RECON: TNO occultation with 552678

Event between (552678) 10JG210 and star GA0760:25083388 with event index number of 2805959

Geocentric closest approach at 2029/08/06 07:56:10 UTC

J2000 position of star is 19:53:05.1 -13:54:24
Equinox of date position of star is 19:54:22.4 -13:50:45
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 149 degrees from the moon. Moon is 16% illuminated.
Apparent brightness V=20.8

[RECON map]
Object is 17.2 AU from the Sun and 16.2 AU from the Earth.
Apparent velocity is 20.9 km/sec on the sky relative to the star, or, 6.4 arcsec/hr.
The 1-sigma error in the time of the event is 249 seconds.
The 1-sigma cross-track error in the shadow position is 3137 km.
The sky-plane scale is 11758.2 km/arcsec.

The object has an absolute magnitude Hv=8.5
Diameter=114.3 km assuming a 5% albedo -- 5.6 sec chord
Diameter=46.7 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 552678, (2029/08/06 07:56UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:16.6 -29:27:52  1.2 45.30 112
Nunki          18:57:05.9 -26:15:26  2.0 18.35 165
PPM 236528     19:50:28.8 -12:14:37  6.5  1.89 149
PPM 236650     19:55:22.5 -14:05:43  8.5  0.31 149
PPM 236635     19:54:44.6 -13:38:36  9.6  0.18 149
552678         19:54:44.7 -13:49:41 15.7       149
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 3.6 sigma about the mid-time.
The median site spacing is 20.1 km RECON observability=1.0 and success probability=4.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:53:35 -22.7 Dark Down 24.1 195.9 Low 07:38:35 - 08:08:35 7299
Victoria 07:53:44 -24.6 Dark Down 26.7 192.9 Low 07:38:44 - 08:08:44 7282
Peachland 07:53:34 -23.6 Dark Down 24.9 196.6 Low 07:38:34 - 08:08:34 7230
Kelowna 07:53:34 -23.5 Dark Down 24.7 196.9 Low 07:38:34 - 08:08:34 7227
Summerland 07:53:33 -23.8 Dark Down 25.0 196.7 Low 07:38:33 - 08:08:33 7219
Penticton 07:53:32 -23.8 Dark Down 25.1 196.9 Low 07:38:32 - 08:08:32 7212
Oliver 07:53:33 -24.2 Dark Down 25.4 196.9 Low 07:38:33 - 08:08:33 7192
Anarchist Mountain Observatory 07:53:32 -24.4 Dark Down 25.5 197.1 Low 07:38:32 - 08:08:32 7176
Okanogan 07:53:33 -25.0 Dark Down 26.2 197.0 Low 07:38:33 - 08:08:33 7147
Manson/Chelan 07:53:34 -25.5 Dark Down 26.8 196.5 Low 07:38:34 - 08:08:34 7139
Brewster 07:53:34 -25.3 Dark Down 26.5 196.8 Low 07:38:34 - 08:08:34 7138
Wenatchee 07:53:34 -25.9 Dark Down 27.2 196.3 Low 07:38:34 - 08:08:34 7117
Ellensburg 07:53:37 -26.3 Dark Down 27.7 196.2 Low 07:38:37 - 08:08:37 7101
Yakima 07:53:37 -26.7 Dark Down 28.1 196.2 Low 07:38:37 - 08:08:37 7077
Toppenish/White Swan 07:53:35 -27.0 Dark Down 28.3 196.4 Low 07:38:35 - 08:08:35 7059
The Dalles 07:53:38 -27.7 Dark Down 29.1 195.7 Low 07:38:38 - 08:08:38 7040
Maupin 07:53:38 -28.1 Dark Down 29.5 195.9 Low 07:38:38 - 08:08:38 7011
PNWRO 07:53:31 -27.4 Dark Down 28.3 198.1 Low 07:38:31 - 08:08:31 6984
Sisters 07:53:40 -29.0 Dark Down 30.5 195.5 Up 07:38:40 - 08:08:40 6975
Bend 07:53:40 -29.2 Dark Down 30.7 195.8 Up 07:38:40 - 08:08:40 6952
Oregon Observatory 07:53:40 -29.4 Dark Down 30.8 195.7 Up 07:38:40 - 08:08:40 6946
Sleaford 07:52:58 -20.7 Dark Up 19.3 210.1 Really Low 07:37:58 - 08:07:58 6919
Chiloquin 07:53:42 -30.7 Dark Down 32.2 195.4 Up 07:38:42 - 08:08:42 6878
Klamath Falls 07:53:42 -31.0 Dark Down 32.5 195.6 Up 07:38:42 - 08:08:42 6853
Fall River/Burney 07:53:41 -32.2 Dark Down 33.6 196.2 Up 07:38:41 - 08:08:41 6762
Cedarville 07:53:36 -31.8 Dark Down 32.8 197.5 Up 07:38:36 - 08:08:36 6748
Greenville 07:53:40 -33.2 Dark Down 34.3 196.9 Up 07:38:40 - 08:08:40 6685
Gimple 07:53:39 -33.2 Dark Down 34.3 197.0 Up 07:38:39 - 08:08:39 6682
Quincy 07:53:40 -33.4 Dark Down 34.5 197.0 Up 07:38:40 - 08:08:40 6671
Portola 07:53:38 -33.5 Dark Down 34.5 197.5 Up 07:38:38 - 08:08:38 6645
Reno 07:53:36 -33.8 Dark Down 34.6 198.3 Up 07:38:36 - 08:08:36 6602
Carson City 07:53:37 -34.2 Dark Down 35.0 198.4 Up 07:38:37 - 08:08:37 6576
Gardnerville 07:53:36 -34.4 Dark Down 35.2 198.5 Up 07:38:36 - 08:08:36 6557
Yerington 07:53:34 -34.4 Dark Down 35.0 199.2 Up 07:38:34 - 08:08:34 6538
Hawthorne 07:53:33 -34.9 Dark Down 35.3 199.9 Up 07:38:33 - 08:08:33 6485
Lee Vining 07:53:35 -35.4 Dark Down 36.0 199.5 Up 07:38:35 - 08:08:35 6464
Bishop 07:53:33 -36.0 Dark Down 36.3 200.5 Up 07:38:33 - 08:08:33 6392
Beatty 07:53:27 -36.5 Dark Down 36.3 202.4 Up 07:38:27 - 08:08:27 6293
Wildwood 07:53:36 -39.3 Dark Down 39.4 201.1 Up 07:38:36 - 08:08:36 6159
Dunrhomin 07:52:48 -32.2 Dark Down 29.1 213.6 Low 07:37:48 - 08:07:48 6079
Laughlin/Bullhead City 07:53:20 -38.2 Dark Down 37.2 205.4 Up 07:38:20 - 08:08:20 6073
Nikitin 07:52:49 -32.3 Dark Down 29.3 213.7 Low 07:37:49 - 08:07:49 6066
CU-SBO 07:52:49 -32.4 Dark Down 29.4 213.6 Low 07:37:49 - 08:07:49 6064
Patrick 07:53:17 -37.9 Dark Down 36.7 206.1 Up 07:38:17 - 08:08:17 6063
Idyllwild 07:53:29 -39.7 Dark Down 39.2 203.5 Up 07:38:29 - 08:08:29 6053
Lake Havasu City 07:53:20 -38.9 Dark Down 37.7 205.9 Up 07:38:20 - 08:08:20 6011
Calipatria 07:53:25 -40.3 Dark Down 39.3 205.0 Up 07:38:25 - 08:08:25 5955
Yuma 07:53:21 -40.7 Dark Down 39.4 206.2 Up 07:38:21 - 08:08:21 5883
George/Scottsdale 07:53:11 -39.5 Dark Down 37.5 208.9 Up 07:38:11 - 08:08:11 5846

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 552678, (2029/08/06 07:56UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 45.30 112
Nunki          18:55:15.9 -26:17:49  2.0 18.35 165
PPM 236528     19:48:50.2 -12:19:10  6.5  1.89 149
PPM 236650     19:53:42.7 -14:10:27  8.5  0.31 149
PPM 236635     19:53:05.1 -13:43:19  9.6  0.18 149
552678         19:53:05.1 -13:54:24 15.7       149
Positions are for J2000

Event circumstances last updated at 2022/12/16 00:44:25 UT

Marc W. Buie, Southwest Research Institute

RECON