RECON: TNO occultation with 24835

Event between (24835) 95SM55 and star GA1320:01933605 with event index number of 1949905

Geocentric closest approach at 2028/08/18 11:40:30 UTC

J2000 position of star is 04:29:53.7 +43:16:55
Equinox of date position of star is 04:31:35.5 +43:19:58
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 50 degrees from the moon. Moon is 6% illuminated.
Apparent brightness V=20.5

[RECON map]
Object is 37.6 AU from the Sun and 37.9 AU from the Earth.
Apparent velocity is 17.6 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 197 seconds.
The 1-sigma cross-track error in the shadow position is 3767 km.
The sky-plane scale is 27463.1 km/arcsec.

The object has an absolute magnitude Hv=4.6
Diameter=704.7 km assuming a 5% albedo -- 40.5 sec chord
Diameter=287.7 km assuming a 30% albedo -- 16.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 24835, (2028/08/18 11:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.0 +16:33:53  0.8 26.80  49
3Iot Aur       04:58:51.8 +33:12:31  2.7 11.42  43
59 Per         04:44:56.6 +43:25:00  5.2  2.37  48
PPM 047093     04:29:56.1 +43:23:34  7.4  0.36  50
PPM 047119     04:32:28.5 +43:21:40  9.6  0.10  50
24835          04:31:55.1 +43:20:32 17.0        50
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 4.6 sigma about the mid-time.
The median site spacing is 24.7 km RECON observability=0.6 and success probability=6.0%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Victoria	11:39:47	-14.1	AT	Up	56.4	80.3	Up	11:24:47 - 11:54:47	4244
Sisters	11:39:22	-15.7	AT	Up	56.6	74.9	Up	11:24:22 - 11:54:22	4082
Chiloquin	11:39:12	-17.0	AT	Up	55.9	72.3	Up	11:24:12 - 11:54:12	4077
Kamloops	11:40:01	-11.2	NT	Up	58.6	85.6	Up	11:25:01 - 11:55:01	4075
The Dalles	11:39:30	-14.7	AT	Up	57.2	77.1	Up	11:24:30 - 11:54:30	4072
Oregon Observatory	11:39:19	-15.9	AT	Up	56.6	74.4	Up	11:24:19 - 11:54:19	4068
Klamath Falls	11:39:09	-17.1	AT	Up	55.9	71.9	Up	11:24:09 - 11:54:09	4066
Bend	11:39:21	-15.7	AT	Up	56.7	74.7	Up	11:24:21 - 11:54:21	4061
Maupin	11:39:27	-14.9	AT	Up	57.2	76.5	Up	11:24:27 - 11:54:27	4060
Ellensburg	11:39:38	-13.5	AT	Up	58.0	79.6	Up	11:24:38 - 11:54:38	4048
Yakima	11:39:37	-13.8	AT	Up	57.9	78.9	Up	11:24:37 - 11:54:37	4044
Wenatchee	11:39:41	-13.1	AT	Up	58.2	80.3	Up	11:24:41 - 11:54:41	4039
Manson/Chelan	11:39:44	-12.8	AT	Up	58.4	81.2	Up	11:24:44 - 11:54:44	4033
Toppenish/White Swan	11:39:35	-13.8	AT	Up	58.0	78.7	Up	11:24:35 - 11:54:35	4030
Peachland	11:39:56	-11.4	NT	Up	58.9	84.5	Up	11:24:56 - 11:54:56	4030
Summerland	11:39:55	-11.5	NT	Up	59.0	84.3	Up	11:24:55 - 11:54:55	4022
Fall River/Burney	11:39:01	-17.6	AT	Up	55.7	70.3	Up	11:24:01 - 11:54:01	4020
Penticton	11:39:54	-11.5	NT	Up	59.0	84.3	Up	11:24:54 - 11:54:54	4015
Brewster	11:39:45	-12.4	AT	Up	58.7	81.8	Up	11:24:45 - 11:54:45	4012
Kelowna	11:39:57	-11.2	NT	Up	59.1	84.9	Up	11:24:57 - 11:54:57	4012
Oliver	11:39:53	-11.7	NT	Up	59.0	83.7	Up	11:24:53 - 11:54:53	4011
Okanogan	11:39:48	-12.2	AT	Up	58.9	82.3	Up	11:24:48 - 11:54:48	4003
Anarchist Mountain Observatory	11:39:52	-11.7	NT	Up	59.1	83.5	Up	11:24:52 - 11:54:52	3997
Greenville	11:38:56	-17.9	AT	Up	55.7	69.2	Up	11:23:56 - 11:53:56	3973
Quincy	11:38:53	-18.0	Dark	Up	55.6	68.9	Up	11:23:53 - 11:53:53	3969
Gimple	11:38:56	-17.8	AT	Up	55.8	69.2	Up	11:23:56 - 11:53:56	3967
Cedarville	11:39:05	-16.6	AT	Up	56.8	71.4	Up	11:24:05 - 11:54:05	3942
Portola	11:38:53	-17.8	AT	Up	55.9	68.9	Up	11:23:53 - 11:53:53	3932
PNWRO	11:39:33	-13.2	AT	Up	58.9	78.8	Up	11:24:33 - 11:54:33	3926
Reno	11:38:53	-17.5	AT	Up	56.3	68.6	Up	11:23:53 - 11:53:53	3879
Carson City	11:38:51	-17.7	AT	Up	56.2	68.1	Up	11:23:51 - 11:53:51	3870
Gardnerville	11:38:49	-17.8	AT	Up	56.1	67.8	Up	11:23:49 - 11:53:49	3862
Yerington	11:38:49	-17.4	AT	Up	56.6	68.0	Up	11:23:49 - 11:53:49	3820
Lee Vining	11:38:43	-18.0	AT	Up	56.2	66.6	Up	11:23:43 - 11:53:43	3795
Hawthorne	11:38:46	-17.3	AT	Up	56.8	67.4	Up	11:23:46 - 11:53:46	3770
Bishop	11:38:41	-17.8	AT	Up	56.5	65.8	Up	11:23:41 - 11:53:41	3726
Wildwood	11:38:21	-19.8	Dark	Up	54.8	61.5	Up	11:23:21 - 11:53:21	3662
Beatty	11:38:38	-17.0	AT	Up	57.4	65.3	Up	11:23:38 - 11:53:38	3589
Idyllwild	11:38:19	-18.6	Dark	Up	56.0	61.0	Up	11:23:19 - 11:53:19	3502
Calipatria	11:38:17	-18.1	Dark	Up	56.5	60.2	Up	11:23:17 - 11:53:17	3388
Laughlin/Bullhead City	11:38:28	-16.3	AT	Up	58.2	62.9	Up	11:23:28 - 11:53:28	3371
Lake Havasu City	11:38:25	-16.5	AT	Up	58.1	62.0	Up	11:23:25 - 11:53:25	3331
Patrick	11:38:31	-15.7	AT	Up	58.9	63.3	Up	11:23:31 - 11:53:31	3322
Yuma	11:38:15	-17.6	AT	Up	57.0	59.5	Up	11:23:15 - 11:53:15	3302
Sleaford	11:40:19	-2.7	CT	Up	67.6	100.8	Up	11:25:19 - 11:55:19	3220
George/Scottsdale	11:38:23	-15.1	AT	Up	59.5	60.6	Up	11:23:23 - 11:53:23	3108
Dunrhomin	11:39:08	-7.3	NT	Up	67.2	72.3	Up	11:24:08 - 11:54:08	2799
CU-SBO	11:39:06	-7.5	NT	Up	67.0	71.7	Up	11:24:06 - 11:54:06	2798
Nikitin	11:39:07	-7.4	NT	Up	67.1	71.9	Up	11:24:07 - 11:54:07	2794

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, (2028/08/18 11:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 26.80  49
3Iot Aur       04:56:59.6 +33:09:58  2.7 11.42  43
59 Per         04:42:54.4 +43:21:53  5.2  2.37  48
PPM 047093     04:27:54.7 +43:19:52  7.4  0.36  50
PPM 047119     04:30:27.1 +43:18:04  9.6  0.10  50
24835          04:29:53.7 +43:16:55 17.0        50
Positions are for J2000

Event circumstances last updated at 2024/01/09 04:46:40 UT

RECON