RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star GA1260:03039190 with event index number of 2200410

Geocentric closest approach at 2023/02/08 07:00:23 UTC

J2000 position of star is 07:03:19.1 +37:18:56
Equinox of date position of star is 07:04:52.5 +37:16:48
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 64 degrees from the moon. Moon is 94% illuminated.
Apparent brightness V=20.5

[RECON map]
Object is 15.3 AU from the Sun and 14.5 AU from the Earth.
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 6.4 arcsec/hr.
The 1-sigma error in the time of the event is 40 seconds.
The 1-sigma cross-track error in the shadow position is 636 km.
The sky-plane scale is 10512.0 km/arcsec.

The object has an absolute magnitude Hv=8.5
Diameter=118.6 km assuming a 5% albedo -- 6.4 sec chord
Diameter=48.4 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 341275, (2023/02/08 07:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:43.7 +27:58:07  1.1 12.80  54
62 Aur         07:00:37.1 +38:01:06  6.0  1.12  65
PPM 072381     07:05:11.1 +37:17:41  8.0  0.06  64
341275         07:04:52.7 +37:16:48 16.9        64
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 38.0 km RECON observability=1.0 and success probability=67.7%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	06:58:09	-52.8	Dark	Up	63.8	247.9	Up	06:54:17 - 07:02:01	509
Kamloops	06:58:59	-51.2	Dark	Up	72.1	228.1	Up	06:55:07 - 07:02:51	420
Kelowna	06:58:56	-52.2	Dark	Up	72.2	231.8	Up	06:55:04 - 07:02:48	323
Peachland	06:58:57	-52.2	Dark	Up	72.4	231.5	Up	06:55:05 - 07:02:49	314
Summerland	06:58:57	-52.3	Dark	Up	72.5	232.1	Up	06:55:05 - 07:02:49	297
Penticton	06:58:57	-52.4	Dark	Up	72.5	232.4	Up	06:55:05 - 07:02:49	288
Oliver	06:58:57	-52.7	Dark	Up	72.7	233.3	Up	06:55:05 - 07:02:49	250
Anarchist Mountain Observatory	06:58:56	-52.9	Dark	Up	72.7	234.2	Up	06:55:04 - 07:02:48	229
Victoria	06:59:12	-51.9	Dark	Up	75.0	226.7	Up	06:55:20 - 07:03:04	222
Okanogan	06:58:58	-53.4	Dark	Up	73.2	235.5	Up	06:55:06 - 07:02:50	161
Brewster	06:58:58	-53.6	Dark	Up	73.4	235.8	Up	06:55:06 - 07:02:50	134
Manson/Chelan	06:59:00	-53.6	Dark	Up	73.7	235.7	Up	06:55:08 - 07:02:52	115
Wenatchee	06:59:01	-54.0	Dark	Up	74.1	236.7	Up	06:55:09 - 07:02:53	65
Ellensburg	06:59:02	-54.2	Dark	Up	74.4	237.5	Up	06:55:10 - 07:02:54	22
Yakima	06:59:02	-54.6	Dark	Up	74.7	238.7	Up	06:55:10 - 07:02:54	-22
Toppenish/White Swan	06:59:02	-54.8	Dark	Up	74.7	239.7	Up	06:55:10 - 07:02:54	-48
PNWRO	06:58:56	-55.7	Dark	Up	74.0	243.7	Up	06:55:04 - 07:02:48	-104
The Dalles	06:59:06	-55.2	Dark	Up	75.5	240.7	Up	06:55:14 - 07:02:58	-124
Maupin	06:59:05	-55.5	Dark	Up	75.7	242.3	Up	06:55:13 - 07:02:57	-171
Sisters	06:59:08	-56.1	Dark	Up	76.4	244.5	Up	06:55:16 - 07:03:00	-261
Bend	06:59:07	-56.4	Dark	Up	76.3	245.9	Up	06:55:15 - 07:02:59	-291
Oregon Observatory	06:59:08	-56.4	Dark	Up	76.5	246.3	Up	06:55:16 - 07:03:00	-308
Chiloquin	06:59:11	-57.3	Dark	Up	77.2	250.8	Up	06:55:19 - 07:03:03	-447
Klamath Falls	06:59:11	-57.6	Dark	Up	77.3	252.4	Up	06:55:19 - 07:03:03	-486
Cedarville	06:59:04	-58.9	Dark	Up	76.3	257.6	Up	06:55:12 - 07:02:56	-582
Fall River/Burney	06:59:10	-58.7	Dark	Up	77.3	258.0	Up	06:55:18 - 07:03:02	-620
Greenville	06:59:09	-59.6	Dark	Up	77.1	262.5	Up	06:55:17 - 07:03:01	-725
Gimple	06:59:09	-59.6	Dark	Up	77.1	262.6	Up	06:55:17 - 07:03:01	-727
Quincy	06:59:09	-59.8	Dark	Up	77.1	263.4	Up	06:55:17 - 07:03:01	-748
Portola	06:59:07	-60.1	Dark	Up	76.8	264.4	Up	06:55:15 - 07:02:59	-767
Dunrhomin	06:58:02	-64.5	Dark	Up	65.3	273.5	Up	06:54:10 - 07:01:54	-797
Reno	06:59:04	-60.6	Dark	Up	76.3	266.1	Up	06:55:12 - 07:02:56	-805
Nikitin	06:58:02	-64.7	Dark	Up	65.3	273.8	Up	06:54:10 - 07:01:54	-818
CU-SBO	06:58:03	-64.8	Dark	Up	65.3	273.9	Up	06:54:11 - 07:01:55	-825
Carson City	06:59:05	-60.9	Dark	Up	76.3	267.6	Up	06:55:13 - 07:02:57	-844
Gardnerville	06:59:05	-61.1	Dark	Up	76.3	268.6	Up	06:55:13 - 07:02:57	-872
Yerington	06:59:02	-61.4	Dark	Up	75.8	268.8	Up	06:55:10 - 07:02:54	-873
Hawthorne	06:59:00	-62.0	Dark	Up	75.4	271.0	Up	06:55:08 - 07:02:52	-930
Lee Vining	06:59:03	-62.2	Dark	Up	75.8	272.9	Up	06:55:11 - 07:02:55	-987
Bishop	06:59:00	-63.0	Dark	Up	75.2	275.5	Up	06:55:08 - 07:02:52	-1061
Beatty	06:58:53	-64.1	Dark	Up	73.9	277.6	Up	06:55:01 - 07:02:45	-1128
Patrick	06:58:41	-66.7	Dark	Up	71.3	282.7	Up	06:54:49 - 07:02:33	-1315
Laughlin/Bullhead City	06:58:44	-66.6	Dark	Up	71.8	283.4	Up	06:54:52 - 07:02:36	-1337
Lake Havasu City	06:58:44	-67.2	Dark	Up	71.5	285.3	Up	06:54:52 - 07:02:36	-1412
Wildwood	06:59:03	-65.4	Dark	Up	74.7	287.4	Up	06:55:11 - 07:02:55	-1417
Idyllwild	06:58:55	-66.7	Dark	Up	73.1	288.0	Up	06:55:03 - 07:02:47	-1476
George/Scottsdale	06:58:33	-69.0	Dark	Up	69.3	287.2	Up	06:54:41 - 07:02:25	-1512
Calipatria	06:58:50	-67.7	Dark	Up	72.0	289.5	Up	06:54:58 - 07:02:42	-1553
Yuma	06:58:46	-68.5	Dark	Up	71.2	290.5	Up	06:54:54 - 07:02:38	-1608

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 341275, (2023/02/08 07:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 12.80  54
62 Aur         06:59:02.8 +38:03:06  6.0  1.12  65
PPM 072381     07:03:37.4 +37:19:50  8.0  0.06  64
341275         07:03:19.1 +37:18:56 16.9        64
Positions are for J2000

Event circumstances last updated at 2023/01/23 03:11:10 UT

RECON