"-"

- => => Тема начата: от 02 Март 2006, 19:20:11

Название: (42355) TNO
Отправлено: от 02 Март 2006, 19:20:11
21/22 2006. (42355)

J. Lecacheux PLANOCCULT <planoccult@AULA.COM> 17 2006 .

20 2006 . ( 100 ?) (42355) 2002 CR46. ( 17.5 . . ) 2006 . 59 . . - 236 , 5% , .

, 1.2 m. 0.11" +/- 0.01", 226 . ( ) 1330 +/- 130 .

:

Цитировать
:       jlx@meteores.net <jlx@meteores.net>
:     planoccult@AULA.COM
: 17 2006 ., 0:38:33
:     [PLANOCCULT] Large binary Centaur
--====----====----====----====----
>From J.Lecacheux.

A major member (size ~100 km ?) of the Centaur population has been detected binary by the "Hubble" Space Telescope [read below].

The perihelion (May 2006) of its orbit is at 17.5 AU from the Sun, a bit closer to us than Uranus, and the aphelion at 59 AU within the transneptunian belt. The resulting period is 236 y., by 5 % shorter than the period of Pluto. There are few doubts that this body, like all the Centaurs, is a former TNO dislodged by planetary perturbations, and now in chaotic migration toward the inner Solar System.


=================================================================
Electronic Telegram No. 401
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
......

(42355) 2002 CR_46
 K. S. Noll, Space Telescope Science Institute; W. M. Grundy, Lowell Observatory; D. C. Stephens, Johns Hopkins University; and H. F. Levison, Southwest Research Institute, report the detection of a binary companion to this centaur-type object (MPECs 2002-C84, 2002-H53; MPS 50182) when at 16.68 AU from the earth on Jan. 20.410-20.426 UT with the High Resolution Camera (+ clear filter) of the Advanced Camera for Surveys on the Hubble Space Telescope as part of an ongoing observing program. The minor planet was observed with one 300-sec exposure at each of four dithered positions on the detector. Two components are clearly resolved in each image and in the co-added image. The fainter component is approximately 1.2 magnitudes fainter than the brighter of the two. The two components are separated in the images by an angular distance of 0".11 +/- 0".01, with the fainter component at p.a. 226 degrees as measured from the primary. The spacecraft tracked the motion of (42355) as it moved at an average rate of 0".085/min; the relative position of the two components remained the same during the orbit. The projected separation of the objects in the plane of the sky is 1330 +/- 130 km.
......

2006 February 15      (CBET 401)               Daniel W. E. Green

( 17 2006 .) J. Lecacheux " "!

, 21 22 2006 . 14.2 m ( UCAC2). - - 1100 (. , J. Lecacheux).

, , . , , 60 .

2800 . , .

:

Цитировать
:       jlx@meteores.net <jlx@meteores.net>
:     planoccult@AULA.COM
: 17 2006 ., 16:50:28
:     [PLANOCCULT] Possible occn. by the double Centaur
:    2002CR46.GIF
--====----====----====----====----
>From J.Lecacheux.

I searched for occultations by the 42355 Centaur -just that
one newly identified as double- in the 2006.1-2010.0 interval.

I found none, excepted a near miss on 2006 March 21.99, i.e. only one month ahead :

The occultation of the faint rUCAC= 14.2 star 2UCAC 36297026 should miss the Earth by ~ 1100 km, but a modest 0".2 shift (i.e. about one AstDys sigma) toward the south-west would be able to put the occultation path across central Europe between 23:40 and 23:43 UT ( some minutes).

Note that the HST measured 1330 km between the primary and the satellite at the discovery instant. This distance should vary between unknown limits because of the orbital motion of the asteroidal satellite, but nevertheless this is comparable to the above miss distance to the Earth.

Possible occultation duration : 6-12 seconds, if the size of the body is in the 100-200 km range as it is currently estimated.

I think that the best-equipped observers in Europe should try this uncertain and difficult event.

, 14.2 m.

, J. Lecacheux , .

. .

? -, 2002 CR46. ( OrbFit , , , .)

-, 2002 CR46, . , , 0.452" 0.232".

"-", ? , , 2002 CR46 : , . - 19.7 m.

http://www.kadar.ru/forum/index.php/topic,38.msg300.html#msg300 , 14" MEADE 18-19 m. , " , ,     2-3m  " (http://www.kadar.ru/forum/index.php/topic,38.msg304.html#msg304 ). " , 2-3 . " (. , http://www.kadar.ru/forum/index.php/topic,38.msg374.html#msg374 ). (http://www.kadar.ru/forum/index.php/topic,38.msg333.html#msg333 ), 1 "0,43 . 3.5 ".

2006 . 2002 CR46 0.104 0.082 , , 5 . ( "-" 5- ?) , 5 , .

5 20-21 m. , , .

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2002 CR46

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La Silla 21/22 2006 . PLANOCCULT:

Цитировать
:       Raoul Behrend <Raoul.Behrend@obs.unige.ch>
:     PlanOccult <planoccult@aula.com>, Steve Preston <stevepr@acm.org>, Jan Manek <jan.manek@worldonline.cz>, Eric Frappa <frappa@euraster.net>
: 2 2006 ., 2:36:13
:     [PLANOCCULT] (42355) - Preoccultation
--====----====----====----====----
TYP TNO
COD 809
COM Based on image(s) obtained at La Silla Observatory
CON R. Behrend, Geneva Observatory, CH-1290 Sauverny, Switzerland
CON [raoul.behrend@obs.unige.ch]
OBS S. Udry, Ch. Vuissoz, R. Behrend
MEA R. Behrend
TEL 1.20-m f/12 reflector + CCD
ACK (42355) - Preoccultation
AC2 christel.vuissoz@epfl.ch, raoul.behrend@obs.unige.ch
GNT Laboratoire d'astrophysique de l'Ecole polytechnique fdrale de Lausanne
NET UCAC-2
42355         C2006 03 01.06029310 06 19.905+12 41 52.74         19.6 R      809
42355         C2006 03 01.10638710 06 19.453+12 41 54.97         19.8 R      809
Название: Re: 21/22 2006. (42355)
Отправлено: maxim от 02 Март 2006, 19:59:59
"-", ? , , 2002 CR46 : , . - 19.7 m.

2006 . 2002 CR46 0.104 0.082 , , 5 . ( "-" 5- ?)

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      .
Название: Re: 21/22 2006. (42355)
Отправлено: ctac от 02 Март 2006, 22:15:50
 ! , (http://www.kadar.ru/forum/index.php/topic,148.msg1858.html#msg1858): .

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Название: Re: 21/22 2006. (423
Отправлено: Starcat от 02 Март 2006, 22:39:45
, !

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Название: Re: 21/22 2006. (423
Отправлено: Starcat от 02 Март 2006, 22:42:03
?..
Название: Re: 21/22 2006.
Отправлено: от 03 Март 2006, 15:51:41
! , (http://www.kadar.ru/forum/index.php/topic,148.msg1858.html#msg1858): .

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: 454.9 mas, 236.1 mas, 112.8 .

V=14.514 +/- 0.061 m (M2000: Bordeaux Carte du Ciel zone +11<Dec<+18 , Rapaport+, 2001); Ptg=14.38 m (The HST Guide Star Catalog, Version 1.2, Lasker+ 1996).

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Название: Re: 21/22 2006.
Отправлено: от 06 Март 2006, 14:18:55
3 2006 . (42355) 2002 CR46 La Silla. , .

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7.25 m. : - 102 , - 59 .

160 ( ), 4%. ( , , , ), 241 . ("") - 2355 . ( "") - 320 .

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RA = 10 03 15.4181928
DE = 12 57' 11.554064"



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 1757 3% 60 36.0 56 51.0 23 40.6 14 -18
 1740 3% () 59 30.0 56 59.7 23 40.6 15 -19
 1734 3% 50 48.7 61 40.0 23 41.2 19 -19
 1709 3% 56 15.0 58 0.0 23 40.7 16 -20
 1697 3% 61 24.0 55 10.0 23 40.4 13 -19
 1605 3% 40 32.0 64 34.0 23 41.6 22 -20
 1573 3% 49 42.0 58 33.0 23 40.8 20 -22
 1541 3% 55 56.0 54 44.0 23 40.4 17 -22
 1419 3% 52 28.5 54 11.8 23 40.3 19 -24
 1410 3% (. . ) 48 48.9 55 50.3 23 40.6 20 -24
 1347 4% 55 3.0 51 47.0 23 40.1 17 -24
 1342 4% 39 54.0 59 13.0 23 41.1 24 -25
 1323 4% 34 21.6 61 46.8 23 41.4 26 -24
 1310 4% 48 23.2 54 19.3 23 40.4 21 -25
 1300 4% 50 14.1 53 15.3 23 40.3 20 -25
 1300 4% 44 0.3 56 19.6 23 40.7 23 -26
 1266 4% () 32 40.8 61 35.4 23 41.5 27 -25
 1253 4% 39 52.0 57 37.0 23 40.9 25 -26
 1200 4% 39 9.0 57 5.5 23 40.9 25 -27
 1124 4% (-) 29 46.9 60 31.9 23 41.4 29 -26
 1118 4% 37 10.0 56 44.0 23 40.9 27 -28
 1086 4% 35 53.9 56 50.9 23 40.9 27 -28
 1082 4% ( ) 37 57.9 55 45.8 23 40.8 26 -28
 1104 4% - 30 17.7 59 56.5 23 41.4 29 -27
 1095 4% 30 19.6 59 46.3 23 41.4 29 -27
 1066 4% 39 45.2 54 38.1 23 40.6 26 -29
 1065 4% () 37 33.3 55 42.2 23 40.8 27 -29
 1065 4% 37 32.7 55 42.0 23 40.8 27 -29
 1061 4% ( .) 35 33.2 56 37.4 23 40.9 27 -28
 1061 4% 40 28.2 54 12.6 23 40.6 26 -29
 1053 4% 46 6.0 51 24.2 23 40.2 23 -28
 1051 4% () 36 57.3 55 46.3 23 40.8 27 -29
 1047 4% 31 17.0 58 31.0 23 41.2 29 -28
 1046 4% "-" 37 53.0 55 14.9 23 40.7 27 -29
 1040 4% 36 45.6 55 42.0 23 40.8 27 -29
958 4% () 24 57.3 60 9.7 23 41.6 31 -28
908 4% 28 17.9 57 49.0 23 41.2 31 -29
886 4% 27 36.8 57 48.8 23 41.3 31 -29
880 4% () 26 28.0 58 16.0 23 41.3 31 -29
842 4% 39 13.0 51 39.8 23 40.3 27 -31
830 4% 36 6.0 52 58.2 23 40.5 28 -31
821 4% 32 3.0 54 46.0 23 40.8 30 -31
790 4% 44 33.8 48 30.9 23 39.9 24 -31
784 4% () 30 19.6 55 3.7 23 40.9 31 -31
740 4% "-1" (.) 30 19.0 54 27.5 23 40.9 31 -32
739 4% () 30 13.6 54 29.4 23 40.9 31 -32
711 4% 24 7.0 56 57.1 23 41.3 33 -31
610 4% () 30 57.6 52 27.0 23 40.7 31 -33
609 4% 36 13.9 50 0.2 23 40.3 29 -34
607 4% () 26 52.0 54 17.5 23 41.0 33 -33
605 4% () 27 37.6 53 55.4 23 40.9 33 -33
595 4% () 28 12.4 53 31.1 23 40.8 33 -33
581 4% 25 17.2 54 41.0 23 41.1 34 -33
522 4% () 10 45.1 60 12.7 23 42.1 36 -29
512 4% -- 39 42.8 47 14.2 23 39.9 28 -34
505 4% 37 49.8 48 0.0 23 40.0 29 -35
436 4% 35 2.7 48 26.1 23 40.1 30 -35
433 4% 30 29.9 50 27.2 23 40.5 32 -35
423 4% () 30 0.0 50 34.0 23 40.5 33 -35
415 4% () 29 32.0 50 41.0 23 40.5 33 -35
413 4% 20 30.0 54 42.6 23 41.2 36 -34
411 4% 41 59.4 45 3.0 23 39.6 26 -35
410 4% 40 7.4 45 51.1 23 39.8 28 -35
405 4% () 26 4.4 52 7.3 23 40.8 34 -35
389 4% 35 11.0 47 49.0 23 40.1 30 -36
367 4% () 58 21.1 37 57.4 23 38.7 15 -29
344 4% 38 56.7 45 37.0 23 39.8 28 -36
289 4% () 49 51.0 40 23.0 23 39.0 21 -34
293 4% 38 58.6 45 2.0 23 39.7 29 -36
277 4% 42 30.6 43 16.2 23 39.4 26 -36
268 4% Π 41 26.5 43 39.2 23 39.5 27 -36
262 4% 39 59.7 44 13.4 23 39.6 28 -37
245 4% 37 59.9 44 55.5 23 39.7 29 -37
225 4% () 21 4.2 52 12.8 23 41.0 37 -36
221 4% 44 48.0 41 43.2 23 39.2 25 -36
218 4% 37 46.3 44 43.4 23 39.7 29 -37
213 4% () 12 34.6 55 41.2 23 41.7 39 -34
188 4% () 39 56.2 43 26.9 23 39.5 28 -37
147 4% () 42 49.4 41 45.3 23 39.3 26 -37
130 4% 24 1.8 49 50.0 23 40.7 36 -38
120 4% *** - ***
109 4% () 30 48.4 46 36.7 23 40.1 34 -38
95 4% 30 45.5 46 28.6 23 40.1 34 -39
70 4% 44 17.5 40 20.1 23 39.1 25 -37
62 4% 28 52.0 46 57.4 23 40.2 35 -39
34 4% 33 32.0 44 36.0 23 39.9 32 -39
0 4% **** ****
-61 4% () 13 6.4 52 24.4 23 41.4 41 -37
 -112 4% () 51 26.0 35 40.0 23 38.6 20 -35
 -120 4% *** - ***
 -232 4% () 14 23.7 50 4.6 23 41.2 42 -39
 -293 4% () 19 3.9 47 29.1 23 40.7 40 -41
 -298 4% () 26 5.8 44 24.8 23 40.1 37 -42
 -333 4% () 16 20.2 48 13.9 23 40.9 42 -41
 -381 4% () 4 54.3 52 20.6 23 41.8 44 -37
 -470 4% () 32 46.8 39 50.6 23 39.5 34 -43
 -502 4% () 20 30.8 44 48.2 23 40.4 41 -43
 -597 4% () 23 20.8 42 41.0 23 40.1 40 -44
 -652 4% () 44 26.0 33 20.0 23 38.5 26 -41
 -662 4% () -0 10.0 51 30.0 23 42.0 47 -38
 -849 4% () 2 20.2 48 50.2 23 41.7 48 -41
 -908 4% () 30 20.0 36 49.5 23 39.3 37 -47
-1008 4% () 36 15.0 33 30.0 23 38.8 32 -46
-1147 4% () 34 59.3 32 49.0 23 38.8 34 -48
-1180 4% () 12 27.1 41 55.3 23 40.7 47 -47
-1243 4% - () 34 47.3 32 5.2 23 38.8 34 -48
-2115 3% () -3 41.1 40 24.6 23 41.7 57 -48
-2592 2% () -9 11.2 38 42.7 23 42.0 61 -48

Название: Re: 21/22 2006. (42355)
Отправлено: Starcat от 13 Март 2006, 12:39:31
!
4-5 - . :) - 18-19 , .
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17 - . :) - .
Название: Re: 21/22 2006. (42355)
Отправлено: от 13 Март 2006, 14:08:42
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14 2006 . , 28 1989 . 01 2006 . - . , 03 2006 .

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