RECON: TNO occultation with 15820

Event between (15820) 94TB and star GA1220:02026372 with event index number of 2541224

Geocentric closest approach at 2028/12/07 13:26:07 UTC

J2000 position of star is 05:40:58.7 +33:18:35
Equinox of date position of star is 05:42:34.2 +33:19:13
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 60 degrees from the moon. Moon is 69% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 27.8 AU from the Sun and 26.8 AU from the Earth.
Apparent velocity is 23.4 km/sec on the sky relative to the star, or, 4.3 arcsec/hr.
The 1-sigma error in the time of the event is 345 seconds.
The 1-sigma cross-track error in the shadow position is 1812 km.
The sky-plane scale is 19457.7 km/arcsec.

The object has an absolute magnitude Hv=7.6
Diameter=183.7 km assuming a 5% albedo -- 7.8 sec chord
Diameter=75.0 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15820, (2028/12/07 13:26UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:35.0 +16:33:55  0.8 22.29  74
Alnath         05:28:07.4 +28:37:45  1.6  5.66  62
PPM 070534     05:35:21.1 +32:49:07  6.5  1.66  61
PPM 070776     05:46:05.9 +33:06:38  8.3  0.70  59
PPM 070697     05:42:22.4 +33:31:29  8.6  0.23  60
15820          05:42:53.1 +33:19:21 16.3        59
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 2.6 sigma about the mid-time.
The median site spacing is 19.0 km RECON observability=0.8 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	13:23:12	-13.6	AT	Up	27.7	289.6	Low	13:08:12 - 13:38:12	9729
Kamloops	13:23:17	-22.0	Dark	Up	36.0	280.6	Up	13:08:17 - 13:38:17	9096
Kelowna	13:23:13	-21.3	Dark	Up	35.3	281.8	Up	13:08:13 - 13:38:13	9067
Peachland	13:23:12	-21.5	Dark	Up	35.5	281.6	Up	13:08:12 - 13:38:12	9047
Summerland	13:23:12	-21.4	Dark	Up	35.4	281.8	Up	13:08:12 - 13:38:12	9039
Penticton	13:23:12	-21.3	Dark	Up	35.3	281.9	Up	13:08:12 - 13:38:12	9038
Oliver	13:23:11	-21.2	Dark	Up	35.2	282.2	Up	13:08:11 - 13:38:11	9011
Anarchist Mountain Observatory	13:23:10	-21.1	Dark	Up	35.1	282.4	Up	13:08:10 - 13:38:10	9005
Okanogan	13:23:08	-21.1	Dark	Up	35.1	282.7	Up	13:08:08 - 13:38:08	8946
Dunrhomin	13:22:32	-9.0	NT	Up	22.8	295.1	Low	13:07:32 - 13:37:32	8935
Nikitin	13:22:32	-9.0	NT	Up	22.7	295.2	Low	13:07:32 - 13:37:32	8920
Brewster	13:23:07	-21.2	Dark	Up	35.2	282.8	Up	13:08:07 - 13:38:07	8917
CU-SBO	13:22:32	-9.0	NT	Up	22.8	295.2	Low	13:07:32 - 13:37:32	8912
Manson/Chelan	13:23:07	-21.4	Dark	Up	35.3	282.7	Up	13:08:07 - 13:38:07	8887
Wenatchee	13:23:06	-21.4	Dark	Up	35.4	282.9	Up	13:08:06 - 13:38:06	8843
Victoria	13:23:13	-23.6	Dark	Up	37.6	280.1	Up	13:08:13 - 13:38:13	8815
Ellensburg	13:23:04	-21.5	Dark	Up	35.4	283.0	Up	13:08:04 - 13:38:04	8801
PNWRO	13:22:59	-20.2	Dark	Up	34.1	284.7	Up	13:07:59 - 13:37:59	8787
Yakima	13:23:03	-21.4	Dark	Up	35.3	283.3	Up	13:08:03 - 13:38:03	8768
Toppenish/White Swan	13:23:02	-21.3	Dark	Up	35.2	283.6	Up	13:08:02 - 13:38:02	8757
The Dalles	13:23:01	-21.7	Dark	Up	35.5	283.6	Up	13:08:01 - 13:38:01	8662
Maupin	13:22:59	-21.5	Dark	Up	35.4	284.0	Up	13:07:59 - 13:37:59	8632
Sisters	13:22:57	-21.7	Dark	Up	35.5	284.3	Up	13:07:57 - 13:37:57	8540
Bend	13:22:56	-21.5	Dark	Up	35.3	284.6	Up	13:07:56 - 13:37:56	8530
Oregon Observatory	13:22:56	-21.6	Dark	Up	35.3	284.6	Up	13:07:56 - 13:37:56	8511
Chiloquin	13:22:52	-21.6	Dark	Up	35.3	285.3	Up	13:07:52 - 13:37:52	8383
Cedarville	13:22:47	-20.2	Dark	Up	33.8	286.9	Up	13:07:47 - 13:37:47	8366
Klamath Falls	13:22:51	-21.5	Dark	Up	35.1	285.6	Up	13:07:51 - 13:37:51	8357
Fall River/Burney	13:22:47	-21.0	Dark	Up	34.5	286.5	Up	13:07:47 - 13:37:47	8272
Gimple	13:22:44	-20.4	Dark	Up	33.9	287.4	Up	13:07:44 - 13:37:44	8217
Greenville	13:22:44	-20.4	Dark	Up	34.0	287.3	Up	13:07:44 - 13:37:44	8213
Reno	13:22:41	-19.5	Dark	Up	33.0	288.3	Up	13:07:41 - 13:37:41	8212
Portola	13:22:43	-20.0	Dark	Up	33.5	287.8	Up	13:07:43 - 13:37:43	8206
Quincy	13:22:44	-20.4	Dark	Up	33.9	287.5	Up	13:07:44 - 13:37:44	8196
Yerington	13:22:39	-18.8	Dark	Up	32.3	288.9	Up	13:07:39 - 13:37:39	8193
Carson City	13:22:40	-19.4	Dark	Up	32.8	288.5	Up	13:07:40 - 13:37:40	8182
Hawthorne	13:22:37	-18.3	Dark	Up	31.8	289.4	Up	13:07:37 - 13:37:37	8177
Gardnerville	13:22:39	-19.3	Dark	Up	32.7	288.7	Up	13:07:39 - 13:37:39	8163
Patrick	13:22:24	-13.8	AT	Up	27.1	293.1	Low	13:07:24 - 13:37:24	8132
Beatty	13:22:31	-16.5	AT	Up	29.8	291.2	Low	13:07:31 - 13:37:31	8123
Lee Vining	13:22:36	-18.6	Dark	Up	31.9	289.5	Up	13:07:36 - 13:37:36	8106
Bishop	13:22:34	-17.9	AT	Up	31.2	290.2	Up	13:07:34 - 13:37:34	8087
George/Scottsdale	13:22:18	-11.7	NT	Up	24.9	294.7	Low	13:07:18 - 13:37:18	8086
Laughlin/Bullhead City	13:22:24	-14.3	AT	Up	27.6	293.0	Low	13:07:24 - 13:37:24	8077
Lake Havasu City	13:22:22	-13.9	AT	Up	27.1	293.4	Low	13:07:22 - 13:37:22	8031
Yuma	13:22:18	-13.6	AT	Up	26.6	294.1	Low	13:07:18 - 13:37:18	7860
Calipatria	13:22:20	-14.5	AT	Up	27.5	293.6	Low	13:07:20 - 13:37:20	7854
Idyllwild	13:22:23	-15.6	AT	Up	28.6	292.8	Low	13:07:23 - 13:37:23	7850
Wildwood	13:22:26	-17.2	AT	Up	30.2	291.9	Up	13:07:26 - 13:37:26	7791

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 15820, (2028/12/07 13:26UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 22.29  74
Alnath         05:26:17.6 +28:36:23  1.6  5.66  62
PPM 070534     05:33:27.4 +32:48:03  6.5  1.66  61
PPM 070776     05:44:11.7 +33:06:00  8.3  0.70  59
PPM 070697     05:40:27.9 +33:30:42  8.6  0.23  60
15820          05:40:58.7 +33:18:35 16.3        59
Positions are for J2000

Event circumstances last updated at 2024/02/27 04:12:42 UT

RECON