RECON: TNO occultation with 119951

Event between (119951) 02KX14 and star GA0660:17073940 with event index number of 2113176

Geocentric closest approach at 2023/07/01 07:10:11 UTC

J2000 position of star is 17:41:02.0 -23:30:54
Equinox of date position of star is 17:42:27.1 -23:31:31
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 17 degrees from the moon. Moon is 93% illuminated.
Apparent brightness V=20.6

[RECON map]
Object is 38.8 AU from the Sun and 37.9 AU from the Earth.
Apparent velocity is 23.7 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 105 seconds.
The 1-sigma cross-track error in the shadow position is 1434 km.
The sky-plane scale is 27452.7 km/arcsec.

The object has an absolute magnitude Hv=4.7
Diameter=691.9 km assuming a 5% albedo -- 29.0 sec chord
Diameter=282.4 km assuming a 30% albedo -- 11.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 119951, (2023/07/01 07:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.1 -26:28:56  0.9 16.48   2
35Eta Oph      17:11:43.6 -15:45:08  2.6 10.61  13
PPM 267109     17:40:09.7 -21:55:28  6.4  1.69  16
PPM 267136     17:42:16.0 -23:50:48  8.2  0.32  16
PPM 267144     17:42:34.1 -23:29:05  9.2  0.05  17
119951         17:42:27.8 -23:31:32 16.2        17
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 16.2 km RECON observability=0.7 and success probability=4.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:09:37 -14.8 AT Up 13.2 194.4 Really Low 07:00:25 - 07:18:50 -814
Kamloops 07:10:17 -15.2 AT Up 15.8 181.0 Really Low 07:01:05 - 07:19:30 -833
Kelowna 07:10:15 -16.1 AT Up 16.6 181.8 Really Low 07:01:03 - 07:19:28 -857
Peachland 07:10:16 -16.2 AT Up 16.7 181.6 Really Low 07:01:03 - 07:19:28 -861
Summerland 07:10:15 -16.4 AT Up 16.9 181.7 Really Low 07:01:03 - 07:19:28 -865
Penticton 07:10:15 -16.4 AT Up 16.9 181.8 Really Low 07:01:03 - 07:19:28 -868
Oliver 07:10:15 -16.8 AT Up 17.3 181.8 Really Low 07:01:03 - 07:19:28 -879
Anarchist Mountain Observatory 07:10:15 -17.0 AT Up 17.5 181.9 Really Low 07:01:02 - 07:19:27 -884
Okanogan 07:10:15 -17.6 AT Up 18.1 181.7 Really Low 07:01:03 - 07:19:28 -907
Victoria 07:10:27 -16.8 AT Up 17.9 178.1 Really Low 07:01:14 - 07:19:39 -911
Brewster 07:10:15 -17.8 AT Up 18.4 181.6 Really Low 07:01:03 - 07:19:28 -916
Manson/Chelan 07:10:17 -18.0 AT Up 18.6 181.2 Really Low 07:01:04 - 07:19:29 -924
Wenatchee 07:10:17 -18.4 Dark Up 19.1 181.0 Really Low 07:01:05 - 07:19:30 -942
Ellensburg 07:10:18 -18.8 Dark Up 19.5 180.8 Really Low 07:01:06 - 07:19:31 -957
Yakima 07:10:18 -19.2 Dark Up 19.9 180.8 Really Low 07:01:06 - 07:19:31 -973
Toppenish/White Swan 07:10:17 -19.4 Dark Up 20.1 181.0 Low 07:01:05 - 07:19:30 -981
PNWRO 07:10:12 -20.0 Dark Up 20.4 182.4 Low 07:01:00 - 07:19:25 -992
The Dalles 07:10:20 -20.0 Dark Up 20.9 180.2 Low 07:01:07 - 07:19:32 -1013
Maupin 07:10:20 -20.4 Dark Up 21.3 180.3 Low 07:01:07 - 07:19:32 -1029
Sisters 07:10:21 -21.2 Dark Up 22.2 179.8 Low 07:01:09 - 07:19:34 -1066
Bend 07:10:20 -21.5 Dark Up 22.4 180.1 Low 07:01:08 - 07:19:33 -1075
Oregon Observatory 07:10:21 -21.6 Dark Up 22.6 180.0 Low 07:01:08 - 07:19:33 -1083
Chiloquin 07:10:22 -22.8 Dark Up 23.9 179.6 Low 07:01:10 - 07:19:35 -1142
Klamath Falls 07:10:21 -23.2 Dark Up 24.3 179.6 Low 07:01:09 - 07:19:34 -1157
Cedarville 07:10:16 -24.1 Dark Up 24.9 181.2 Low 07:01:04 - 07:19:29 -1185
Fall River/Burney 07:10:20 -24.4 Dark Up 25.4 180.0 Low 07:01:08 - 07:19:33 -1211
Gimple 07:10:19 -25.4 Dark Up 26.3 180.6 Low 07:01:06 - 07:19:31 -1254
Greenville 07:10:19 -25.3 Dark Up 26.3 180.5 Low 07:01:06 - 07:19:31 -1254
Quincy 07:10:19 -25.5 Dark Up 26.5 180.5 Low 07:01:06 - 07:19:31 -1264
Portola 07:10:17 -25.8 Dark Up 26.7 181.0 Low 07:01:05 - 07:19:30 -1268
Dunrhomin 07:09:24 -26.6 Dark Up 24.5 196.1 Low 07:00:11 - 07:18:36 -1278
Reno 07:10:15 -26.1 Dark Up 26.9 181.6 Low 07:01:02 - 07:19:27 -1280
Nikitin 07:09:24 -26.8 Dark Up 24.7 196.1 Low 07:00:11 - 07:18:36 -1287
CU-SBO 07:09:24 -26.9 Dark Up 24.8 196.1 Low 07:00:11 - 07:18:36 -1289
Carson City 07:10:15 -26.5 Dark Up 27.3 181.6 Low 07:01:02 - 07:19:27 -1298
Yerington 07:10:12 -26.8 Dark Up 27.5 182.3 Low 07:01:00 - 07:19:25 -1307
Gardnerville 07:10:14 -26.7 Dark Up 27.5 181.7 Low 07:01:02 - 07:19:27 -1311
Hawthorne 07:10:10 -27.3 Dark Up 27.9 182.8 Low 07:00:58 - 07:19:23 -1330
Lee Vining 07:10:12 -27.8 Dark Up 28.5 182.4 Low 07:01:00 - 07:19:25 -1360
Bishop 07:10:09 -28.5 Dark Up 29.1 183.1 Low 07:00:57 - 07:19:22 -1392
Beatty 07:10:03 -29.2 Dark Up 29.4 184.8 Low 07:00:51 - 07:19:16 -1416
Patrick 07:09:52 -31.1 Dark Up 30.7 187.9 Up 07:00:39 - 07:19:04 -1501
Laughlin/Bullhead City 07:09:54 -31.2 Dark Up 31.0 187.2 Up 07:00:42 - 07:19:07 -1515
Lake Havasu City 07:09:53 -31.9 Dark Up 31.6 187.5 Up 07:00:41 - 07:19:06 -1554
Wildwood 07:10:09 -31.7 Dark Up 32.3 183.0 Up 07:00:57 - 07:19:22 -1578
Idyllwild 07:10:02 -32.3 Dark Up 32.6 185.0 Up 07:00:50 - 07:19:15 -1597
George/Scottsdale 07:09:44 -32.9 Dark Up 32.1 190.2 Up 07:00:31 - 07:18:56 -1605
Calipatria 07:09:57 -33.1 Dark Up 33.1 186.3 Up 07:00:45 - 07:19:10 -1635
Yuma 07:09:53 -33.7 Dark Up 33.4 187.3 Up 07:00:41 - 07:19:06 -1662

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 119951, (2023/07/01 07:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 16.48   2
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.61  13
PPM 267109     17:38:44.8 -21:54:46  6.4  1.69  16
PPM 267136     17:40:49.9 -23:50:10  8.2  0.32  16
PPM 267144     17:41:08.3 -23:28:28  9.2  0.05  17
119951         17:41:02.0 -23:30:54 16.2        16
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:28:36 UT

Marc W. Buie, Southwest Research Institute

RECON