RECON: TNO occultation with 54598

Event between (54598) Bienor and star GA1300:03585467 with event index number of 1299505

Geocentric closest approach at 2024/04/12 04:19:52 UTC

J2000 position of star is 06:37:53.6 +40:19:14
Equinox of date position of star is 06:39:34.9 +40:17:53
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 31 degrees from the moon. Moon is 16% illuminated.
Apparent brightness V=19.1

[RECON map]
Object is 13.5 AU from the Sun and 13.7 AU from the Earth.
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 6.8 arcsec/hr.
The 1-sigma error in the time of the event is 29 seconds.
The 1-sigma cross-track error in the shadow position is 535 km.
The sky-plane scale is 9943.2 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=195.0 km assuming a 5% albedo -- 10.4 sec chord
Diameter=79.6 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 54598, (2024/04/12 04:20UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:48.0 +27:57:56  1.1 18.53  44
34Bet Aur      06:01:18.7 +44:56:50  1.9  8.43  27
52Psi3Aur      06:40:30.5 +39:52:44  5.2  0.45  31
PPM 049235     06:42:03.6 +40:56:44  7.3  0.80  31
PPM 049204     06:40:11.4 +40:04:29 10.0  0.25  31
PPM 049188     06:39:12.2 +40:11:05 11.0  0.14  31
54598          06:39:35.4 +40:17:52 16.9        31
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 0.0 km RECON observability=0.9 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	04:20:52	-19.7	Dark	Up	47.7	278.8	Up	04:17:56 - 04:23:48	6521
Dunrhomin	04:21:58	-28.7	Dark	Up	43.9	291.2	Up	04:19:02 - 04:24:54	6279
Nikitin	04:22:00	-28.8	Dark	Up	43.9	291.4	Up	04:19:04 - 04:24:56	6272
CU-SBO	04:22:00	-28.8	Dark	Up	43.9	291.4	Up	04:19:04 - 04:24:56	6265
Kelowna	04:20:56	-14.7	AT	Up	56.0	272.1	Up	04:18:00 - 04:23:52	5727
Penticton	04:20:59	-14.8	AT	Up	56.0	272.6	Up	04:18:03 - 04:23:55	5710
Peachland	04:20:57	-14.6	AT	Up	56.2	272.1	Up	04:18:01 - 04:23:53	5706
Summerland	04:20:57	-14.7	AT	Up	56.1	272.4	Up	04:18:01 - 04:23:53	5706
Kamloops	04:20:51	-13.7	AT	Up	56.6	270.2	Up	04:17:55 - 04:23:47	5706
Anarchist Mountain Observatory	04:21:01	-15.2	AT	Up	55.9	273.5	Up	04:18:05 - 04:23:57	5702
Oliver	04:21:01	-15.0	AT	Up	56.0	273.1	Up	04:18:05 - 04:23:57	5697
Okanogan	04:21:04	-15.4	AT	Up	56.0	274.3	Up	04:18:08 - 04:24:00	5665
Brewster	04:21:06	-15.5	AT	Up	56.1	274.6	Up	04:18:10 - 04:24:02	5643
PNWRO	04:21:18	-17.2	AT	Up	55.2	278.2	Up	04:18:22 - 04:24:14	5617
Manson/Chelan	04:21:06	-15.4	AT	Up	56.3	274.6	Up	04:18:10 - 04:24:02	5613
Wenatchee	04:21:09	-15.6	AT	Up	56.4	275.2	Up	04:18:13 - 04:24:05	5585
George/Scottsdale	04:22:30	-28.8	Dark	Up	46.2	295.4	Up	04:19:34 - 04:25:26	5585
Ellensburg	04:21:11	-15.7	AT	Up	56.5	275.7	Up	04:18:15 - 04:24:07	5555
Toppenish/White Swan	04:21:15	-16.1	AT	Up	56.3	276.7	Up	04:18:19 - 04:24:11	5540
Yakima	04:21:14	-15.9	AT	Up	56.4	276.3	Up	04:18:18 - 04:24:10	5538
Patrick	04:22:20	-26.4	Dark	Up	48.4	293.3	Up	04:19:24 - 04:25:16	5516
The Dalles	04:21:18	-16.0	AT	Up	56.7	277.5	Up	04:18:22 - 04:24:14	5459
Laughlin/Bullhead City	04:22:21	-26.1	Dark	Up	48.8	293.4	Up	04:19:25 - 04:25:17	5454
Maupin	04:21:20	-16.3	AT	Up	56.6	278.1	Up	04:18:24 - 04:24:16	5449
Victoria	04:20:59	-13.2	AT	Up	58.5	271.4	Up	04:18:03 - 04:23:55	5447
Lake Havasu City	04:22:24	-26.6	Dark	Up	48.4	294.1	Up	04:19:28 - 04:25:20	5442
Bend	04:21:26	-16.8	AT	Up	56.6	279.7	Up	04:18:30 - 04:24:22	5387
Sisters	04:21:24	-16.5	AT	Up	56.8	279.2	Up	04:18:28 - 04:24:20	5380
Beatty	04:22:09	-23.6	Dark	Up	51.2	291.0	Up	04:19:13 - 04:25:05	5378
Oregon Observatory	04:21:27	-16.8	AT	Up	56.6	279.9	Up	04:18:31 - 04:24:23	5371
Cedarville	04:21:42	-18.8	Dark	Up	55.2	283.9	Up	04:18:46 - 04:24:38	5351
Yuma	04:22:34	-27.4	Dark	Up	47.8	295.9	Up	04:19:38 - 04:25:30	5338
Hawthorne	04:21:59	-21.5	Dark	Up	53.1	288.5	Up	04:19:03 - 04:24:55	5321
Yerington	04:21:56	-20.9	Dark	Up	53.7	287.7	Up	04:19:00 - 04:24:52	5305
Calipatria	04:22:30	-26.5	Dark	Up	48.7	295.3	Up	04:19:34 - 04:25:26	5292
Chiloquin	04:21:33	-17.2	AT	Up	56.6	281.7	Up	04:18:37 - 04:24:29	5286
Reno	04:21:52	-20.1	Dark	Up	54.4	286.8	Up	04:18:56 - 04:24:48	5286
Bishop	04:22:06	-22.3	Dark	Up	52.6	290.0	Up	04:19:10 - 04:25:02	5284
Klamath Falls	04:21:35	-17.4	AT	Up	56.5	282.2	Up	04:18:39 - 04:24:31	5276
Carson City	04:21:54	-20.3	Dark	Up	54.2	287.3	Up	04:18:58 - 04:24:50	5271
Gardnerville	04:21:55	-20.5	Dark	Up	54.1	287.6	Up	04:18:59 - 04:24:51	5263
Lee Vining	04:22:01	-21.4	Dark	Up	53.3	289.1	Up	04:19:05 - 04:24:57	5261
Portola	04:21:50	-19.6	Dark	Up	54.9	286.2	Up	04:18:54 - 04:24:46	5253
Fall River/Burney	04:21:44	-18.3	Dark	Up	55.9	284.1	Up	04:18:48 - 04:24:40	5247
Gimple	04:21:48	-19.1	Dark	Up	55.3	285.6	Up	04:18:52 - 04:24:44	5241
Greenville	04:21:48	-19.1	Dark	Up	55.4	285.6	Up	04:18:52 - 04:24:44	5236
Idyllwild	04:22:26	-25.4	Dark	Up	49.9	294.5	Up	04:19:30 - 04:25:22	5235
Quincy	04:21:49	-19.2	Dark	Up	55.3	285.9	Up	04:18:53 - 04:24:45	5227
Wildwood	04:22:22	-23.8	Dark	Up	51.4	293.9	Up	04:19:26 - 04:25:18	5115

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 54598, (2024/04/12 04:20UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 18.53  44
34Bet Aur      05:59:31.6 +44:56:51  1.9  8.43  27
52Psi3Aur      06:38:49.2 +39:54:08  5.2  0.45  31
PPM 049235     06:40:21.3 +40:58:11  7.3  0.80  31
PPM 049204     06:38:29.8 +40:05:52 10.0  0.25  31
PPM 049188     06:37:30.5 +40:12:26 11.0  0.14  31
54598          06:37:53.6 +40:19:14 16.9        31
Positions are for J2000

Event circumstances last updated at 2024/03/05 04:22:42 UT

RECON