RECON: TNO occultation with 00KL4

Event between 00KL4 and star GA0820:15218204 with event index number of 2584038

Geocentric closest approach at 2028/07/16 08:38:48 UTC

J2000 position of star is 18:52:57.3 -07:14:40
Equinox of date position of star is 18:54:13.9 -07:12:50
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 36% illuminated.
Apparent brightness V=23.4

[RECON map]
Object is 38.7 AU from the Sun and 37.7 AU from the Earth.
Apparent velocity is 24.4 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 780 seconds.
The 1-sigma cross-track error in the shadow position is 4628 km.
The sky-plane scale is 27348.5 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 -- 3.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 00KL4, (2028/07/16 08:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.7 -26:29:34  0.9 39.12 152
Nunki          18:57:02.0 -26:15:31  2.0 19.06 119
Eta Sct        18:58:35.3 -05:48:25  4.8  1.73 114
PPM 202241     18:53:40.5 -07:13:20  8.4  0.20 115
PPM 202261     18:54:43.7 -07:02:05  9.3  0.18 115
00KL4          18:54:29.8 -07:12:27 15.3       115
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 1.2 sigma about the mid-time.
The median site spacing is 22.3 km RECON observability=1.0 and success probability=9.0%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	08:37:08	-17.8	AT	Up	29.5	203.4	Low	08:22:08 - 08:52:08	2931
Kelowna	08:37:05	-18.5	Dark	Up	30.0	204.6	Low	08:22:05 - 08:52:05	2862
Peachland	08:37:06	-18.7	Dark	Up	30.1	204.3	Up	08:22:06 - 08:52:06	2860
Summerland	08:37:05	-18.8	Dark	Up	30.3	204.4	Up	08:22:05 - 08:52:05	2849
Penticton	08:37:05	-18.8	Dark	Up	30.3	204.5	Up	08:22:05 - 08:52:05	2842
Victoria	08:37:15	-20.1	Dark	Up	32.2	200.5	Up	08:22:15 - 08:52:15	2840
Oliver	08:37:04	-19.2	Dark	Up	30.6	204.6	Up	08:22:04 - 08:52:04	2819
Anarchist Mountain Observatory	08:37:04	-19.3	Dark	Up	30.7	204.9	Up	08:22:04 - 08:52:04	2804
Sleaford	08:36:34	-14.3	AT	Up	23.7	218.1	Low	08:21:34 - 08:51:34	2786
Okanogan	08:37:04	-20.0	Dark	Up	31.4	204.8	Up	08:22:04 - 08:52:04	2764
Brewster	08:37:04	-20.3	Dark	Up	31.7	204.6	Up	08:22:04 - 08:52:04	2749
Manson/Chelan	08:37:05	-20.5	Dark	Up	32.0	204.3	Up	08:22:05 - 08:52:05	2741
Wenatchee	08:37:06	-21.0	Dark	Up	32.4	204.2	Up	08:22:06 - 08:52:06	2711
Ellensburg	08:37:05	-21.4	Dark	Up	32.9	204.1	Up	08:22:05 - 08:52:05	2687
Yakima	08:37:06	-21.9	Dark	Up	33.2	204.2	Up	08:22:06 - 08:52:06	2658
Toppenish/White Swan	08:37:05	-22.1	Dark	Up	33.4	204.4	Up	08:22:05 - 08:52:05	2640
The Dalles	08:37:07	-22.9	Dark	Up	34.3	203.7	Up	08:22:07 - 08:52:07	2599
PNWRO	08:37:00	-22.3	Dark	Up	33.3	206.2	Up	08:22:00 - 08:52:00	2587
Maupin	08:37:07	-23.3	Dark	Up	34.7	204.0	Up	08:22:07 - 08:52:07	2567
Sisters	08:37:08	-24.2	Dark	Up	35.6	203.6	Up	08:22:08 - 08:52:08	2512
Bend	08:37:07	-24.4	Dark	Up	35.8	204.0	Up	08:22:07 - 08:52:07	2490
Oregon Observatory	08:37:07	-24.6	Dark	Up	36.0	203.9	Up	08:22:07 - 08:52:07	2480
Chiloquin	08:37:08	-26.0	Dark	Up	37.3	203.8	Up	08:22:08 - 08:52:08	2389
Klamath Falls	08:37:07	-26.3	Dark	Up	37.6	204.0	Up	08:22:07 - 08:52:07	2362
Cedarville	08:37:02	-26.8	Dark	Up	37.7	206.1	Up	08:22:02 - 08:52:02	2277
Fall River/Burney	08:37:06	-27.4	Dark	Up	38.5	204.8	Up	08:22:06 - 08:52:06	2263
Greenville	08:37:04	-28.3	Dark	Up	39.2	205.7	Up	08:22:04 - 08:52:04	2184
Gimple	08:37:04	-28.3	Dark	Up	39.2	205.8	Up	08:22:04 - 08:52:04	2182
Quincy	08:37:04	-28.5	Dark	Up	39.4	205.8	Up	08:22:04 - 08:52:04	2167
Portola	08:37:03	-28.6	Dark	Up	39.4	206.4	Up	08:22:03 - 08:52:03	2148
Reno	08:37:00	-28.8	Dark	Up	39.4	207.2	Up	08:22:00 - 08:52:00	2114
Carson City	08:37:00	-29.1	Dark	Up	39.7	207.4	Up	08:22:00 - 08:52:00	2085
Gardnerville	08:37:00	-29.4	Dark	Up	39.9	207.6	Up	08:22:00 - 08:52:00	2064
Yerington	08:36:58	-29.2	Dark	Up	39.6	208.2	Up	08:21:58 - 08:51:58	2056
Hawthorne	08:36:56	-29.6	Dark	Up	39.8	209.0	Up	08:21:56 - 08:51:56	2008
Lee Vining	08:36:58	-30.2	Dark	Up	40.5	208.7	Up	08:21:58 - 08:51:58	1972
Bishop	08:36:55	-30.7	Dark	Up	40.8	209.8	Up	08:21:55 - 08:51:55	1907
Dunrhomin	08:36:18	-25.1	Dark	Up	32.4	222.9	Up	08:21:18 - 08:51:18	1876
Nikitin	08:36:18	-25.2	Dark	Up	32.5	222.9	Up	08:21:18 - 08:51:18	1861
CU-SBO	08:36:18	-25.3	Dark	Up	32.6	222.9	Up	08:21:18 - 08:51:18	1858
Beatty	08:36:49	-30.9	Dark	Up	40.5	211.9	Up	08:21:49 - 08:51:49	1834
Patrick	08:36:40	-31.9	Dark	Up	40.4	216.0	Up	08:21:40 - 08:51:40	1646
Laughlin/Bullhead City	08:36:42	-32.2	Dark	Up	41.0	215.3	Up	08:21:42 - 08:51:42	1639
Wildwood	08:36:55	-34.0	Dark	Up	43.7	211.1	Up	08:21:55 - 08:51:55	1633
Lake Havasu City	08:36:41	-32.8	Dark	Up	41.4	215.9	Up	08:21:41 - 08:51:41	1575
Idyllwild	08:36:48	-34.0	Dark	Up	43.1	213.5	Up	08:21:48 - 08:51:48	1561
Calipatria	08:36:44	-34.4	Dark	Up	43.1	215.2	Up	08:21:44 - 08:51:44	1481
George/Scottsdale	08:36:33	-33.0	Dark	Up	40.8	219.1	Up	08:21:33 - 08:51:33	1453
Yuma	08:36:41	-34.6	Dark	Up	43.0	216.5	Up	08:21:41 - 08:51:41	1423

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, (2028/07/16 08:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 39.12 152
Nunki          18:55:15.9 -26:17:49  2.0 19.06 119
Eta Sct        18:57:03.8 -05:50:48  4.8  1.73 114
PPM 202241     18:52:08.0 -07:15:31  8.4  0.20 115
PPM 202261     18:53:11.3 -07:04:19  9.3  0.18 115
00KL4          18:52:57.3 -07:14:40 15.3       115
Positions are for J2000

Event circumstances last updated at 2023/08/25 02:53:32 UT

RECON