RECON: TNO occultation with 47932

Event between (47932) 00GN171 and star GA0560:22043830 with event index number of 2316330

Geocentric closest approach at 2027/07/27 04:06:50 UTC

J2000 position of star is 17:36:06.7 -32:59:14
Equinox of date position of star is 17:37:43.1 -33:00:03
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 135 degrees from the moon. Moon is 45% illuminated.
Apparent brightness V=21.2

[RECON map]
Object is 30.3 AU from the Sun and 29.5 AU from the Earth.
Apparent velocity is 17.1 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 411 seconds.
The 1-sigma cross-track error in the shadow position is 2427 km.
The sky-plane scale is 21369.9 km/arcsec.

The object has an absolute magnitude Hv=6.3
Diameter=346.7 km assuming a 5% albedo -- 19.6 sec chord
Diameter=141.6 km assuming a 30% albedo -- 8.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 47932, (2027/07/27 04:07UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.1 -26:29:26  0.9 15.87 150
34Ups Sco      17:32:38.5 -37:18:54  2.7  4.45 135
PPM 296449     17:33:36.5 -33:43:18  6.4  1.15 136
PPM 296553     17:38:05.2 -33:19:18  8.4  0.32 135
PPM 296541     17:37:42.0 -33:09:52  9.0  0.17 135
47932          17:37:55.3 -33:00:09 16.9       135
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 2.2 sigma about the mid-time.
The median site spacing is 23.0 km RECON observability=0.1 and success probability=1.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:08:13 -8.4 NT Down 4.9 177.2 Really Low 03:53:13 - 04:23:13 3730
Dunrhomin 04:08:10 -17.4 AT Down 16.7 177.8 Really Low 03:53:10 - 04:23:10 3490
Nikitin 04:08:10 -17.5 AT Down 16.9 177.8 Really Low 03:53:10 - 04:23:10 3484
CU-SBO 04:08:10 -17.5 AT Down 17.0 177.7 Really Low 03:53:10 - 04:23:10 3480
Kelowna 04:09:07 -3.6 CT Down 5.9 166.1 Really Low 03:54:07 - 04:24:07 3435
Kamloops 04:09:08 -2.7 CT Down 4.9 165.3 Really Low 03:54:08 - 04:24:08 3430
Penticton 04:09:07 -3.7 CT Down 6.2 166.0 Really Low 03:54:07 - 04:24:07 3426
Peachland 04:09:07 -3.5 CT Down 5.9 165.8 Really Low 03:54:07 - 04:24:07 3426
Summerland 04:09:07 -3.6 CT Down 6.1 165.9 Really Low 03:54:07 - 04:24:07 3425
Anarchist Mountain Observatory 04:09:06 -4.1 CT Down 6.7 166.1 Really Low 03:54:06 - 04:24:06 3420
Oliver 04:09:07 -3.9 CT Down 6.5 166.0 Really Low 03:54:07 - 04:24:07 3419
Okanogan 04:09:08 -4.4 CT Down 7.3 165.9 Really Low 03:54:08 - 04:24:08 3400
Brewster 04:09:10 -4.5 CT Down 7.5 165.8 Really Low 03:54:10 - 04:24:10 3389
Manson/Chelan 04:09:10 -4.4 CT Down 7.7 165.4 Really Low 03:54:10 - 04:24:10 3375
PNWRO 04:09:08 -6.2 NT Down 9.7 166.4 Really Low 03:54:08 - 04:24:08 3359
Wenatchee 04:09:12 -4.6 CT Down 8.1 165.3 Really Low 03:54:12 - 04:24:12 3359
Ellensburg 04:09:14 -4.7 CT Down 8.5 165.1 Really Low 03:54:14 - 04:24:14 3343
Yakima 04:09:14 -4.9 CT Down 8.8 165.1 Really Low 03:54:14 - 04:24:14 3332
Toppenish/White Swan 04:09:13 -5.1 CT Down 9.1 165.2 Really Low 03:54:13 - 04:24:13 3330
Victoria 04:09:23 -2.3 CT Down 6.5 162.8 Really Low 03:54:23 - 04:24:23 3306
The Dalles 04:09:17 -5.1 CT Down 9.7 164.5 Really Low 03:54:17 - 04:24:17 3288
Maupin 04:09:18 -5.4 CT Down 10.1 164.6 Really Low 03:54:18 - 04:24:18 3279
Sisters 04:09:21 -5.6 CT Down 10.9 164.2 Really Low 03:54:21 - 04:24:21 3239
Bend 04:09:21 -5.9 CT Down 11.2 164.4 Really Low 03:54:21 - 04:24:21 3239
Oregon Observatory 04:09:21 -6.0 CT Down 11.3 164.2 Really Low 03:54:21 - 04:24:21 3230
Cedarville 04:09:17 -8.0 NT Down 13.8 165.2 Really Low 03:54:17 - 04:24:17 3188
Chiloquin 04:09:24 -6.4 NT Down 12.5 163.8 Really Low 03:54:24 - 04:24:24 3176
Klamath Falls 04:09:23 -6.7 NT Down 12.8 163.9 Really Low 03:54:23 - 04:24:23 3166
Fall River/Burney 04:09:24 -7.6 NT Down 14.0 164.1 Really Low 03:54:24 - 04:24:24 3135
Reno 04:09:18 -9.4 NT Down 15.8 165.3 Really Low 03:54:18 - 04:24:18 3125
Yerington 04:09:15 -10.1 NT Down 16.5 165.8 Really Low 03:54:15 - 04:24:15 3122
Hawthorne 04:09:14 -10.7 NT Down 17.0 166.2 Really Low 03:54:14 - 04:24:14 3119
Patrick 04:08:53 -15.6 AT Down 20.8 170.1 Low 03:53:53 - 04:23:53 3118
Gimple 04:09:22 -8.4 NT Down 15.0 164.5 Really Low 03:54:22 - 04:24:22 3117
Portola 04:09:21 -8.8 NT Down 15.4 164.8 Really Low 03:54:21 - 04:24:21 3116
Greenville 04:09:23 -8.4 NT Down 15.0 164.4 Really Low 03:54:23 - 04:24:23 3115
Carson City 04:09:18 -9.6 NT Down 16.1 165.3 Really Low 03:54:18 - 04:24:18 3112
Quincy 04:09:23 -8.5 NT Down 15.2 164.4 Really Low 03:54:23 - 04:24:23 3107
Beatty 04:09:05 -12.9 AT Down 18.9 167.7 Really Low 03:54:05 - 04:24:05 3104
Gardnerville 04:09:18 -9.8 NT Down 16.4 165.3 Really Low 03:54:18 - 04:24:18 3103
George/Scottsdale 04:08:43 -17.9 AT Down 22.8 171.7 Low 03:53:43 - 04:23:43 3093
Laughlin/Bullhead City 04:08:55 -15.3 AT Down 21.0 169.5 Low 03:53:55 - 04:23:55 3088
Lee Vining 04:09:16 -10.8 NT Down 17.5 165.8 Really Low 03:54:16 - 04:24:16 3083
Bishop 04:09:13 -11.6 NT Down 18.2 166.4 Really Low 03:54:13 - 04:24:13 3078
Lake Havasu City 04:08:55 -15.9 AT Down 21.7 169.6 Low 03:53:55 - 04:23:55 3065
Yuma 04:08:57 -16.8 AT Down 23.4 169.2 Low 03:53:57 - 04:23:57 2973
Calipatria 04:09:01 -15.9 AT Down 22.8 168.5 Low 03:54:01 - 04:24:01 2969
Idyllwild 04:09:07 -14.8 AT Down 22.0 167.5 Low 03:54:07 - 04:24:07 2966
Wildwood 04:09:16 -13.3 AT Down 21.3 165.9 Low 03:54:16 - 04:24:16 2927

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 47932, (2027/07/27 04:07UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.87 150
34Ups Sco      17:30:45.8 -37:17:46  2.7  4.45 135
PPM 296449     17:31:47.3 -33:42:12  6.4  1.15 136
PPM 296553     17:36:16.3 -33:18:23  8.4  0.32 135
PPM 296541     17:35:53.3 -33:08:56  9.0  0.17 135
47932          17:36:06.7 -32:59:14 16.9       135
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:27:38 UT

Marc W. Buie, Southwest Research Institute

RECON