 53 59 19 53 10 52
48 0 0 53 45 21 1 26 10 3 -30 54 9 45 53 21 15
46 0 0 53 56 25 1 26 11 4 -31 54 20 51 53 32 17
44 0 0 54 8 7 1 26 13 5 -32 54 32 35 53 43 57
42 0 0 54 20 25 1 26 15 6 -33 54 44 55 53 56 13
40 0 0 54 33 18 1 26 18 7 -34 54 57 51 54 9 5
38 0 0 54 46 45 1 26 21 9 -35 55 11 20 54 22 29
36 0 0 55 0 45 1 26 25 10 -36 55 25 22 54 36 26
34 0 0 55 15 14 1 26 29 11 -37 55 39 54 54 50 54
32 0 0 55 30 13 1 26 34 12 -38 55 54 56 55 5 50
30 0 0 55 45 39 1 26 39 13 -39 56 10 25 55 21 14
28 0 0 56 1 32 1 26 44 14 -40 56 26 19 55 37 4
26 0 0 56 17 48 1 26 49 15 -41 56 42 38 55 53 17
24 0 0 56 34 26 1 26 55 16 -42 56 59 19 56 9 53
22 0 0 56 51 25 1 27 2 17 -42 57 16 20 56 26 50
20 0 0 57 8 43 1 27 8 18 -43 57 33 41 56 44 5
18 0 0 57 26 18 1 27 15 19 -44 57 51 19 57 1 38
16 0 0 57 44 9 1 27 22 20 -44 58 9 11 57 19 26
14 0 0 58 2 13 1 27 29 20 -45 58 27 18 57 37 28
12 0 0 58 20 29 1 27 37 21 -45 58 45 36 57 55 42
10 0 0 58 38 55 1 27 45 22 -46 59 4 4 58 14 6
8 0 0 58 57 29 1 27 53 23 -46 59 22 41 58 32 38
6 0 0 59 16 10 1 28 1 23 -47 59 41 23 58 51 17
4 0 0 59 34 55 1 28 9 24 -47 60 0 11 59 10 0
2 0 0 59 53 44 1 28 17 25 -47 60 19 1 59 28 47
0 0 0 60 12 34 1 28 26 25 -47 60 37 53 59 47 36
- 2 0 0 60 31 24 1 28 35 26 -48 60 56 44 60 6 24
- 4 0 0 60 50 12 1 28 43 26 -48 61 15 34 60 25 11
- 6 0 0 61 8 57 1 28 52 27 -48 61 34 20 60 43 55
- 8 0 0 61 27 36 1 29 1 27 -48 61 53 0 61 2 34
- 10 0 0 61 46 10 1 29 10 27 -48 62 11 34 61 21 6
- 12 0 0 62 4 35 1 29 19 28 -48 62 30 0 61 39 31
- 14 0 0 62 22 51 1 29 27 28 -47 62 48 17 61 57 47
........................... shortened .............................
Jan Manek's update
IOTA/IOTA-ES occultation update for
(1794) Finsen / TYC 0154-02070-1 = SAO 114076 on January 20/21, 2002
visible from middle Russia, N Belarus, Lithuania, S Sweden and N Denmark
Summary
In the night of January 20/21, 2002 a 9.8 mag star TYC 0154-02070-1 = SAO 114076 will be occulted by a 43 km asteroid (1794) Finsen. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and Tycho-2 star position.
The updated path shows ~0.3" north shift with time ~1.6 minutes earlier compared to Edwin Goffin's nominal prediction.
The event at one glimpse:
* date and approx. UT time of event: January 21, 2002 @ 01:27 UT (Euro)
* magnitude of target star: 9.8
* magnitude drop [mag]: 5.9
* estimated maximum duration [s]: 3.7
* path description: given above
* Goffin's original chart reference: A02_0160
The occultation path:
* approximate ground width [km]: 90
* uncertainty [path widths]: 5.7
* uncertainty in time [s]: 20
* map: below
* remarks: Path uncertainities are given according to nominal star
position errors and expected asteroid positional accuracy.
Data for the target star:
* name: SAO 114076 = PPM 150784 = TYC 0154-02070-1
* constellation: Monoceros
* J2000 position [h,m,s; o,',"]: 06h 34m 29.6974s; +04o 19' 47.035"
* position source: Tycho-2
* estimated accuracy ["]: 0.06" (0.04", 0.04")
* V mag [mag]: 9.83
* B-V [mag]: +0.85
* remarks:
Target star is in north Monoceros, 2.7 degrees east of 4.4 mag star
epsilon Monocerotis = SAO 113810. Be careful to observe the correct star -
only 2' east of target is a slightly brighter 8.8 mag star SAO 114080
and 4' west of target is close pair (BAL 2671) of 10.2+10.4 mag stars.
Moreover the target star is brighter component of double star BAL 2672,
the fainter component is ~9" north of primary.
Close finding chart (prepared in GUIDE7):
* occulted star is in center - labeled with cross
* field is 2.0x2.0 degrees
* limiting magnitude is 13.0
* labeled stars have indicated SAO numbers
Data for the minor planet:
* general information:
number, name: (1794) Finsen
approx. diameter [km]: 43
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 54 USNO, 2 TMO
number of rejected observations: 7 USNO
time covered by the observations: 1999 07 17 - 2001 12 23
rms residuals ["] (RA,DE): 0.13", 0.20"
estimated positional accuracy at epoch of event ["]: 0.12", 0.12"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 01:30.3 UT
* approx. V mag of minor planet at event [mag]: 15.7
* geocentric parallax of minor planet ["]: 4.092
* magnitude drop [mag]: 5.9
* estimated maximum duration [s]: 3.7
* apparent motion of minor planet ["/h]: 27.09
* angular distance to moon, phase of moon [deg,%]: 75, 44%
* remarks:
Calculator(s): Jan Manek
Path coordinates:
Latitude Latitude
Centre Altitude Path Limits
E. Longitude Latitude U.T. star sun Limit 1 Limit 2
........................... shortened .............................
o ' " o ' " h m s o o o ' " o ' "
44 0 0 52 31 57 1 25 49 5 -32 52 55 13 52 8 57
42 0 0 52 44 8 1 25 51 6 -33 53 7 26 52 21 7
40 0 0 52 56 54 1 25 54 8 -34 53 20 14 52 33 51
38 0 0 53 10 14 1 25 57 9 -36 53 33 35 52 47 8
36 0 0 53 24 5 1 26 1 10 -37 53 47 28 53 0 57
34 0 0 53 38 26 1 26 5 11 -38 54 1 52 53 15 17
32 0 0 53 53 16 1 26 10 12 -39 54 16 44 53 30 5
30 0 0 54 8 34 1 26 15 13 -40 54 32 4 53 45 20
28 0 0 54 24 17 1 26 20 14 -41 54 47 49 54 1 1
26 0 0 54 40 24 1 26 26 15 -42 55 3 59 54 17 6
24 0 0 54 56 54 1 26 32 16 -42 55 20 30 54 33 34
22 0 0 55 13 44 1 26 38 17 -43 55 37 23 54 50 22
20 0 0 55 30 53 1 26 45 18 -44 55 54 34 55 7 29
18 0 0 55 48 19 1 26 52 19 -45 56 12 2 55 24 53
16 0 0 56 6 1 1 26 59 20 -45 56 29 46 55 42 33
14 0 0 56 23 56 1 27 7 21 -46 56 47 44 56 0 26
12 0 0 56 42 4 1 27 14 22 -47 57 5 53 56 18 32
10 0 0 57 0 22 1 27 22 23 -47 57 24 13 56 36 48
8 0 0 57 18 49 1 27 31 24 -48 57 42 42 56 55 13
6 0 0 57 37 22 1 27 39 24 -48 58 1 17 57 13 45
4 0 0 57 56 1 1 27 48 25 -48 58 19 57 57 32 22
2 0 0 58 14 43 1 27 56 26 -49 58 38 41 57 51 3
0 0 0 58 33 28 1 28 5 26 -49 58 57 27 58 9 46
- 2 0 0 58 52 12 1 28 14 27 -49 59 16 12 58 28 30
- 4 0 0 59 10 55 1 28 23 27 -49 59 34 57 58 47 12
- 6 0 0 59 29 36 1 28 32 28 -49 59 53 38 59 5 51
- 8 0 0 59 48 12 1 28 41 28 -49 60 12 15 59 24 27
- 10 0 0 60 6 42 1 28 50 29 -49 60 30 46 59 42 56
- 12 0 0 60 25 5 1 28 60 29 -49 60 49 10 60 1 19
- 14 0 0 60 43 20 1 29 9 29 -49 61 7 24 60 19 33
........................... shortened .............................
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Jan Manek
Stefanik Observatory Private :
Petrin 205 Werichova 950
118 46 Praha 1 152 00 Praha 5 - Barrandov |_|_|
Czech Republic Czech Republic / \
Internet : jan.manek@worldonline.cz |-O-O-|
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