RECON: TNO occultation with 523764

Event between (523764) 14WC510 and star GA0920:02509874 with event index number of 2613656

Geocentric closest approach at 2027/02/15 02:57:40 UTC

J2000 position of star is 07:17:42.2 +02:08:05
Equinox of date position of star is 07:18:57.7 +02:05:22
Stellar brightness G=16.6, 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 59% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 29.7 AU from the Sun and 28.9 AU from the Earth.
Apparent velocity is 19.7 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 138 seconds.
The 1-sigma cross-track error in the shadow position is 1895 km.
The sky-plane scale is 20969.5 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=212.8 km assuming a 5% albedo -- 10.9 sec chord
Diameter=86.9 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523764, (2027/02/15 03:02UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:46:20.7 -16:45:12 -1.5 20.50  57
Alhena         06:39:16.7 +16:22:26  1.9 17.33  35
PPM 152385     07:20:47.4 +02:41:20  5.9  0.74  50
PPM 152289     07:18:01.0 +01:49:41  7.6  0.38  50
PPM 152348     07:19:44.6 +02:04:17  9.9  0.16  50
523764         07:19:06.9 +02:05:02 16.6        51
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 26.3 km RECON observability=1.0 and success probability=31.9%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	03:00:46	-25.8	Dark	Up	35.8	148.3	Up	02:48:44 - 03:12:48	6
Kamloops	03:01:25	-17.1	AT	Up	31.1	132.0	Up	02:49:23 - 03:13:27	-464
Kelowna	03:01:24	-17.7	AT	Up	32.1	132.5	Up	02:49:22 - 03:13:26	-517
Peachland	03:01:25	-17.5	AT	Up	32.1	132.2	Up	02:49:23 - 03:13:27	-533
Summerland	03:01:25	-17.6	AT	Up	32.2	132.2	Up	02:49:23 - 03:13:27	-545
Penticton	03:01:24	-17.6	AT	Up	32.3	132.3	Up	02:49:22 - 03:13:26	-548
Oliver	03:01:25	-17.6	AT	Up	32.5	132.1	Up	02:49:23 - 03:13:27	-580
Anarchist Mountain Observatory	03:01:24	-17.8	AT	Up	32.7	132.3	Up	02:49:22 - 03:13:26	-591
Okanogan	03:01:25	-17.6	AT	Up	33.1	131.7	Up	02:49:23 - 03:13:27	-655
Brewster	03:01:26	-17.5	AT	Up	33.1	131.4	Up	02:49:24 - 03:13:28	-685
Manson/Chelan	03:01:28	-17.2	AT	Up	33.1	130.9	Up	02:49:26 - 03:13:30	-712
Victoria	03:01:35	-15.1	AT	Up	31.0	127.9	Up	02:49:33 - 03:13:37	-728
Wenatchee	03:01:28	-17.1	AT	Up	33.3	130.5	Up	02:49:26 - 03:13:30	-760
Ellensburg	03:01:29	-17.0	AT	Up	33.5	130.1	Up	02:49:27 - 03:13:31	-804
Yakima	03:01:29	-17.0	AT	Up	33.7	129.8	Up	02:49:27 - 03:13:31	-842
PNWRO	03:01:25	-18.1	Dark	Up	35.0	131.2	Up	02:49:23 - 03:13:27	-856
Toppenish/White Swan	03:01:29	-17.1	AT	Up	34.0	129.9	Up	02:49:27 - 03:13:31	-858
The Dalles	03:01:31	-16.5	AT	Up	34.0	128.7	Up	02:49:29 - 03:13:33	-951
Maupin	03:01:31	-16.6	AT	Up	34.3	128.6	Up	02:49:29 - 03:13:33	-988
Dunrhomin	03:00:42	-28.4	Dark	Up	45.9	143.4	Up	02:48:40 - 03:12:44	-994
Nikitin	03:00:41	-28.4	Dark	Up	46.0	143.3	Up	02:48:39 - 03:12:43	-1011
CU-SBO	03:00:42	-28.3	Dark	Up	46.0	143.2	Up	02:48:40 - 03:12:44	-1020
Sisters	03:01:33	-16.2	AT	Up	34.6	127.6	Up	02:49:31 - 03:13:35	-1083
Bend	03:01:32	-16.4	AT	Up	34.9	127.7	Up	02:49:30 - 03:13:34	-1100
Oregon Observatory	03:01:33	-16.3	AT	Up	34.9	127.5	Up	02:49:31 - 03:13:35	-1119
Chiloquin	03:01:35	-15.9	AT	Up	35.5	126.4	Up	02:49:33 - 03:13:37	-1257
Klamath Falls	03:01:35	-16.0	AT	Up	35.8	126.3	Up	02:49:33 - 03:13:37	-1288
Cedarville	03:01:31	-17.1	AT	Up	37.1	127.4	Up	02:49:29 - 03:13:33	-1314
Fall River/Burney	03:01:34	-16.2	AT	Up	36.7	125.9	Up	02:49:32 - 03:13:36	-1393
Gimple	03:01:32	-16.5	AT	Up	37.5	125.9	Up	02:49:30 - 03:13:34	-1469
Greenville	03:01:33	-16.5	AT	Up	37.5	125.8	Up	02:49:31 - 03:13:35	-1471
Portola	03:01:31	-16.8	AT	Up	38.0	126.1	Up	02:49:29 - 03:13:33	-1490
Quincy	03:01:33	-16.5	AT	Up	37.6	125.7	Up	02:49:31 - 03:13:35	-1491
Reno	03:01:30	-17.3	AT	Up	38.5	126.6	Up	02:49:28 - 03:13:32	-1499
Carson City	03:01:29	-17.3	AT	Up	38.7	126.3	Up	02:49:27 - 03:13:31	-1534
Yerington	03:01:28	-17.8	AT	Up	39.3	126.9	Up	02:49:26 - 03:13:30	-1535
Gardnerville	03:01:30	-17.3	AT	Up	38.9	126.2	Up	02:49:28 - 03:13:32	-1556
Hawthorne	03:01:26	-18.2	Dark	Up	39.9	127.1	Up	02:49:24 - 03:13:28	-1566
Lee Vining	03:01:28	-17.8	AT	Up	39.9	126.2	Up	02:49:26 - 03:13:30	-1636
Beatty	03:01:21	-19.6	Dark	Up	42.0	127.9	Up	02:49:19 - 03:13:23	-1673
Bishop	03:01:26	-18.3	Dark	Up	40.7	126.5	Up	02:49:24 - 03:13:28	-1675
Patrick	03:01:09	-21.9	Dark	Up	44.7	129.8	Up	02:49:07 - 03:13:11	-1732
Laughlin/Bullhead City	03:01:12	-21.3	Dark	Up	44.5	128.9	Up	02:49:10 - 03:13:14	-1779
George/Scottsdale	03:01:02	-23.5	Dark	Up	47.1	130.7	Up	02:49:00 - 03:13:04	-1835
Lake Havasu City	03:01:11	-21.5	Dark	Up	45.0	128.6	Up	02:49:09 - 03:13:13	-1837
Idyllwild	03:01:19	-19.5	Dark	Up	43.9	125.5	Up	02:49:17 - 03:13:21	-1987
Wildwood	03:01:25	-18.0	AT	Up	42.5	123.9	Up	02:49:23 - 03:13:27	-2008
Calipatria	03:01:15	-20.5	Dark	Up	45.1	126.3	Up	02:49:13 - 03:13:17	-2012
Yuma	03:01:11	-21.2	Dark	Up	45.9	126.8	Up	02:49:09 - 03:13:13	-2027

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 523764, (2027/02/15 03:02UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:45:08.0 -16:43:25 -1.5 20.50  57
Alhena         06:37:42.8 +16:23:56  1.9 17.33  35
PPM 152385     07:19:22.4 +02:44:26  5.9  0.74  50
PPM 152289     07:16:36.5 +01:52:41  7.6  0.38  50
PPM 152348     07:18:19.9 +02:07:21  9.9  0.16  50
523764         07:17:42.2 +02:08:05 16.6        50
Positions are for J2000

Event circumstances last updated at 2024/03/05 04:57:48 UT

RECON