RECON: TNO occultation with 04KJ19

Event between 04KJ19 and star GA0780:07157622 with event index number of 1975270

Geocentric closest approach at 2023/05/18 10:29:12 UTC

J2000 position of star is 17:39:26.2 -11:13:38
Equinox of date position of star is 17:40:44.0 -11:14:19
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 136 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=22.6

[RECON map]
Object is 36.2 AU from the Sun and 35.3 AU from the Earth.
Apparent velocity is 21.3 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 202 seconds.
The 1-sigma cross-track error in the shadow position is 2016 km.
The sky-plane scale is 25616.0 km/arcsec.

The object has an absolute magnitude Hv=7.0
Diameter=235.5 km assuming a 5% albedo -- 11.0 sec chord
Diameter=96.1 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 04KJ19, (2023/05/18 10:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.7 -26:28:55  0.9 22.44 152
35Eta Oph      17:11:43.2 -15:45:08  2.6  8.37 144
PPM 233365     17:39:27.4 -10:56:18  5.7  0.43 136
PPM 233403     17:40:46.2 -11:16:42  8.4  0.04 136
04KJ19         17:40:44.3 -11:14:19 16.8       136
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 4.5 sigma about the mid-time.
The median site spacing is 15.0 km RECON observability=0.7 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)
Sleaford	10:29:15	-5.2	CT	Down	23.8	204.1	Low	10:14:15 - 10:44:15	10503
Kamloops	10:29:55	-12.2	AT	Down	27.7	189.0	Low	10:14:55 - 10:44:55	10235
Kelowna	10:29:52	-12.5	AT	Down	28.4	190.0	Low	10:14:52 - 10:44:52	10210
Peachland	10:29:52	-12.7	AT	Down	28.5	189.7	Low	10:14:52 - 10:44:52	10200
Summerland	10:29:52	-12.8	AT	Down	28.7	189.8	Low	10:14:52 - 10:44:52	10194
Penticton	10:29:52	-12.8	AT	Down	28.7	190.0	Low	10:14:52 - 10:44:52	10193
Oliver	10:29:51	-13.1	AT	Down	29.1	190.0	Low	10:14:51 - 10:44:51	10175
Anarchist Mountain Observatory	10:29:52	-13.2	AT	Down	29.2	190.2	Low	10:14:52 - 10:44:52	10170
Okanogan	10:29:52	-13.8	AT	Down	29.9	190.1	Low	10:14:52 - 10:44:52	10133
Brewster	10:29:51	-14.1	AT	Down	30.2	189.9	Up	10:14:51 - 10:44:51	10116
Manson/Chelan	10:29:52	-14.4	AT	Down	30.4	189.5	Up	10:14:52 - 10:44:52	10099
Victoria	10:30:03	-15.1	AT	Down	30.1	185.8	Up	10:15:03 - 10:45:03	10074
Wenatchee	10:29:52	-14.8	AT	Down	30.9	189.3	Up	10:14:52 - 10:44:52	10071
Ellensburg	10:29:53	-15.3	AT	Down	31.3	189.1	Up	10:14:53 - 10:44:53	10045
Yakima	10:29:52	-15.6	AT	Down	31.8	189.1	Up	10:14:52 - 10:44:52	10022
PNWRO	10:29:45	-15.4	AT	Down	32.1	191.1	Up	10:14:45 - 10:44:45	10020
Toppenish/White Swan	10:29:51	-15.7	AT	Down	31.9	189.3	Up	10:14:51 - 10:44:51	10014
The Dalles	10:29:53	-16.6	AT	Down	32.8	188.5	Up	10:14:53 - 10:44:53	9956
Maupin	10:29:51	-16.9	AT	Down	33.2	188.7	Up	10:14:51 - 10:44:51	9934
Dunrhomin	10:28:47	-12.6	AT	Down	34.3	207.7	Up	10:13:47 - 10:43:47	9914
Nikitin	10:28:47	-12.7	AT	Down	34.4	207.7	Up	10:13:47 - 10:43:47	9902
CU-SBO	10:28:47	-12.8	AT	Down	34.5	207.6	Up	10:13:47 - 10:43:47	9897
Sisters	10:29:53	-17.9	AT	Down	34.1	188.2	Up	10:14:53 - 10:44:53	9875
Bend	10:29:52	-17.9	AT	Down	34.3	188.5	Up	10:14:52 - 10:44:52	9866
Oregon Observatory	10:29:51	-18.1	Dark	Down	34.5	188.4	Up	10:14:51 - 10:44:51	9853
Chiloquin	10:29:51	-19.4	Dark	Down	35.9	188.0	Up	10:14:51 - 10:44:51	9766
Klamath Falls	10:29:50	-19.6	Dark	Down	36.2	188.1	Up	10:14:50 - 10:44:50	9746
Cedarville	10:29:45	-19.4	Dark	Down	36.7	190.1	Up	10:14:45 - 10:44:45	9735
Fall River/Burney	10:29:48	-20.4	Dark	Down	37.3	188.7	Up	10:14:48 - 10:44:48	9680
Gimple	10:29:45	-20.9	Dark	Down	38.2	189.5	Up	10:14:45 - 10:44:45	9633
Greenville	10:29:46	-20.9	Dark	Down	38.2	189.4	Up	10:14:46 - 10:44:46	9631
Portola	10:29:43	-20.9	Dark	Down	38.4	190.0	Up	10:14:43 - 10:44:43	9620
Quincy	10:29:45	-21.1	Dark	Down	38.4	189.4	Up	10:14:45 - 10:44:45	9618
Reno	10:29:41	-20.8	Dark	Down	38.6	190.8	Up	10:14:41 - 10:44:41	9615
Carson City	10:29:40	-21.1	Dark	Down	39.0	190.9	Up	10:14:40 - 10:44:40	9592
Yerington	10:29:37	-21.0	Dark	Down	39.0	191.7	Up	10:14:37 - 10:44:37	9592
Gardnerville	10:29:39	-21.3	Dark	Down	39.2	191.0	Up	10:14:39 - 10:44:39	9577
Hawthorne	10:29:36	-21.0	Dark	Down	39.4	192.4	Up	10:14:36 - 10:44:36	9572
Lee Vining	10:29:35	-21.7	Dark	Down	40.1	191.9	Up	10:14:35 - 10:44:35	9525
Beatty	10:29:25	-21.3	Dark	Down	40.7	195.1	Up	10:14:25 - 10:44:25	9499
Bishop	10:29:32	-21.8	Dark	Down	40.5	192.9	Up	10:14:32 - 10:44:32	9498
Patrick	10:29:11	-20.8	Dark	Down	41.4	199.0	Up	10:14:11 - 10:44:11	9452
Laughlin/Bullhead City	10:29:14	-21.4	Dark	Down	41.8	198.2	Up	10:14:14 - 10:44:14	9421
Lake Havasu City	10:29:12	-21.7	Dark	Down	42.4	198.7	Up	10:14:12 - 10:44:12	9378
George/Scottsdale	10:29:01	-20.8	Dark	Down	42.4	202.0	Up	10:14:01 - 10:44:01	9370
Idyllwild	10:29:19	-23.6	Dark	Down	43.7	195.9	Up	10:14:19 - 10:44:19	9277
Wildwood	10:29:28	-24.4	Dark	Down	43.7	193.3	Up	10:14:28 - 10:44:28	9263
Calipatria	10:29:14	-23.4	Dark	Down	44.0	197.6	Up	10:14:14 - 10:44:14	9255
Yuma	10:29:10	-23.2	Dark	Down	44.2	198.8	Up	10:14:10 - 10:44:10	9242

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 04KJ19, (2023/05/18 10:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.44 152
35Eta Oph      17:10:22.7 -15:43:29  2.6  8.37 144
PPM 233365     17:38:09.5 -10:55:35  5.7  0.43 136
PPM 233403     17:39:28.1 -11:16:01  8.4  0.04 136
04KJ19         17:39:26.2 -11:13:38 16.8       136
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:25:22 UT

RECON