RECON: TNO occultation with 307261

Event between (307261) 02MS4 and star GA0840:18913253 with event index number of 2752334

Geocentric closest approach at 2029/05/23 07:57:36 UTC

J2000 position of star is 19:31:30.5 -04:03:27
Equinox of date position of star is 19:32:46.9 -04:00:17
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 114 degrees from the moon. Moon is 74% illuminated.
Apparent brightness V=20.3

[RECON map]
Object is 45.7 AU from the Sun and 45.1 AU from the Earth.
Apparent velocity is 15.5 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 435 seconds.
The 1-sigma cross-track error in the shadow position is 2328 km.
The sky-plane scale is 32723.5 km/arcsec.

The object has an absolute magnitude Hv=3.6
Diameter=1066.6 km assuming a 5% albedo -- 73.2 sec chord
Diameter=435.5 km assuming a 30% albedo -- 29.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 307261, (2029/05/23 07:57UT)
Object            RA         Dec     mag  sep  mel
Tarazed        19:47:39.4 +10:41:13  2.7 15.12 118
36 Aql         19:32:12.0 -02:43:31  5.0  1.29 113
PPM 202925     19:29:25.6 -04:45:22  7.6  1.18 113
PPM 202991     19:33:00.0 -03:50:13  9.3  0.16 114
307261         19:33:03.4 -03:59:36 16.9       114
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 2.1 sigma about the mid-time.
The median site spacing is 25.0 km RECON observability=1.0 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	08:01:46	-16.0	AT	Up	25.6	138.1	Low	07:46:46 - 08:16:46	10566
Kamloops	08:02:32	-18.7	Dark	Up	19.9	124.0	Really Low	07:47:32 - 08:17:32	10182
Kelowna	08:02:31	-19.5	Dark	Up	20.8	124.6	Low	07:47:31 - 08:17:31	10129
Peachland	08:02:32	-19.6	Dark	Up	20.7	124.3	Low	07:47:32 - 08:17:32	10115
Summerland	08:02:33	-19.7	Dark	Up	20.8	124.3	Low	07:47:33 - 08:17:33	10104
Penticton	08:02:32	-19.8	Dark	Up	20.9	124.4	Low	07:47:32 - 08:17:32	10100
Oliver	08:02:33	-20.1	Dark	Up	21.1	124.3	Low	07:47:33 - 08:17:33	10070
Anarchist Mountain Observatory	08:02:33	-20.3	Dark	Up	21.3	124.4	Low	07:47:33 - 08:17:33	10059
Okanogan	08:02:35	-21.0	Dark	Up	21.6	124.0	Low	07:47:35 - 08:17:35	9999
Brewster	08:02:37	-21.2	Dark	Up	21.6	123.8	Low	07:47:37 - 08:17:37	9971
Manson/Chelan	08:02:39	-21.5	Dark	Up	21.5	123.4	Low	07:47:39 - 08:17:39	9946
Victoria	08:02:45	-20.8	Dark	Up	19.4	120.7	Really Low	07:47:45 - 08:17:45	9944
Wenatchee	08:02:40	-21.9	Dark	Up	21.7	123.1	Low	07:47:40 - 08:17:40	9902
Ellensburg	08:02:41	-22.3	Dark	Up	21.8	122.7	Low	07:47:41 - 08:17:41	9861
Yakima	08:02:42	-22.7	Dark	Up	22.0	122.6	Low	07:47:42 - 08:17:42	9825
Toppenish/White Swan	08:02:43	-23.0	Dark	Up	22.2	122.7	Low	07:47:43 - 08:17:43	9809
PNWRO	08:02:39	-23.3	Dark	Up	23.3	123.8	Low	07:47:39 - 08:17:39	9805
The Dalles	08:02:46	-23.7	Dark	Up	22.2	121.7	Low	07:47:46 - 08:17:46	9724
Maupin	08:02:48	-24.2	Dark	Up	22.5	121.7	Low	07:47:48 - 08:17:48	9688
Sisters	08:02:51	-25.0	Dark	Up	22.6	120.9	Low	07:47:51 - 08:17:51	9599
Dunrhomin	08:02:01	-27.3	Dark	Up	34.6	134.1	Up	07:47:01 - 08:17:01	9593
Bend	08:02:50	-25.3	Dark	Up	22.9	121.1	Low	07:47:50 - 08:17:50	9582
Nikitin	08:02:01	-27.4	Dark	Up	34.7	134.0	Up	07:47:01 - 08:17:01	9576
CU-SBO	08:02:02	-27.5	Dark	Up	34.7	133.9	Up	07:47:02 - 08:17:02	9568
Oregon Observatory	08:02:51	-25.5	Dark	Up	22.9	120.9	Low	07:47:51 - 08:17:51	9564
Chiloquin	08:02:56	-26.8	Dark	Up	23.4	120.1	Low	07:47:56 - 08:17:56	9433
Klamath Falls	08:02:56	-27.1	Dark	Up	23.6	120.0	Low	07:47:56 - 08:17:56	9403
Cedarville	08:02:52	-27.8	Dark	Up	25.0	121.1	Low	07:47:52 - 08:17:52	9370
Fall River/Burney	08:02:57	-28.3	Dark	Up	24.4	119.9	Low	07:47:57 - 08:17:57	9300
Gimple	08:02:57	-29.2	Dark	Up	25.2	120.0	Low	07:47:57 - 08:17:57	9224
Greenville	08:02:57	-29.2	Dark	Up	25.2	119.9	Low	07:47:57 - 08:17:57	9223
Quincy	08:02:57	-29.4	Dark	Up	25.3	119.8	Low	07:47:57 - 08:17:57	9204
Portola	08:02:56	-29.5	Dark	Up	25.6	120.2	Low	07:47:56 - 08:17:56	9202
Reno	08:02:54	-29.8	Dark	Up	26.2	120.6	Low	07:47:54 - 08:17:54	9190
Carson City	08:02:56	-30.1	Dark	Up	26.4	120.5	Low	07:47:56 - 08:17:56	9156
Yerington	08:02:54	-30.3	Dark	Up	26.9	120.9	Low	07:47:54 - 08:17:54	9151
Gardnerville	08:02:56	-30.4	Dark	Up	26.6	120.4	Low	07:47:56 - 08:17:56	9134
Hawthorne	08:02:52	-30.8	Dark	Up	27.5	121.1	Low	07:47:52 - 08:17:52	9118
Lee Vining	08:02:54	-31.3	Dark	Up	27.5	120.5	Low	07:47:54 - 08:17:54	9054
Bishop	08:02:54	-31.9	Dark	Up	28.3	120.8	Low	07:47:54 - 08:17:54	9012
Beatty	08:02:48	-32.3	Dark	Up	29.6	121.9	Low	07:47:48 - 08:17:48	9004
Patrick	08:02:40	-33.5	Dark	Up	32.4	123.6	Up	07:47:40 - 08:17:40	8928
Laughlin/Bullhead City	08:02:42	-33.8	Dark	Up	32.0	122.9	Up	07:47:42 - 08:17:42	8886
Lake Havasu City	08:02:40	-34.4	Dark	Up	32.6	122.7	Up	07:47:40 - 08:17:40	8827
George/Scottsdale	08:02:33	-34.9	Dark	Up	34.7	124.4	Up	07:47:33 - 08:17:33	8812
Idyllwild	08:02:52	-35.4	Dark	Up	31.3	120.4	Up	07:47:52 - 08:17:52	8695
Wildwood	08:02:58	-35.2	Dark	Up	29.8	119.1	Low	07:47:58 - 08:17:58	8686
Calipatria	08:02:49	-35.9	Dark	Up	32.5	121.0	Up	07:47:49 - 08:17:49	8663
Yuma	08:02:42	-36.3	Dark	Up	33.3	121.5	Up	07:47:42 - 08:17:42	8642

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 307261, (2029/05/23 07:57UT)
Object            RA         Dec     mag  sep  mel
Tarazed        19:46:15.6 +10:36:48  2.7 15.12 118
36 Aql         19:30:39.9 -02:47:20  5.0  1.29 113
PPM 202925     19:27:52.2 -04:49:04  7.6  1.18 113
PPM 202991     19:31:27.2 -03:54:04  9.3  0.16 114
307261         19:31:30.5 -04:03:27 16.9       114
Positions are for J2000

Event circumstances last updated at 2024/03/08 03:30:36 UT

RECON