RECON: TNO occultation with 60558

Event between (60558) Echeclus and star GA1060:03055771 with event index number of 2337530

Geocentric closest approach at 2024/12/08 10:28:34 UTC

J2000 position of star is 08:11:20.1 +16:10:26
Equinox of date position of star is 08:12:42.5 +16:06:02
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 137 degrees from the moon. Moon is 48% illuminated.
Apparent brightness V=20.6

[RECON map]
Object is 13.3 AU from the Sun and 12.5 AU from the Earth.
Apparent velocity is 15.2 km/sec on the sky relative to the star, or, 6.0 arcsec/hr.
The 1-sigma error in the time of the event is 33 seconds.
The 1-sigma cross-track error in the shadow position is 457 km.
The sky-plane scale is 9098.6 km/arcsec.

The object has an absolute magnitude Hv=9.2
Diameter=88.3 km assuming a 5% albedo -- 5.7 sec chord
Diameter=36.1 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 60558, (2024/12/08 10:29UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.5 +27:57:50  1.1 13.29 129
16Zet2Cnc      08:13:38.5 +17:34:16  5.2  1.49 137
PPM 124959     08:12:20.8 +16:16:54  8.5  0.21 137
PPM 124979     08:13:13.5 +16:01:19  8.9  0.14 137
60558          08:12:44.9 +16:05:54 15.8       137
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=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	10:28:44	-40.1	Dark	Down	53.8	189.9	Up	10:25:32 - 10:31:57	3933
Kamloops	10:29:40	-48.9	Dark	Down	54.9	166.4	Up	10:26:28 - 10:32:53	3668
Kelowna	10:29:40	-48.7	Dark	Down	55.8	167.6	Up	10:26:28 - 10:32:53	3598
Peachland	10:29:40	-49.0	Dark	Down	55.9	167.1	Up	10:26:28 - 10:32:53	3585
Summerland	10:29:40	-49.0	Dark	Down	56.0	167.2	Up	10:26:28 - 10:32:53	3572
Penticton	10:29:40	-48.9	Dark	Down	56.1	167.4	Up	10:26:28 - 10:32:53	3567
Oliver	10:29:40	-49.1	Dark	Down	56.5	167.2	Up	10:26:28 - 10:32:53	3534
Anarchist Mountain Observatory	10:29:40	-49.1	Dark	Down	56.7	167.5	Up	10:26:28 - 10:32:53	3519
Okanogan	10:29:40	-49.5	Dark	Down	57.3	166.9	Up	10:26:28 - 10:32:53	3457
Victoria	10:30:02	-51.6	Dark	Down	56.4	160.5	Up	10:26:49 - 10:33:14	3442
Brewster	10:29:40	-49.7	Dark	Down	57.5	166.5	Up	10:26:28 - 10:32:53	3430
Manson/Chelan	10:29:40	-50.0	Dark	Down	57.6	165.7	Up	10:26:28 - 10:32:53	3408
Wenatchee	10:29:40	-50.3	Dark	Down	58.1	165.2	Up	10:26:28 - 10:32:53	3361
Ellensburg	10:29:40	-50.6	Dark	Down	58.4	164.7	Up	10:26:28 - 10:32:53	3321
Yakima	10:29:40	-50.8	Dark	Down	58.8	164.5	Up	10:26:28 - 10:32:53	3282
Toppenish/White Swan	10:29:40	-50.8	Dark	Down	59.0	164.7	Up	10:26:28 - 10:32:53	3262
PNWRO	10:29:40	-50.0	Dark	Down	59.7	167.3	Up	10:26:27 - 10:32:52	3237
The Dalles	10:29:40	-51.6	Dark	Down	59.6	162.8	Up	10:26:28 - 10:32:53	3183
Maupin	10:29:40	-51.7	Dark	Down	60.1	162.8	Up	10:26:28 - 10:32:53	3142
Sisters	10:29:53	-52.3	Dark	Down	60.8	161.5	Up	10:26:40 - 10:33:05	3048
Bend	10:29:40	-52.3	Dark	Down	61.1	161.8	Up	10:26:28 - 10:32:53	3032
Oregon Observatory	10:29:40	-52.4	Dark	Down	61.2	161.4	Up	10:26:28 - 10:32:53	3015
Chiloquin	10:29:54	-53.1	Dark	Down	62.4	159.9	Up	10:26:42 - 10:33:07	2874
Klamath Falls	10:29:54	-53.2	Dark	Down	62.7	159.8	Up	10:26:42 - 10:33:07	2840
Dunrhomin	10:28:24	-41.7	Dark	Down	65.2	195.7	Up	10:25:11 - 10:31:36	2836
Nikitin	10:28:23	-41.7	Dark	Down	65.4	195.7	Up	10:25:11 - 10:31:36	2817
CU-SBO	10:28:24	-41.7	Dark	Down	65.5	195.6	Up	10:25:11 - 10:31:36	2809
Cedarville	10:29:40	-52.3	Dark	Down	63.7	162.6	Up	10:26:28 - 10:32:53	2786
Fall River/Burney	10:29:40	-53.3	Dark	Down	63.9	159.7	Up	10:26:28 - 10:32:53	2731
Gimple	10:29:40	-53.2	Dark	Down	64.9	160.2	Up	10:26:28 - 10:32:53	2641
Greenville	10:29:40	-53.3	Dark	Down	64.9	160.0	Up	10:26:28 - 10:32:53	2641
Quincy	10:29:40	-53.3	Dark	Down	65.1	159.9	Up	10:26:28 - 10:32:53	2620
Portola	10:29:40	-53.0	Dark	Down	65.3	160.8	Up	10:26:28 - 10:32:53	2610
Reno	10:29:40	-52.6	Dark	Down	65.7	162.1	Up	10:26:28 - 10:32:53	2587
Carson City	10:29:40	-52.7	Dark	Down	66.1	161.9	Up	10:26:28 - 10:32:53	2550
Yerington	10:29:39	-52.3	Dark	Down	66.4	163.2	Up	10:26:27 - 10:32:52	2536
Gardnerville	10:29:40	-52.7	Dark	Down	66.3	161.8	Up	10:26:28 - 10:32:53	2526
Hawthorne	10:29:36	-52.0	Dark	Down	67.0	164.2	Up	10:26:23 - 10:32:48	2494
Lee Vining	10:29:38	-52.5	Dark	Down	67.4	162.6	Up	10:26:26 - 10:32:51	2431
Bishop	10:29:34	-52.0	Dark	Down	68.1	163.9	Up	10:26:22 - 10:32:47	2376
Beatty	10:29:25	-50.8	Dark	Down	68.9	167.8	Up	10:26:12 - 10:32:37	2345
Patrick	10:29:07	-48.8	Dark	Down	70.7	174.9	Up	10:25:55 - 10:32:20	2225
Laughlin/Bullhead City	10:29:11	-49.4	Dark	Down	70.9	172.8	Up	10:25:58 - 10:32:23	2190
Lake Havasu City	10:29:09	-49.2	Dark	Down	71.6	173.3	Up	10:25:56 - 10:32:21	2123
George/Scottsdale	10:28:54	-47.3	Dark	Down	72.5	180.7	Up	10:25:41 - 10:32:06	2074
Wildwood	10:29:34	-52.7	Dark	Down	71.2	160.7	Up	10:26:21 - 10:32:46	2033
Idyllwild	10:29:22	-51.2	Dark	Down	72.0	165.8	Up	10:26:10 - 10:32:35	2016
Calipatria	10:29:15	-50.3	Dark	Down	72.8	169.0	Up	10:26:02 - 10:32:27	1965
Yuma	10:29:09	-49.6	Dark	Down	73.3	171.6	Up	10:25:57 - 10:32:22	1930

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 60558, (2024/12/08 10:29UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 13.29 129
16Zet2Cnc      08:12:13.0 +17:38:50  5.2  1.49 137
PPM 124959     08:10:55.9 +16:21:26  8.5  0.21 137
PPM 124979     08:11:48.8 +16:05:52  8.9  0.14 137
60558          08:11:20.1 +16:10:26 15.8       137
Positions are for J2000

Event circumstances last updated at 2024/03/19 03:36:24 UT

RECON