RECON: TNO occultation with 24835

Event between (24835) 95SM55 and star GA1280:00974403 with event index number of 1212146

Geocentric closest approach at 2023/01/10 02:02:09 UTC

J2000 position of star is 03:34:11.4 +38:32:47
Equinox of date position of star is 03:35:41.9 +38:37:19
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 82 degrees from the moon. Moon is 91% illuminated.
Apparent brightness V=20.6

[RECON map]
Object is 37.8 AU from the Sun and 37.2 AU from the Earth.
Apparent velocity is 16.3 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 113 seconds.
The 1-sigma cross-track error in the shadow position is 1783 km.
The sky-plane scale is 26982.2 km/arcsec.

The object has an absolute magnitude Hv=4.7
Diameter=704.7 km assuming a 5% albedo -- 43.1 sec chord
Diameter=287.7 km assuming a 30% albedo -- 17.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 24835, (2023/01/10 02:00UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.7 +16:33:14  0.8 25.86  74
Algol          03:09:40.6 +41:02:34  2.1  5.55  86
PPM 068571     03:35:06.5 +39:58:32  5.8  1.36  81
PPM 068595     03:36:37.0 +38:39:40  7.2  0.18  81
PPM 068580     03:35:36.9 +38:32:35  9.6  0.08  82
24835          03:35:42.0 +38:37:20 14.9        81
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 22.9 km RECON observability=0.4 and success probability=7.2%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Victoria	02:03:28	-13.5	AT	Down	61.9	96.9	Up	01:53:32 - 02:13:24	4965
Kamloops	02:03:08	-16.0	AT	Down	63.4	103.9	Up	01:53:12 - 02:13:04	4920
Peachland	02:03:12	-16.1	AT	Down	64.0	102.8	Up	01:53:16 - 02:13:08	4835
Kelowna	02:03:10	-16.4	AT	Down	64.1	103.3	Up	01:53:14 - 02:13:06	4825
Summerland	02:03:13	-16.2	AT	Down	64.1	102.6	Up	01:53:17 - 02:13:09	4821
Penticton	02:03:13	-16.2	AT	Down	64.2	102.6	Up	01:53:17 - 02:13:09	4811
Oliver	02:03:15	-16.1	AT	Down	64.2	101.9	Up	01:53:19 - 02:13:11	4790
Anarchist Mountain Observatory	02:03:16	-16.2	AT	Down	64.4	101.7	Up	01:53:20 - 02:13:12	4770
Manson/Chelan	02:03:24	-15.4	AT	Down	64.1	98.7	Up	01:53:28 - 02:13:20	4747
Okanogan	02:03:20	-15.9	AT	Down	64.4	100.2	Up	01:53:24 - 02:13:16	4744
Brewster	02:03:22	-15.7	AT	Down	64.3	99.4	Up	01:53:26 - 02:13:18	4739
Wenatchee	02:03:27	-15.2	AT	Down	64.1	97.6	Up	01:53:31 - 02:13:23	4728
Ellensburg	02:03:30	-14.9	AT	Down	64.0	96.5	Up	01:53:34 - 02:13:26	4717
Yakima	02:03:33	-14.8	AT	Down	64.0	95.7	Up	01:53:37 - 02:13:29	4693
Toppenish/White Swan	02:03:34	-14.9	AT	Down	64.2	95.4	Up	01:53:38 - 02:13:30	4670
The Dalles	02:03:40	-14.1	AT	Down	63.7	93.2	Up	01:53:44 - 02:13:36	4670
Maupin	02:03:42	-14.1	AT	Down	63.8	92.4	Up	01:53:46 - 02:13:38	4638
Sisters	02:03:48	-13.5	AT	Down	63.5	90.3	Up	01:53:52 - 02:13:44	4615
Bend	02:03:49	-13.6	AT	Down	63.7	90.0	Up	01:53:53 - 02:13:45	4585
Oregon Observatory	02:03:50	-13.5	AT	Down	63.6	89.6	Up	01:53:54 - 02:13:46	4582
PNWRO	02:03:32	-15.8	AT	Down	65.2	95.9	Up	01:53:36 - 02:13:28	4562
Chiloquin	02:03:59	-12.8	AT	Down	63.2	86.7	Up	01:54:03 - 02:13:55	4527
Klamath Falls	02:04:00	-12.8	AT	Down	63.3	86.1	Up	01:54:04 - 02:13:56	4501
Fall River/Burney	02:04:06	-12.7	AT	Down	63.5	83.9	Up	01:54:10 - 02:14:02	4403
Cedarville	02:04:00	-13.7	AT	Down	64.4	85.6	Up	01:54:04 - 02:13:56	4357
Greenville	02:04:10	-12.7	AT	Down	63.7	82.3	Up	01:54:14 - 02:14:06	4317
Gimple	02:04:10	-12.8	AT	Down	63.8	82.4	Up	01:54:14 - 02:14:06	4311
Quincy	02:04:11	-12.7	AT	Down	63.7	81.9	Up	01:54:15 - 02:14:07	4304
Sleaford	02:02:24	-25.0	Dark	Up	70.8	127.2	Up	01:52:28 - 02:12:20	4280
Portola	02:04:10	-13.0	AT	Down	64.1	81.9	Up	01:54:14 - 02:14:06	4265
Reno	02:04:10	-13.4	AT	Down	64.5	81.6	Up	01:54:14 - 02:14:06	4206
Carson City	02:04:12	-13.3	AT	Down	64.5	80.9	Up	01:54:16 - 02:14:08	4181
Gardnerville	02:04:14	-13.3	AT	Down	64.5	80.4	Up	01:54:18 - 02:14:10	4162
Yerington	02:04:12	-13.7	AT	Down	64.9	80.7	Up	01:54:16 - 02:14:08	4127
Hawthorne	02:04:13	-14.0	AT	Down	65.3	79.9	Up	01:54:17 - 02:14:09	4062
Lee Vining	02:04:17	-13.4	AT	Down	64.8	78.6	Up	01:54:21 - 02:14:13	4056
Bishop	02:04:18	-13.8	AT	Down	65.2	77.5	Up	01:54:22 - 02:14:14	3968
Beatty	02:04:16	-14.9	AT	Down	66.4	76.8	Up	01:54:20 - 02:14:12	3829
Wildwood	02:04:36	-12.7	AT	Down	64.2	70.8	Up	01:54:40 - 02:14:32	3756
Idyllwild	02:04:32	-14.1	AT	Down	65.6	70.0	Up	01:54:36 - 02:14:28	3602
Laughlin/Bullhead City	02:04:18	-16.1	AT	Down	67.7	73.1	Up	01:54:22 - 02:14:14	3561
Patrick	02:04:14	-16.8	AT	Down	68.3	73.7	Up	01:54:18 - 02:14:10	3532
Lake Havasu City	02:04:20	-16.2	AT	Down	67.7	71.5	Up	01:54:24 - 02:14:16	3495
Calipatria	02:04:31	-14.9	AT	Down	66.3	68.6	Up	01:54:35 - 02:14:27	3477
Yuma	02:04:31	-15.4	AT	Down	66.8	67.5	Up	01:54:35 - 02:14:27	3385
Dunrhomin	02:03:21	-24.3	Dark	Down	75.6	90.8	Up	01:53:25 - 02:13:17	3354
Nikitin	02:03:22	-24.3	Dark	Down	75.6	90.1	Up	01:53:26 - 02:13:18	3341
CU-SBO	02:03:23	-24.2	Dark	Down	75.5	89.8	Up	01:53:27 - 02:13:19	3341
George/Scottsdale	02:04:17	-17.9	AT	Down	69.3	69.3	Up	01:54:21 - 02:14:13	3273

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 24835, (2023/01/10 02:00UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 25.86  74
Algol          03:08:10.1 +40:57:20  2.1  5.55  86
PPM 068571     03:33:35.0 +39:53:58  5.8  1.36  81
PPM 068595     03:35:06.3 +38:35:08  7.2  0.18  81
PPM 068580     03:34:06.3 +38:28:02  9.6  0.08  82
24835          03:34:11.4 +38:32:47 14.9        82
Positions are for J2000

Event circumstances last updated at 2022/12/24 03:39:31 UT

RECON