RECON: TNO occultation with 15GG56

Event between 15GG56 and star GA0760:04893225 with event index number of 2258862

Geocentric closest approach at 2023/05/16 09:52:07 UTC

J2000 position of star is 13:59:27.4 -12:27:53
Equinox of date position of star is 14:00:37.5 -12:34:11
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 163 degrees from the moon. Moon is 12% illuminated.
TNO apparent brightness V=24.1

[RECON map]
TNO is 42.3 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 22.7 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 170 seconds.
The 1-sigma cross-track error in the shadow position is 2858 km.
The sky-plane scale is 29974.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=155.6 km assuming a 5% albedo -- 7.2 sec chord
Diameter=63.5 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 15GG56, (2023/05/16 09:52UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:25.7 -11:16:57  1.0  8.48 170
PPM 228240     14:05:43.2 -15:04:59  6.3  2.78 160
PPM 228092     13:59:42.3 -12:10:23  7.3  0.47 163
PPM 228114     14:00:35.2 -12:50:32  9.5  0.27 163
15GG56         14:00:42.7 -12:34:39 16.0       162
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 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 09:51:11 -16.0 AT Down 12.4 232.5 Really Low 09:36:29 - 10:05:52 -443
Kelowna 09:51:10 -16.4 AT Down 12.7 232.4 Really Low 09:36:28 - 10:05:51 -456
Peachland 09:51:10 -16.5 AT Down 12.9 232.2 Really Low 09:36:28 - 10:05:51 -461
Summerland 09:51:09 -16.7 AT Down 13.0 232.3 Really Low 09:36:27 - 10:05:50 -465
Penticton 09:51:09 -16.7 AT Down 12.9 232.4 Really Low 09:36:27 - 10:05:50 -467
Oliver 09:51:07 -17.0 AT Down 13.2 232.4 Really Low 09:36:26 - 10:05:49 -479
Anarchist Mountain Observatory 09:51:06 -17.1 AT Down 13.2 232.6 Really Low 09:36:25 - 10:05:48 -484
Tonasket 09:51:06 -17.4 AT Down 13.4 232.6 Really Low 09:36:24 - 10:05:47 -496
Okanogan 09:51:04 -17.7 AT Down 13.7 232.5 Really Low 09:36:23 - 10:05:46 -508
Brewster 09:51:04 -18.0 Dark Down 14.0 232.4 Really Low 09:36:23 - 10:05:46 -519
Victoria 09:51:13 -18.7 Dark Down 15.5 229.3 Really Low 09:36:32 - 10:05:55 -519
Manson/Chelan 09:51:04 -18.3 Dark Down 14.3 232.2 Really Low 09:36:22 - 10:05:45 -527
Wenatchee 09:51:03 -18.8 Dark Down 14.7 232.1 Really Low 09:36:21 - 10:05:44 -546
Ellensburg 09:51:02 -19.2 Dark Down 15.0 232.0 Really Low 09:36:20 - 10:05:43 -562
Yakima 09:51:00 -19.6 Dark Down 15.3 232.1 Really Low 09:36:18 - 10:05:41 -578
Toppenish/White Swan 09:50:59 -19.7 Dark Down 15.3 232.3 Really Low 09:36:18 - 10:05:41 -586
Pasco 09:50:56 -19.4 Dark Down 14.7 233.3 Really Low 09:36:15 - 10:05:38 -586
PNWRO 09:50:54 -19.6 Dark Down 14.7 233.6 Really Low 09:36:13 - 10:05:36 -595
Goldendale 09:50:58 -20.4 Dark Down 15.9 232.0 Really Low 09:36:17 - 10:05:40 -609
The Dalles 09:50:58 -20.7 Dark Down 16.3 231.8 Really Low 09:36:17 - 10:05:40 -620
Maupin 09:50:56 -21.0 Dark Down 16.5 231.9 Really Low 09:36:15 - 10:05:38 -637
Redmond 09:50:54 -21.8 Dark Down 17.1 232.1 Really Low 09:36:12 - 10:05:35 -675
Sisters 09:50:54 -22.0 Dark Down 17.3 231.7 Really Low 09:36:13 - 10:05:36 -676
Bend 09:50:53 -22.1 Dark Down 17.3 232.0 Really Low 09:36:12 - 10:05:35 -685
Oregon Observatory 09:50:53 -22.3 Dark Down 17.5 231.9 Really Low 09:36:12 - 10:05:35 -693
La Pine/Gilchrist 09:50:52 -22.5 Dark Down 17.6 231.9 Really Low 09:36:11 - 10:05:34 -702
North Lake 09:50:50 -22.7 Dark Down 17.6 232.5 Really Low 09:36:08 - 10:05:31 -718
Paisley 09:50:47 -23.0 Dark Down 17.7 233.0 Really Low 09:36:05 - 10:05:28 -742
Chiloquin 09:50:49 -23.6 Dark Down 18.5 231.9 Really Low 09:36:08 - 10:05:31 -754
Lakeview 09:50:45 -23.4 Dark Down 17.9 233.2 Really Low 09:36:03 - 10:05:26 -765
Klamath Falls 09:50:48 -23.9 Dark Down 18.7 232.1 Really Low 09:36:07 - 10:05:30 -769
Cedarville 09:50:42 -23.9 Dark Down 18.2 233.5 Really Low 09:36:00 - 10:05:23 -795
Fall River/Burney 09:50:43 -24.8 Dark Down 19.2 232.7 Really Low 09:36:02 - 10:05:25 -824
Susanville 09:50:39 -25.1 Dark Down 19.1 233.4 Really Low 09:35:58 - 10:05:21 -852
Dunrhomin 09:50:06 -18.3 Dark Down 9.2 245.0 Really Low 09:35:25 - 10:04:48 -859
Gimple 09:50:39 -25.4 Dark Down 19.4 233.3 Really Low 09:35:57 - 10:05:20 -867
Greenville 09:50:39 -25.4 Dark Down 19.5 233.3 Really Low 09:35:58 - 10:05:21 -867
Quincy 09:50:39 -25.6 Dark Down 19.6 233.3 Really Low 09:35:57 - 10:05:20 -877
Portola 09:50:37 -25.5 Dark Down 19.4 233.8 Really Low 09:35:55 - 10:05:18 -881
Reno 09:50:35 -25.5 Dark Down 19.1 234.3 Really Low 09:35:53 - 10:05:16 -892
Carson City 09:50:33 -25.8 Dark Down 19.3 234.5 Really Low 09:35:52 - 10:05:15 -910
Yerington 09:50:31 -25.7 Dark Down 19.1 235.0 Really Low 09:35:50 - 10:05:13 -918
Gardnerville 09:50:32 -26.0 Dark Down 19.5 234.6 Really Low 09:35:51 - 10:05:14 -923
Hawthorne 09:50:28 -25.9 Dark Down 19.0 235.5 Really Low 09:35:46 - 10:05:09 -941
Tonopah 09:50:23 -25.7 Dark Down 18.3 236.7 Really Low 09:35:42 - 10:05:05 -961
Lee Vining 09:50:27 -26.6 Dark Down 19.6 235.3 Really Low 09:35:46 - 10:05:09 -972
Bishop 09:50:23 -26.8 Dark Down 19.5 236.0 Really Low 09:35:42 - 10:05:05 -1003
Beatty 09:50:18 -26.5 Dark Down 18.7 237.4 Really Low 09:35:37 - 10:05:00 -1024
Indian Springs 09:50:14 -26.3 Dark Down 18.1 238.3 Really Low 09:35:33 - 10:04:56 -1040
Henderson 09:50:11 -26.4 Dark Down 17.9 238.9 Really Low 09:35:29 - 10:04:52 -1069
Patrick 09:50:06 -26.4 Dark Down 17.5 239.9 Really Low 09:35:25 - 10:04:48 -1104
Kingman/Dolan Springs 09:50:06 -26.7 Dark Down 17.7 239.8 Really Low 09:35:24 - 10:04:47 -1117
Laughlin/Bullhead City 09:50:07 -26.9 Dark Down 18.1 239.4 Really Low 09:35:26 - 10:04:49 -1119
CPSLO 09:50:22 -29.5 Dark Down 22.2 234.9 Low 09:35:41 - 10:05:04 -1130
Mohave Valley 09:50:06 -27.2 Dark Down 18.3 239.5 Really Low 09:35:25 - 10:04:48 -1135
Lake Havasu City 09:50:04 -27.4 Dark Down 18.3 239.8 Really Low 09:35:23 - 10:04:46 -1159
Parker 09:50:03 -27.6 Dark Down 18.4 239.9 Really Low 09:35:21 - 10:04:44 -1180
Wildwood 09:50:13 -29.7 Dark Down 21.5 236.9 Low 09:35:32 - 10:04:55 -1192
George/Scottsdale 09:49:56 -26.7 Dark Down 16.9 241.7 Really Low 09:35:14 - 10:04:37 -1205
Idyllwild 09:50:07 -29.1 Dark Down 20.4 238.3 Low 09:35:26 - 10:04:49 -1207
Blythe 09:50:02 -28.2 Dark Down 18.9 239.9 Really Low 09:35:21 - 10:04:44 -1212
Calipatria 09:50:03 -29.1 Dark Down 19.8 239.4 Really Low 09:35:21 - 10:04:44 -1244
Yuma 09:49:59 -29.0 Dark Down 19.4 240.1 Really Low 09:35:17 - 10:04:40 -1269

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 15GG56, (2023/05/16 09:52UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  8.48 170
PPM 228240     14:04:26.9 -14:58:19  6.3  2.78 160
PPM 228092     13:58:27.1 -12:03:37  7.3  0.47 163
PPM 228114     13:59:19.8 -12:43:46  9.5  0.27 163
15GG56         13:59:27.4 -12:27:53 16.0       163
Positions are for J2000

Event circumstances last updated at 2021/10/07 00:42:28 UT

Marc W. Buie, Southwest Research Institute

RECON