RECON: TNO occultation with 470083

Event between (470083) 06SG369 and star GA1080:01008949 with event index number of 2218824

Geocentric closest approach at 2027/12/05 09:23:50 UTC

J2000 position of star is 05:25:01.8 +18:19:31
Equinox of date position of star is 05:26:26.8 +18:20:43
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 108 degrees from the moon. Moon is 42% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 33.3 AU from the Sun and 32.3 AU from the Earth.
Apparent velocity is 24.3 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 140 seconds.
The 1-sigma cross-track error in the shadow position is 1542 km.
The sky-plane scale is 23445.3 km/arcsec.

The object has an absolute magnitude Hv=7.7
Diameter=178.7 km assuming a 5% albedo -- 7.2 sec chord
Diameter=72.9 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 470083, (2027/12/05 09:26UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.6 +16:33:48  0.8 11.85  96
Alnath         05:28:03.6 +28:37:43  1.6 10.29 108
115 Tau        05:28:48.0 +17:59:01  5.4  0.62 108
PPM 120901     05:25:08.9 +18:37:29  8.4  0.45 107
PPM 120926     05:26:20.8 +18:06:17  9.5  0.26 108
PPM 120928     05:26:28.0 +18:29:37 10.1  0.15 108
470083         05:26:39.9 +18:20:54 16.8       108
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 5.0 sigma about the mid-time.
The median site spacing is 33.5 km RECON observability=1.0 and success probability=13.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:22:33 -48.9 Dark Down 50.0 222.8 Up 09:10:22 - 09:34:45 -1525
Kamloops 09:23:10 -56.6 Dark Down 56.0 202.7 Up 09:10:59 - 09:35:22 -1742
Kelowna 09:23:07 -56.8 Dark Down 56.5 204.6 Up 09:10:56 - 09:35:19 -1815
Peachland 09:23:08 -57.0 Dark Down 56.7 204.2 Up 09:10:56 - 09:35:19 -1827
Summerland 09:23:08 -57.1 Dark Down 56.8 204.5 Up 09:10:56 - 09:35:19 -1840
Penticton 09:23:07 -57.1 Dark Down 56.8 204.7 Up 09:10:56 - 09:35:19 -1846
Oliver 09:23:07 -57.3 Dark Down 57.2 204.9 Up 09:10:55 - 09:35:18 -1880
Anarchist Mountain Observatory 09:23:06 -57.4 Dark Down 57.3 205.3 Up 09:10:55 - 09:35:18 -1895
Victoria 09:23:18 -59.5 Dark Down 58.7 198.7 Up 09:11:06 - 09:35:29 -1955
Okanogan 09:23:07 -57.9 Dark Down 57.9 205.4 Up 09:10:55 - 09:35:18 -1958
Brewster 09:23:07 -58.2 Dark Down 58.2 205.2 Up 09:10:55 - 09:35:18 -1985
Manson/Chelan 09:23:08 -58.5 Dark Down 58.5 204.8 Up 09:10:56 - 09:35:19 -2006
Wenatchee 09:23:08 -59.0 Dark Down 59.0 204.8 Up 09:10:56 - 09:35:19 -2053
Ellensburg 09:23:08 -59.4 Dark Down 59.4 204.7 Up 09:10:56 - 09:35:19 -2094
Yakima 09:23:08 -59.7 Dark Down 59.8 205.0 Up 09:10:57 - 09:35:20 -2133
Toppenish/White Swan 09:23:07 -59.7 Dark Down 59.9 205.4 Up 09:10:56 - 09:35:19 -2154
PNWRO 09:23:03 -59.2 Dark Down 59.8 208.3 Up 09:10:51 - 09:35:14 -2184
The Dalles 09:23:09 -60.7 Dark Down 60.9 204.6 Up 09:10:58 - 09:35:21 -2233
Maupin 09:23:09 -60.9 Dark Down 61.2 205.1 Up 09:10:58 - 09:35:21 -2274
Sisters 09:23:10 -61.8 Dark Down 62.2 204.8 Up 09:10:59 - 09:35:22 -2363
Bend 09:23:09 -61.8 Dark Down 62.3 205.5 Up 09:10:58 - 09:35:21 -2386
Oregon Observatory 09:23:09 -62.0 Dark Down 62.5 205.4 Up 09:10:58 - 09:35:21 -2404
Chiloquin 09:23:10 -63.1 Dark Down 63.8 205.7 Up 09:10:58 - 09:35:21 -2538
Klamath Falls 09:23:10 -63.3 Dark Down 64.1 206.2 Up 09:10:58 - 09:35:21 -2572
Cedarville 09:23:04 -62.8 Dark Down 64.2 210.1 Up 09:10:52 - 09:35:15 -2637
Dunrhomin 09:22:15 -53.5 Dark Down 57.4 236.0 Up 09:10:03 - 09:34:26 -2655
Nikitin 09:22:14 -53.6 Dark Down 57.5 236.2 Up 09:10:02 - 09:34:25 -2674
CU-SBO 09:22:15 -53.6 Dark Down 57.6 236.2 Up 09:10:03 - 09:34:26 -2681
Fall River/Burney 09:23:07 -63.8 Dark Down 65.0 208.1 Up 09:10:56 - 09:35:19 -2691
Gimple 09:23:05 -64.1 Dark Down 65.6 210.1 Up 09:10:54 - 09:35:17 -2782
Greenville 09:23:06 -64.1 Dark Down 65.7 210.0 Up 09:10:54 - 09:35:17 -2782
Quincy 09:23:06 -64.2 Dark Down 65.8 210.2 Up 09:10:54 - 09:35:17 -2803
Portola 09:23:04 -64.0 Dark Down 65.8 211.3 Up 09:10:52 - 09:35:15 -2814
Reno 09:23:02 -63.8 Dark Down 65.7 213.0 Up 09:10:50 - 09:35:13 -2839
Carson City 09:23:01 -64.0 Dark Down 66.0 213.5 Up 09:10:49 - 09:35:12 -2876
Yerington 09:22:59 -63.7 Dark Down 65.9 215.0 Up 09:10:47 - 09:35:10 -2893
Gardnerville 09:23:01 -64.1 Dark Down 66.2 213.9 Up 09:10:50 - 09:35:13 -2901
Hawthorne 09:22:57 -63.6 Dark Down 66.0 216.7 Up 09:10:45 - 09:35:08 -2939
Lee Vining 09:22:58 -64.2 Dark Down 66.7 216.4 Up 09:10:47 - 09:35:10 -3000
Bishop 09:22:55 -64.0 Dark Down 66.8 218.8 Up 09:10:44 - 09:35:07 -3059
Beatty 09:22:49 -63.0 Dark Down 66.4 222.7 Up 09:10:38 - 09:35:01 -3098
Patrick 09:22:38 -61.5 Dark Down 65.7 230.4 Up 09:10:27 - 09:34:50 -3235
Laughlin/Bullhead City 09:22:41 -62.1 Dark Down 66.3 229.6 Up 09:10:29 - 09:34:52 -3267
Lake Havasu City 09:22:39 -62.1 Dark Down 66.6 231.2 Up 09:10:28 - 09:34:51 -3336
George/Scottsdale 09:22:30 -60.4 Dark Down 65.4 236.6 Up 09:10:19 - 09:34:42 -3399
Wildwood 09:22:54 -65.5 Dark Down 69.4 223.7 Up 09:10:43 - 09:35:06 -3405
Idyllwild 09:22:47 -64.2 Dark Down 68.6 228.2 Up 09:10:36 - 09:34:59 -3433
Calipatria 09:22:42 -63.5 Dark Down 68.2 231.6 Up 09:10:31 - 09:34:54 -3490
Yuma 09:22:39 -62.9 Dark Down 67.9 234.1 Up 09:10:27 - 09:34:50 -3530

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 470083, (2027/12/05 09:26UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 11.85  96
Alnath         05:26:17.6 +28:36:23  1.6 10.29 108
115 Tau        05:27:10.1 +17:57:43  5.4  0.62 108
PPM 120901     05:23:30.6 +18:36:03  8.4  0.45 107
PPM 120926     05:24:42.8 +18:04:54  9.5  0.26 108
PPM 120928     05:24:49.7 +18:28:14 10.1  0.15 108
470083         05:25:01.8 +18:19:31 16.8       108
Positions are for J2000

Event circumstances last updated at 2024/03/06 04:35:04 UT

Marc W. Buie, Southwest Research Institute

RECON