RECON: TNO occultation with 527604

Event between (527604) 07VL305 and star GA0840:00614366 with event index number of 2593753

Geocentric closest approach at 2027/12/12 09:57:46 UTC

J2000 position of star is 05:27:36.0 -04:42:17
Equinox of date position of star is 05:28:47.1 -04:41:11
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 36 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=23.1

[RECON map]
Object is 28.5 AU from the Sun and 27.6 AU from the Earth.
Apparent velocity is 24.6 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 153 seconds.
The 1-sigma cross-track error in the shadow position is 1069 km.
The sky-plane scale is 20021.5 km/arcsec.

The object has an absolute magnitude Hv=8.5
Diameter=119.7 km assuming a 5% albedo -- 5.0 sec chord
Diameter=48.9 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is 1:1
 
 
 
 
 
 

Star training set for 527604, (2027/12/12 10:04UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:52.9 -08:10:17  0.1  4.77  38
34Del Ori      05:33:26.1 -00:16:50  2.2  4.54  33
PPM 188111     05:30:47.4 -03:25:34  5.6  1.34  36
PPM 188092     05:29:56.1 -04:40:35  7.6  0.24  36
527604         05:28:58.9 -04:41:00 16.5        37
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 26.4 km RECON observability=1.0 and success probability=0.1%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	09:56:10	-53.8	Dark	Up	29.7	212.2	Low	09:42:55 - 10:09:26	3245
Sleaford	09:55:40	-45.4	Dark	Up	23.0	226.4	Low	09:42:24 - 10:08:55	3212
Kelowna	09:56:07	-53.8	Dark	Up	30.1	213.4	Up	09:42:51 - 10:09:22	3181
Peachland	09:56:08	-54.0	Dark	Up	30.3	213.1	Up	09:42:52 - 10:09:23	3176
Summerland	09:56:08	-54.1	Dark	Up	30.4	213.3	Up	09:42:52 - 10:09:23	3165
Penticton	09:56:07	-54.0	Dark	Up	30.4	213.4	Up	09:42:51 - 10:09:22	3159
Oliver	09:56:07	-54.3	Dark	Up	30.7	213.5	Up	09:42:51 - 10:09:22	3135
Victoria	09:56:16	-56.6	Dark	Up	32.6	209.5	Up	09:43:00 - 10:09:31	3124
Anarchist Mountain Observatory	09:56:06	-54.2	Dark	Up	30.8	213.8	Up	09:42:50 - 10:09:21	3121
Okanogan	09:56:05	-54.7	Dark	Up	31.4	213.8	Up	09:42:50 - 10:09:21	3077
Brewster	09:56:06	-55.0	Dark	Up	31.7	213.6	Up	09:42:50 - 10:09:21	3060
Manson/Chelan	09:56:07	-55.3	Dark	Up	32.0	213.3	Up	09:42:51 - 10:09:22	3048
Wenatchee	09:56:06	-55.7	Dark	Up	32.5	213.3	Up	09:42:51 - 10:09:22	3016
Ellensburg	09:56:06	-56.0	Dark	Up	32.9	213.2	Up	09:42:51 - 10:09:22	2988
Yakima	09:56:06	-56.3	Dark	Up	33.2	213.3	Up	09:42:50 - 10:09:21	2958
Toppenish/White Swan	09:56:05	-56.3	Dark	Up	33.4	213.6	Up	09:42:50 - 10:09:21	2940
PNWRO	09:56:00	-55.6	Dark	Up	33.1	215.3	Up	09:42:45 - 10:09:16	2898
The Dalles	09:56:06	-57.2	Dark	Up	34.3	213.0	Up	09:42:51 - 10:09:22	2890
Maupin	09:56:06	-57.4	Dark	Up	34.6	213.3	Up	09:42:50 - 10:09:21	2858
Sisters	09:56:06	-58.1	Dark	Up	35.6	213.0	Up	09:42:50 - 10:09:21	2796
Bend	09:56:05	-58.1	Dark	Up	35.7	213.4	Up	09:42:50 - 10:09:21	2775
Oregon Observatory	09:56:05	-58.3	Dark	Up	35.9	213.3	Up	09:42:50 - 10:09:21	2763
Chiloquin	09:56:05	-59.2	Dark	Up	37.1	213.4	Up	09:42:49 - 10:09:20	2665
Klamath Falls	09:56:04	-59.3	Dark	Up	37.4	213.6	Up	09:42:49 - 10:09:20	2637
Cedarville	09:55:59	-58.6	Dark	Up	37.3	215.7	Up	09:42:44 - 10:09:15	2564
Fall River/Burney	09:56:02	-59.6	Dark	Up	38.2	214.6	Up	09:42:47 - 10:09:18	2538
Greenville	09:56:00	-59.7	Dark	Up	38.7	215.5	Up	09:42:45 - 10:09:16	2459
Gimple	09:56:00	-59.7	Dark	Up	38.7	215.6	Up	09:42:44 - 10:09:15	2458
Quincy	09:56:00	-59.8	Dark	Up	38.9	215.6	Up	09:42:44 - 10:09:15	2443
Portola	09:55:58	-59.6	Dark	Up	38.8	216.2	Up	09:42:42 - 10:09:13	2427
Reno	09:55:56	-59.2	Dark	Up	38.7	217.0	Up	09:42:41 - 10:09:12	2398
Carson City	09:55:55	-59.3	Dark	Up	39.0	217.2	Up	09:42:40 - 10:09:11	2368
Gardnerville	09:55:55	-59.4	Dark	Up	39.2	217.4	Up	09:42:40 - 10:09:11	2347
Yerington	09:55:53	-59.0	Dark	Up	38.8	218.0	Up	09:42:38 - 10:09:09	2345
Hawthorne	09:55:51	-58.7	Dark	Up	39.0	218.9	Up	09:42:36 - 10:09:07	2300
Dunrhomin	09:55:16	-48.4	Dark	Up	30.4	231.5	Up	09:42:01 - 10:08:32	2297
Nikitin	09:55:16	-48.4	Dark	Up	30.6	231.6	Up	09:42:00 - 10:08:31	2282
CU-SBO	09:55:16	-48.5	Dark	Up	30.7	231.5	Up	09:42:00 - 10:08:31	2278
Lee Vining	09:55:52	-59.3	Dark	Up	39.6	218.6	Up	09:42:37 - 10:09:08	2258
Bishop	09:55:49	-59.0	Dark	Up	39.7	219.7	Up	09:42:34 - 10:09:05	2198
Beatty	09:55:44	-57.9	Dark	Up	39.3	221.7	Up	09:42:28 - 10:08:59	2139
Patrick	09:55:34	-56.0	Dark	Up	38.7	225.6	Up	09:42:18 - 10:08:49	1975
Laughlin/Bullhead City	09:55:36	-56.6	Dark	Up	39.3	225.0	Up	09:42:20 - 10:08:51	1962
Wildwood	09:55:47	-60.0	Dark	Up	42.3	221.3	Up	09:42:32 - 10:09:03	1913
Lake Havasu City	09:55:34	-56.5	Dark	Up	39.7	225.7	Up	09:42:18 - 10:08:49	1898
Idyllwild	09:55:41	-58.6	Dark	Up	41.6	223.6	Up	09:42:25 - 10:08:56	1859
George/Scottsdale	09:55:26	-54.6	Dark	Up	38.7	228.6	Up	09:42:10 - 10:08:41	1799
Calipatria	09:55:36	-57.7	Dark	Up	41.3	225.2	Up	09:42:21 - 10:08:52	1789
Yuma	09:55:33	-57.0	Dark	Up	41.1	226.5	Up	09:42:18 - 10:08:49	1738

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 527604, (2027/12/12 10:04UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  4.77  38
34Del Ori      05:32:00.4 -00:17:57  2.2  4.54  33
PPM 188111     05:29:23.7 -03:26:47  5.6  1.34  36
PPM 188092     05:28:33.2 -04:41:50  7.6  0.24  36
527604         05:27:36.0 -04:42:17 16.5        36
Positions are for J2000

Event circumstances last updated at 2023/12/24 04:36:13 UT

RECON