RECON: TNO occultation with 16AN278

Event between 16AN278 and star GA1020:03072707 with event index number of 1950287

Geocentric closest approach at 2023/03/10 08:29:30 UTC

J2000 position of star is 08:02:46.1 +13:40:52
Equinox of date position of star is 08:04:03.8 +13:36:54
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 82 degrees from the moon. Moon is 92% illuminated.
Apparent brightness V=22.7

[RECON map]
Object is 37.1 AU from the Sun and 36.5 AU from the Earth.
Apparent velocity is 14.8 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 200 seconds.
The 1-sigma cross-track error in the shadow position is 1447 km.
The sky-plane scale is 26468.9 km/arcsec.

The object has an absolute magnitude Hv=6.9
Diameter=245.5 km assuming a 5% albedo -- 16.6 sec chord
Diameter=100.2 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 16AN278, (2023/03/10 08:24UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:44.0 +27:58:06  1.1 14.91  88
8 Cnc          08:06:21.9 +13:03:02  5.1  0.80  81
PPM 124801     08:05:23.5 +13:37:15  7.8  0.32  82
PPM 124783     08:04:42.4 +13:36:09  8.7  0.16  82
16AN278        08:04:03.8 +13:36:54 16.1        82
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 4.5 sigma about the mid-time.
The median site spacing is 11.1 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	08:27:38	-39.7	Dark	Up	24.2	261.1	Low	08:12:38 - 08:42:38	12346
Kamloops	08:27:52	-43.4	Dark	Up	33.2	249.3	Up	08:12:52 - 08:42:52	11907
Kelowna	08:27:50	-44.1	Dark	Up	33.0	250.6	Up	08:12:50 - 08:42:50	11893
Peachland	08:27:46	-44.2	Dark	Up	33.2	250.4	Up	08:12:46 - 08:42:46	11879
Summerland	08:27:44	-44.4	Dark	Up	33.2	250.6	Up	08:12:44 - 08:42:44	11874
Penticton	08:27:44	-44.4	Dark	Up	33.1	250.7	Up	08:12:44 - 08:42:44	11874
Oliver	08:27:40	-44.8	Dark	Up	33.3	250.9	Up	08:12:40 - 08:42:40	11857
Anarchist Mountain Observatory	08:27:39	-45.0	Dark	Up	33.2	251.2	Up	08:12:39 - 08:42:39	11854
Okanogan	08:27:36	-45.6	Dark	Up	33.6	251.4	Up	08:12:36 - 08:42:36	11814
Dunrhomin	08:26:17	-50.1	Dark	Up	25.1	266.8	Low	08:11:17 - 08:41:17	11806
Nikitin	08:26:15	-50.3	Dark	Up	25.2	266.9	Low	08:11:15 - 08:41:15	11795
Brewster	08:27:35	-45.9	Dark	Up	33.8	251.4	Up	08:12:35 - 08:42:35	11794
CU-SBO	08:26:14	-50.4	Dark	Up	25.2	266.9	Low	08:11:14 - 08:41:14	11789
Manson/Chelan	08:27:35	-46.1	Dark	Up	34.1	251.2	Up	08:12:35 - 08:42:35	11772
Wenatchee	08:27:32	-46.6	Dark	Up	34.3	251.3	Up	08:12:32 - 08:42:32	11742
Ellensburg	08:27:30	-47.0	Dark	Up	34.6	251.4	Up	08:12:30 - 08:42:30	11713
PNWRO	08:27:19	-47.9	Dark	Up	33.9	253.4	Up	08:12:19 - 08:42:19	11710
Victoria	08:27:48	-45.6	Dark	Up	35.8	247.9	Up	08:12:48 - 08:42:48	11708
Yakima	08:27:27	-47.4	Dark	Up	34.8	251.6	Up	08:12:27 - 08:42:27	11690
Toppenish/White Swan	08:27:25	-47.7	Dark	Up	34.7	251.9	Up	08:12:25 - 08:42:25	11684
The Dalles	08:27:23	-48.5	Dark	Up	35.5	251.8	Up	08:12:23 - 08:42:23	11615
Maupin	08:27:20	-48.9	Dark	Up	35.6	252.1	Up	08:12:20 - 08:42:20	11595
Sisters	08:27:15	-49.8	Dark	Up	36.2	252.3	Up	08:12:15 - 08:42:15	11529
Bend	08:27:13	-50.0	Dark	Up	36.1	252.7	Up	08:12:13 - 08:42:13	11523
Oregon Observatory	08:27:13	-50.2	Dark	Up	36.2	252.7	Up	08:12:13 - 08:42:13	11509
Chiloquin	08:27:06	-51.5	Dark	Up	36.9	253.2	Up	08:12:06 - 08:42:06	11416
Cedarville	08:26:54	-52.5	Dark	Up	36.0	255.3	Up	08:11:54 - 08:41:54	11408
Klamath Falls	08:27:03	-51.9	Dark	Up	37.0	253.5	Up	08:12:03 - 08:42:03	11397
Fall River/Burney	08:26:55	-53.0	Dark	Up	37.0	254.7	Up	08:11:55 - 08:41:55	11336
Gimple	08:26:49	-53.9	Dark	Up	36.9	255.7	Up	08:11:49 - 08:41:49	11296
Reno	08:26:41	-54.4	Dark	Up	36.3	257.0	Up	08:11:41 - 08:41:41	11294
Greenville	08:26:49	-53.9	Dark	Up	37.0	255.7	Up	08:11:49 - 08:41:49	11294
Portola	08:26:46	-54.2	Dark	Up	36.7	256.3	Up	08:11:46 - 08:41:46	11289
Yerington	08:26:37	-54.9	Dark	Up	35.9	257.8	Up	08:11:37 - 08:41:37	11281
Quincy	08:26:48	-54.1	Dark	Up	37.0	255.8	Up	08:11:48 - 08:41:48	11281
Carson City	08:26:40	-54.8	Dark	Up	36.4	257.2	Up	08:11:40 - 08:41:40	11272
Hawthorne	08:26:33	-55.3	Dark	Up	35.6	258.5	Up	08:11:33 - 08:41:33	11269
Gardnerville	08:26:39	-55.0	Dark	Up	36.4	257.4	Up	08:11:39 - 08:41:39	11258
Patrick	08:26:03	-57.4	Dark	Up	32.4	263.8	Up	08:11:03 - 08:41:03	11227
Beatty	08:26:19	-56.6	Dark	Up	34.5	261.0	Up	08:11:19 - 08:41:19	11226
Lee Vining	08:26:31	-55.9	Dark	Up	36.1	258.6	Up	08:11:31 - 08:41:31	11215
Bishop	08:26:25	-56.4	Dark	Up	35.7	259.5	Up	08:11:25 - 08:41:25	11200
Laughlin/Bullhead City	08:26:02	-57.8	Dark	Up	33.0	263.5	Up	08:11:02 - 08:41:02	11185
George/Scottsdale	08:25:48	-58.4	Dark	Up	31.0	266.0	Up	08:10:48 - 08:40:48	11180
Lake Havasu City	08:25:59	-58.4	Dark	Up	32.9	264.1	Up	08:10:59 - 08:40:59	11148
Idyllwild	08:26:01	-59.7	Dark	Up	35.0	263.1	Up	08:11:01 - 08:41:01	11010
Yuma	08:25:49	-60.2	Dark	Up	33.4	265.0	Up	08:10:49 - 08:40:49	11010
Calipatria	08:25:54	-60.0	Dark	Up	34.1	264.2	Up	08:10:54 - 08:40:54	11009
Wildwood	08:26:04	-59.7	Dark	Up	36.5	261.7	Up	08:11:04 - 08:41:04	10966

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 16AN278, (2023/03/10 08:24UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 14.91  88
8 Cnc          08:05:04.4 +13:07:04  5.1  0.80  81
PPM 124801     08:04:05.8 +13:41:16  7.8  0.32  82
PPM 124783     08:03:24.6 +13:40:08  8.7  0.16  82
16AN278        08:02:46.1 +13:40:52 16.1        82
Positions are for J2000

Event circumstances last updated at 2023/03/04 03:45:10 UT

RECON