RECON: TNO occultation with 160427

Event between (160427) 05RL43 and star GA1000:01247988 with event index number of 2386725

Geocentric closest approach at 2028/09/09 12:23:55 UTC

J2000 position of star is 06:01:11.5 +11:42:37
Equinox of date position of star is 06:02:31.9 +11:42:34
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 74% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 24.9 AU from the Sun and 25.1 AU from the Earth.
Apparent velocity is 13.5 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 136 seconds.
The 1-sigma cross-track error in the shadow position is 975 km.
The sky-plane scale is 18219.0 km/arcsec.

The object has an absolute magnitude Hv=7.9
Diameter=155.6 km assuming a 5% albedo -- 11.5 sec chord
Diameter=63.5 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 160427, (2028/09/09 12:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:43.6 +07:24:36  0.4  4.55  45
Alhena         06:39:22.1 +16:22:20  1.9 10.02  52
PPM 121823     06:05:01.0 +11:40:40  6.0  0.54  46
PPM 121789     06:03:40.8 +11:39:15  8.2  0.22  45
PPM 121749     06:02:30.7 +11:43:47  8.6  0.07  45
160427         06:02:47.7 +11:42:32 15.5        45
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 34.0 km RECON observability=0.2 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	12:20:07	-2.3	CT	Up	45.9	148.0	Up	12:08:15 - 12:31:58	-2153
Kamloops	12:19:03	-11.4	NT	Up	40.8	129.1	Up	12:07:12 - 12:30:55	-2556
Kelowna	12:19:06	-11.2	NT	Up	41.8	129.6	Up	12:07:15 - 12:30:58	-2621
Peachland	12:19:05	-11.4	NT	Up	41.7	129.2	Up	12:07:13 - 12:30:56	-2637
Summerland	12:19:06	-11.4	NT	Up	41.9	129.2	Up	12:07:14 - 12:30:57	-2650
Penticton	12:19:05	-11.4	NT	Up	41.9	129.3	Up	12:07:14 - 12:30:57	-2654
Oliver	12:19:06	-11.5	NT	Up	42.2	129.0	Up	12:07:14 - 12:30:57	-2689
Anarchist Mountain Observatory	12:19:07	-11.5	NT	Up	42.4	129.1	Up	12:07:15 - 12:30:58	-2702
Okanogan	12:19:04	-11.8	NT	Up	42.7	128.4	Up	12:07:13 - 12:30:56	-2770
Brewster	12:19:03	-12.1	AT	Up	42.7	128.0	Up	12:07:12 - 12:30:55	-2800
Victoria	12:18:49	-14.1	AT	Up	40.5	124.3	Up	12:06:58 - 12:30:41	-2814
Manson/Chelan	12:19:03	-12.4	AT	Up	42.7	127.4	Up	12:07:12 - 12:30:55	-2827
Wenatchee	12:19:01	-12.7	AT	Up	42.8	126.9	Up	12:07:09 - 12:30:52	-2877
Ellensburg	12:18:59	-13.0	AT	Up	43.0	126.3	Up	12:07:07 - 12:30:50	-2922
Yakima	12:19:00	-13.1	AT	Up	43.2	126.0	Up	12:07:08 - 12:30:51	-2963
Toppenish/White Swan	12:19:01	-13.1	AT	Up	43.4	126.0	Up	12:07:09 - 12:30:52	-2982
PNWRO	12:19:06	-12.2	AT	Up	44.5	127.4	Up	12:07:15 - 12:30:58	-2992
The Dalles	12:18:55	-13.9	AT	Up	43.4	124.5	Up	12:07:04 - 12:30:47	-3073
Maupin	12:18:56	-14.0	AT	Up	43.7	124.3	Up	12:07:04 - 12:30:47	-3114
Sisters	12:18:55	-14.7	AT	Up	43.9	123.1	Up	12:07:03 - 12:30:46	-3212
Bend	12:18:54	-14.6	AT	Up	44.2	123.1	Up	12:07:02 - 12:30:45	-3231
Oregon Observatory	12:18:54	-14.7	AT	Up	44.2	122.9	Up	12:07:02 - 12:30:45	-3251
Dunrhomin	12:20:22	-3.9	CT	Up	55.8	140.7	Up	12:08:30 - 12:32:13	-3254
Nikitin	12:20:21	-3.9	CT	Up	56.0	140.5	Up	12:08:29 - 12:32:12	-3273
CU-SBO	12:20:21	-4.0	CT	Up	56.0	140.3	Up	12:08:29 - 12:32:12	-3281
Chiloquin	12:18:53	-15.5	AT	Up	44.6	121.3	Up	12:07:01 - 12:30:44	-3394
Klamath Falls	12:18:51	-15.6	AT	Up	44.9	121.1	Up	12:07:00 - 12:30:43	-3428
Cedarville	12:19:00	-14.7	AT	Up	46.3	122.3	Up	12:07:08 - 12:30:51	-3471
Fall River/Burney	12:18:54	-15.8	AT	Up	45.7	120.5	Up	12:07:02 - 12:30:45	-3544
Gimple	12:18:56	-15.7	AT	Up	46.5	120.3	Up	12:07:05 - 12:30:48	-3628
Greenville	12:18:56	-15.8	AT	Up	46.5	120.2	Up	12:07:05 - 12:30:48	-3630
Quincy	12:18:55	-15.8	AT	Up	46.6	120.0	Up	12:07:03 - 12:30:46	-3651
Portola	12:18:58	-15.5	AT	Up	47.0	120.4	Up	12:07:07 - 12:30:50	-3655
Reno	12:19:01	-15.1	AT	Up	47.5	120.8	Up	12:07:09 - 12:30:52	-3670
Carson City	12:19:01	-15.2	AT	Up	47.7	120.5	Up	12:07:10 - 12:30:53	-3708
Yerington	12:19:03	-14.8	AT	Up	48.3	121.0	Up	12:07:12 - 12:30:55	-3715
Gardnerville	12:19:03	-15.3	AT	Up	47.9	120.3	Up	12:07:11 - 12:30:54	-3732
Hawthorne	12:19:09	-14.6	AT	Up	48.9	121.2	Up	12:07:17 - 12:31:00	-3753
Lee Vining	12:19:06	-15.1	AT	Up	48.8	120.1	Up	12:07:15 - 12:30:58	-3822
Bishop	12:19:09	-14.8	AT	Up	49.6	120.3	Up	12:07:17 - 12:31:00	-3870
Beatty	12:19:19	-13.6	AT	Up	51.0	121.6	Up	12:07:28 - 12:31:11	-3883
Patrick	12:19:37	-11.8	NT	Up	53.8	123.4	Up	12:07:45 - 12:31:28	-3972
Laughlin/Bullhead City	12:19:33	-12.4	AT	Up	53.5	122.3	Up	12:07:42 - 12:31:25	-4015
Lake Havasu City	12:19:35	-12.4	AT	Up	54.0	121.8	Up	12:07:43 - 12:31:26	-4079
George/Scottsdale	12:19:50	-10.5	NT	Up	56.2	123.9	Up	12:07:58 - 12:31:41	-4099
Idyllwild	12:19:21	-14.5	AT	Up	52.6	118.2	Up	12:07:30 - 12:31:13	-4216
Wildwood	12:19:09	-16.0	AT	Up	51.0	116.6	Up	12:07:17 - 12:31:00	-4220
Calipatria	12:19:29	-13.7	AT	Up	53.8	118.8	Up	12:07:37 - 12:31:20	-4252
Yuma	12:19:35	-13.1	AT	Up	54.7	119.3	Up	12:07:44 - 12:31:27	-4276

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 160427, (2028/09/09 12:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  4.55  45
Alhena         06:37:42.8 +16:23:57  1.9 10.02  52
PPM 121823     06:03:24.8 +11:40:51  6.0  0.54  46
PPM 121789     06:02:04.7 +11:39:22  8.2  0.22  45
PPM 121749     06:00:54.5 +11:43:51  8.6  0.07  45
160427         06:01:11.5 +11:42:37 15.5        45
Positions are for J2000

Event circumstances last updated at 2023/12/24 04:42:54 UT

RECON