RECON: TNO occultation with 00KL4

Event between 00KL4 and star GA0820:08896641 with event index number of 2581257

Geocentric closest approach at 2023/08/10 06:00:42 UTC

J2000 position of star is 18:21:12.8 -06:02:48
Equinox of date position of star is 18:22:28.6 -06:02:03
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 147 degrees from the moon. Moon is 32% illuminated.
Apparent brightness V=23.5

[RECON map]
Object is 39.0 AU from the Sun and 38.2 AU from the Earth.
Apparent velocity is 18.5 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 405 seconds.
The 1-sigma cross-track error in the shadow position is 5268 km.
The sky-plane scale is 27740.9 km/arcsec.

The object has an absolute magnitude Hv=7.5
Diameter=187.9 km assuming a 5% albedo -- 10.1 sec chord
Diameter=76.7 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 00KL4, (2023/08/10 06:01UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.5 -26:28:56  0.9 33.54 178
60Bet Oph      17:44:38.4 +04:33:33  2.8 14.19 145
PPM 201730     18:25:58.8 -07:03:42  6.5  1.35 147
PPM 201709     18:24:50.9 -06:14:14  8.4  0.62 146
PPM 201657     18:22:38.8 -05:51:12  9.6  0.19 146
00KL4          18:22:28.7 -06:02:03 16.9       146
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 26.0 km RECON observability=1.0 and success probability=3.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:58:09 -17.9 AT Down 32.3 194.6 Up 05:43:09 - 06:13:09 10210
Victoria 05:58:21 -18.6 Dark Down 34.8 191.3 Up 05:43:21 - 06:13:21 10163
Peachland 05:58:06 -18.9 Dark Down 33.1 195.4 Up 05:43:06 - 06:13:06 10133
Kelowna 05:58:07 -18.9 Dark Down 32.9 195.7 Up 05:43:07 - 06:13:07 10131
Summerland 05:58:06 -19.1 Dark Down 33.2 195.5 Up 05:43:06 - 06:13:06 10120
Penticton 05:58:06 -19.2 Dark Down 33.3 195.7 Up 05:43:06 - 06:13:06 10112
Oliver 05:58:05 -19.5 Dark Down 33.6 195.7 Up 05:43:05 - 06:13:05 10089
Anarchist Mountain Observatory 05:58:07 -19.7 Dark Down 33.7 196.0 Up 05:43:07 - 06:13:07 10072
Okanogan 05:58:06 -20.2 Dark Down 34.4 195.9 Up 05:43:06 - 06:13:06 10036
Brewster 05:58:08 -20.3 Dark Down 34.7 195.7 Up 05:43:08 - 06:13:08 10024
Manson/Chelan 05:58:09 -20.4 Dark Down 34.9 195.3 Up 05:43:09 - 06:13:09 10021
Wenatchee 05:58:09 -20.7 Dark Down 35.4 195.2 Up 05:43:09 - 06:13:09 9995
Ellensburg 05:58:13 -21.0 Dark Down 35.9 195.0 Up 05:43:13 - 06:13:13 9974
Yakima 05:58:12 -21.3 Dark Down 36.3 195.0 Up 05:43:12 - 06:13:12 9946
Toppenish/White Swan 05:58:11 -21.5 Dark Down 36.4 195.3 Up 05:43:11 - 06:13:11 9926
The Dalles 05:58:15 -21.9 Dark Down 37.3 194.5 Up 05:43:15 - 06:13:15 9897
Sleaford 05:57:25 -20.5 Dark Up 27.6 210.2 Low 05:42:25 - 06:12:25 9890
Maupin 05:58:13 -22.3 Dark Down 37.7 194.7 Up 05:43:13 - 06:13:13 9865
PNWRO 05:58:05 -22.4 Dark Down 36.5 197.2 Up 05:43:05 - 06:13:05 9852
Sisters 05:58:16 -22.8 Dark Down 38.7 194.3 Up 05:43:16 - 06:13:16 9819
Bend 05:58:16 -23.1 Dark Down 38.8 194.6 Up 05:43:16 - 06:13:16 9794
Oregon Observatory 05:58:16 -23.2 Dark Down 39.0 194.5 Up 05:43:16 - 06:13:16 9786
Chiloquin 05:58:20 -24.1 Dark Down 40.4 194.3 Up 05:43:20 - 06:13:20 9705
Klamath Falls 05:58:20 -24.4 Dark Down 40.7 194.4 Up 05:43:20 - 06:13:20 9677
Fall River/Burney 05:58:18 -25.5 Dark Down 41.8 195.2 Up 05:43:18 - 06:13:18 9576
Cedarville 05:58:13 -25.7 Dark Down 41.1 196.6 Up 05:43:13 - 06:13:13 9570
Greenville 05:58:20 -26.5 Dark Down 42.6 196.0 Up 05:43:20 - 06:13:20 9492
Gimple 05:58:18 -26.5 Dark Down 42.5 196.1 Up 05:43:18 - 06:13:18 9489
Quincy 05:58:18 -26.6 Dark Down 42.7 196.1 Up 05:43:18 - 06:13:18 9476
Portola 05:58:14 -26.9 Dark Down 42.8 196.7 Up 05:43:14 - 06:13:14 9450
Reno 05:58:14 -27.4 Dark Down 42.9 197.6 Up 05:43:14 - 06:13:14 9406
Carson City 05:58:16 -27.8 Dark Down 43.2 197.8 Up 05:43:16 - 06:13:16 9378
Gardnerville 05:58:15 -28.0 Dark Down 43.4 197.9 Up 05:43:15 - 06:13:15 9357
Yerington 05:58:12 -28.2 Dark Down 43.2 198.7 Up 05:43:12 - 06:13:12 9340
Hawthorne 05:58:12 -28.8 Dark Down 43.5 199.5 Up 05:43:12 - 06:13:12 9284
Lee Vining 05:58:11 -29.1 Dark Down 44.2 199.0 Up 05:43:11 - 06:13:11 9257
Bishop 05:58:10 -29.9 Dark Down 44.6 200.2 Up 05:43:10 - 06:13:10 9182
Beatty 05:58:04 -31.0 Dark Down 44.5 202.5 Up 05:43:04 - 06:13:04 9085
Dunrhomin 05:57:17 -31.9 Dark Down 37.3 215.0 Up 05:42:17 - 06:12:17 8950
Nikitin 05:57:16 -32.0 Dark Down 37.5 215.1 Up 05:42:16 - 06:12:16 8935
CU-SBO 05:57:16 -32.1 Dark Down 37.6 215.0 Up 05:42:16 - 06:12:16 8932
Wildwood 05:58:16 -32.5 Dark Down 47.7 201.1 Up 05:43:16 - 06:13:16 8921
Laughlin/Bullhead City 05:57:57 -33.3 Dark Down 45.4 206.1 Up 05:42:57 - 06:12:57 8859
Patrick 05:57:53 -33.4 Dark Down 44.9 206.9 Up 05:42:53 - 06:12:53 8853
Idyllwild 05:58:08 -33.6 Dark Down 47.4 203.9 Up 05:43:08 - 06:13:08 8819
Lake Havasu City 05:57:57 -34.0 Dark Down 45.9 206.7 Up 05:42:57 - 06:12:57 8792
Calipatria 05:58:04 -34.7 Dark Down 47.6 205.8 Up 05:43:04 - 06:13:04 8721
Yuma 05:57:59 -35.4 Dark Down 47.6 207.2 Up 05:42:59 - 06:12:59 8649
George/Scottsdale 05:57:47 -35.7 Dark Down 45.6 210.3 Up 05:42:47 - 06:12:47 8631

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, (2023/08/10 06:01UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 33.54 178
60Bet Oph      17:43:28.3 +04:34:06  2.8 14.19 145
PPM 201730     18:24:42.3 -07:04:34  6.5  1.35 147
PPM 201709     18:23:34.9 -06:15:04  8.4  0.62 146
PPM 201657     18:21:23.0 -05:51:57  9.6  0.19 146
00KL4          18:21:12.8 -06:02:48 16.9       147
Positions are for J2000

Event circumstances last updated at 2023/07/27 03:49:29 UT

Marc W. Buie, Southwest Research Institute

RECON