RECON: TNO occultation with 00KL4

Event between 00KL4 and star GA0840:08516815 with event index number of 2581206

Geocentric closest approach at 2023/06/23 08:00:11 UTC

J2000 position of star is 18:24:56.3 -05:51:09
Equinox of date position of star is 18:26:11.1 -05:50:17
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 124 degrees from the moon. Moon is 23% illuminated.
Apparent brightness V=23.4

[RECON map]
Object is 39.0 AU from the Sun and 38.0 AU from the Earth.
Apparent velocity is 24.6 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 395 seconds.
The 1-sigma cross-track error in the shadow position is 2310 km.
The sky-plane scale is 27576.0 km/arcsec.

The object has an absolute magnitude Hv=7.5
Diameter=187.9 km assuming a 5% albedo -- 7.7 sec chord
Diameter=76.7 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 00KL4, (2023/06/23 08:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.0 -26:28:55  0.9 34.37 101
60Bet Oph      17:44:38.0 +04:33:33  2.8 14.69 111
PPM 201730     18:25:58.4 -07:03:42  6.5  1.22 124
PPM 201703     18:24:39.2 -05:34:11  8.5  0.47 124
PPM 201724     18:25:44.6 -05:56:16  9.2  0.15 124
00KL4          18:26:11.7 -05:50:17 16.4       124
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 2.3 sigma about the mid-time.
The median site spacing is 22.6 km RECON observability=1.0 and success probability=20.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:59:35 -13.6 AT Down 31.6 190.5 Up 07:44:35 - 08:14:35 432
Kamloops 08:00:15 -15.9 AT Down 33.3 173.7 Up 07:45:15 - 08:15:15 406
Kelowna 08:00:13 -16.7 AT Down 34.2 174.7 Up 07:45:13 - 08:15:13 353
Peachland 08:00:14 -16.8 AT Down 34.2 174.3 Up 07:45:14 - 08:15:14 347
Summerland 08:00:14 -17.0 AT Down 34.4 174.4 Up 07:45:14 - 08:15:14 337
Penticton 08:00:13 -17.0 AT Down 34.5 174.6 Up 07:45:13 - 08:15:13 333
Oliver 08:00:14 -17.4 AT Down 34.8 174.5 Up 07:45:14 - 08:15:14 310
Anarchist Mountain Observatory 08:00:13 -17.6 AT Down 35.0 174.8 Up 07:45:13 - 08:15:13 299
Victoria 08:00:25 -18.0 AT Down 35.1 169.9 Up 07:45:25 - 08:15:25 281
Okanogan 08:00:14 -18.2 Dark Down 35.6 174.5 Up 07:45:14 - 08:15:14 258
Brewster 08:00:15 -18.5 Dark Down 35.9 174.2 Up 07:45:15 - 08:15:15 241
Manson/Chelan 08:00:16 -18.7 Dark Down 36.1 173.7 Up 07:45:16 - 08:15:16 229
Wenatchee 08:00:17 -19.2 Dark Down 36.5 173.5 Up 07:45:17 - 08:15:17 199
Ellensburg 08:00:18 -19.6 Dark Down 36.9 173.2 Up 07:45:18 - 08:15:18 172
Yakima 08:00:18 -20.0 Dark Down 37.3 173.1 Up 07:45:18 - 08:15:18 145
Toppenish/White Swan 08:00:17 -20.2 Dark Down 37.6 173.3 Up 07:45:17 - 08:15:17 130
PNWRO 08:00:13 -20.6 Dark Down 38.0 175.2 Up 07:45:13 - 08:15:13 99
The Dalles 08:00:20 -21.0 Dark Down 38.3 172.3 Up 07:45:20 - 08:15:20 79
Maupin 08:00:20 -21.4 Dark Down 38.7 172.4 Up 07:45:20 - 08:15:20 50
Sisters 08:00:22 -22.3 Dark Down 39.5 171.6 Up 07:45:22 - 08:15:22 -9
Bend 08:00:21 -22.5 Dark Down 39.8 171.9 Up 07:45:21 - 08:15:21 -27
Oregon Observatory 08:00:22 -22.7 Dark Down 39.9 171.7 Up 07:45:22 - 08:15:22 -39
Chiloquin 08:00:24 -24.0 Dark Down 41.2 171.0 Up 07:45:24 - 08:15:24 -132
Klamath Falls 08:00:24 -24.3 Dark Down 41.5 171.1 Up 07:45:24 - 08:15:24 -158
Cedarville 08:00:19 -25.0 Dark Down 42.4 173.1 Up 07:45:19 - 08:15:19 -215
Fall River/Burney 08:00:23 -25.5 Dark Down 42.7 171.5 Up 07:45:23 - 08:15:23 -247
Greenville 08:00:22 -26.4 Dark Down 43.7 171.9 Up 07:45:22 - 08:15:22 -318
Gimple 08:00:22 -26.4 Dark Down 43.7 172.0 Up 07:45:22 - 08:15:22 -318
Quincy 08:00:22 -26.6 Dark Down 43.9 171.9 Up 07:45:22 - 08:15:22 -333
Portola 08:00:21 -26.8 Dark Down 44.1 172.5 Up 07:45:21 - 08:15:21 -345
Reno 08:00:19 -27.0 Dark Down 44.4 173.4 Up 07:45:19 - 08:15:19 -368
Dunrhomin 07:59:28 -25.0 Dark Down 43.0 193.3 Up 07:44:28 - 08:14:28 -388
Carson City 08:00:19 -27.4 Dark Down 44.8 173.4 Up 07:45:19 - 08:15:19 -396
Nikitin 07:59:29 -25.1 Dark Down 43.2 193.3 Up 07:44:29 - 08:14:29 -403
CU-SBO 07:59:29 -25.2 Dark Down 43.3 193.2 Up 07:44:29 - 08:14:29 -407
Yerington 08:00:17 -27.6 Dark Down 45.0 174.2 Up 07:45:17 - 08:15:17 -414
Gardnerville 08:00:19 -27.6 Dark Down 45.0 173.4 Up 07:45:19 - 08:15:19 -415
Hawthorne 08:00:15 -28.0 Dark Down 45.5 174.9 Up 07:45:15 - 08:15:15 -453
Lee Vining 08:00:17 -28.6 Dark Down 46.0 174.2 Up 07:45:17 - 08:15:17 -495
Bishop 08:00:14 -29.2 Dark Down 46.7 175.2 Up 07:45:14 - 08:15:14 -547
Beatty 08:00:09 -29.6 Dark Down 47.2 177.5 Up 07:45:09 - 08:15:09 -592
Patrick 07:59:59 -30.9 Dark Down 48.7 181.7 Up 07:44:59 - 08:14:59 -729
Laughlin/Bullhead City 08:00:01 -31.2 Dark Down 49.0 180.7 Up 07:45:01 - 08:15:01 -746
Lake Havasu City 08:00:01 -31.9 Dark Down 49.6 181.1 Up 07:45:01 - 08:15:01 -804
Wildwood 08:00:16 -32.5 Dark Down 49.9 174.5 Up 07:45:16 - 08:15:16 -816
Idyllwild 08:00:10 -32.8 Dark Down 50.4 177.4 Up 07:45:10 - 08:15:10 -855
George/Scottsdale 07:59:51 -32.4 Dark Down 50.3 184.9 Up 07:44:51 - 08:14:51 -883
Calipatria 08:00:05 -33.3 Dark Down 51.0 179.2 Up 07:45:05 - 08:15:05 -914
Yuma 08:00:02 -33.7 Dark Down 51.5 180.6 Up 07:45:02 - 08:15:02 -956

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 00KL4, (2023/06/23 08:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 34.37 101
60Bet Oph      17:43:28.3 +04:34:06  2.8 14.69 111
PPM 201730     18:24:42.3 -07:04:34  6.5  1.22 124
PPM 201703     18:23:24.0 -05:35:00  8.5  0.47 124
PPM 201724     18:24:29.2 -05:57:08  9.2  0.15 124
00KL4          18:24:56.3 -05:51:09 16.4       124
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:27:48 UT

Marc W. Buie, Southwest Research Institute

RECON