RECON: TNO occultation with 15820

Event between (15820) 94TB and star GA1220:02045353 with event index number of 2541222

Geocentric closest approach at 2028/11/30 04:44:02 UTC

J2000 position of star is 05:41:58.7 +33:18:46
Equinox of date position of star is 05:43:34.1 +33:19:22
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 40 degrees from the moon. Moon is 96% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 27.8 AU from the Sun and 26.9 AU from the Earth.
Apparent velocity is 22.5 km/sec on the sky relative to the star, or, 4.2 arcsec/hr.
The 1-sigma error in the time of the event is 367 seconds.
The 1-sigma cross-track error in the shadow position is 1433 km.
The sky-plane scale is 19477.1 km/arcsec.

The object has an absolute magnitude Hv=7.6
Diameter=183.7 km assuming a 5% albedo -- 8.1 sec chord
Diameter=75.0 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15820, (2028/11/30 04:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:35.0 +16:33:55  0.8 22.45  25
Alnath         05:28:07.3 +28:37:45  1.6  5.78  36
PPM 070534     05:35:21.0 +32:49:07  6.5  1.86  38
PPM 070776     05:46:05.8 +33:06:38  8.3  0.51  40
PPM 070750     05:44:43.6 +33:23:09  9.9  0.19  40
15820          05:43:52.9 +33:19:29 16.9        40
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 2.5 sigma about the mid-time.
The median site spacing is 31.2 km RECON observability=1.0 and success probability=30.6%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Kamloops	04:46:45	-44.1	Dark	Up	40.7	84.7	Up	04:31:45 - 05:01:45	-529
Victoria	04:46:57	-43.0	Dark	Up	38.5	80.8	Up	04:31:57 - 05:01:57	-590
Peachland	04:46:48	-44.8	Dark	Up	41.0	84.3	Up	04:31:48 - 05:01:48	-624
Kelowna	04:46:47	-45.0	Dark	Up	41.2	84.6	Up	04:31:47 - 05:01:47	-625
Summerland	04:46:48	-44.9	Dark	Up	41.0	84.2	Up	04:31:48 - 05:01:48	-639
Penticton	04:46:48	-45.0	Dark	Up	41.1	84.3	Up	04:31:48 - 05:01:48	-649
Oliver	04:46:49	-45.2	Dark	Up	41.1	84.0	Up	04:31:49 - 05:01:49	-677
Anarchist Mountain Observatory	04:46:50	-45.3	Dark	Up	41.2	83.9	Up	04:31:50 - 05:01:50	-698
Okanogan	04:46:52	-45.4	Dark	Up	41.0	83.2	Up	04:31:52 - 05:01:52	-743
Brewster	04:46:53	-45.4	Dark	Up	40.8	82.9	Up	04:31:53 - 05:01:53	-758
Manson/Chelan	04:46:54	-45.3	Dark	Up	40.5	82.4	Up	04:31:54 - 05:01:54	-762
Wenatchee	04:46:56	-45.3	Dark	Up	40.4	81.9	Up	04:31:56 - 05:01:56	-795
Ellensburg	04:46:58	-45.3	Dark	Up	40.2	81.5	Up	04:31:58 - 05:01:58	-821
Yakima	04:46:59	-45.4	Dark	Up	40.1	81.1	Up	04:31:59 - 05:01:59	-854
Sleaford	04:46:17	-51.1	Dark	Up	49.6	97.4	Up	04:31:17 - 05:01:17	-872
Toppenish/White Swan	04:47:00	-45.6	Dark	Up	40.2	81.0	Up	04:32:00 - 05:02:00	-879
The Dalles	04:47:03	-45.3	Dark	Up	39.5	79.9	Up	04:32:03 - 05:02:03	-913
Maupin	04:47:04	-45.5	Dark	Up	39.5	79.6	Up	04:32:04 - 05:02:04	-952
PNWRO	04:46:59	-46.7	Dark	Up	41.2	81.7	Up	04:31:59 - 05:01:59	-966
Sisters	04:47:08	-45.4	Dark	Up	39.0	78.6	Up	04:32:08 - 05:02:08	-1007
Bend	04:47:08	-45.6	Dark	Up	39.2	78.6	Up	04:32:08 - 05:02:08	-1037
Oregon Observatory	04:47:09	-45.6	Dark	Up	39.0	78.4	Up	04:32:09 - 05:02:09	-1047
Chiloquin	04:47:14	-45.6	Dark	Up	38.5	77.1	Up	04:32:14 - 05:02:14	-1142
Klamath Falls	04:47:15	-45.8	Dark	Up	38.5	76.9	Up	04:32:15 - 05:02:15	-1175
Fall River/Burney	04:47:17	-46.3	Dark	Up	38.5	76.2	Up	04:32:17 - 05:02:17	-1293
Cedarville	04:47:14	-47.1	Dark	Up	39.5	77.2	Up	04:32:14 - 05:02:14	-1301
Greenville	04:47:19	-46.8	Dark	Up	38.6	75.7	Up	04:32:19 - 05:02:19	-1391
Gimple	04:47:19	-46.9	Dark	Up	38.7	75.8	Up	04:32:19 - 05:02:19	-1395
Quincy	04:47:20	-46.9	Dark	Up	38.5	75.6	Up	04:32:20 - 05:02:20	-1409
Portola	04:47:19	-47.2	Dark	Up	38.9	75.7	Up	04:32:19 - 05:02:19	-1440
Reno	04:47:19	-47.8	Dark	Up	39.3	75.8	Up	04:32:19 - 05:02:19	-1491
Carson City	04:47:20	-47.9	Dark	Up	39.2	75.6	Up	04:32:20 - 05:02:20	-1524
Gardnerville	04:47:21	-48.0	Dark	Up	39.2	75.4	Up	04:32:21 - 05:02:21	-1548
Yerington	04:47:19	-48.4	Dark	Up	39.6	75.7	Up	04:32:19 - 05:02:19	-1569
Hawthorne	04:47:20	-48.9	Dark	Up	39.9	75.6	Up	04:32:20 - 05:02:20	-1633
Lee Vining	04:47:22	-48.6	Dark	Up	39.4	74.9	Up	04:32:22 - 05:02:22	-1663
Bishop	04:47:23	-49.3	Dark	Up	39.8	74.8	Up	04:32:23 - 05:02:23	-1749
Beatty	04:47:21	-50.7	Dark	Up	41.0	75.1	Up	04:32:21 - 05:02:21	-1861
Dunrhomin	04:46:47	-58.1	Dark	Up	50.4	83.9	Up	04:31:47 - 05:01:47	-1995
Nikitin	04:46:48	-58.2	Dark	Up	50.3	83.7	Up	04:31:48 - 05:01:48	-2012
CU-SBO	04:46:48	-58.2	Dark	Up	50.3	83.6	Up	04:31:48 - 05:01:48	-2015
Wildwood	04:47:31	-49.6	Dark	Up	38.8	72.1	Up	04:32:31 - 05:02:31	-2041
Laughlin/Bullhead City	04:47:21	-52.7	Dark	Up	42.2	74.5	Up	04:32:21 - 05:02:21	-2116
Patrick	04:47:18	-53.2	Dark	Up	42.8	74.9	Up	04:32:18 - 05:02:18	-2123
Idyllwild	04:47:28	-51.2	Dark	Up	40.1	72.5	Up	04:32:28 - 05:02:28	-2158
Lake Havasu City	04:47:22	-53.0	Dark	Up	42.2	74.0	Up	04:32:22 - 05:02:22	-2191
Calipatria	04:47:27	-52.3	Dark	Up	40.9	72.4	Up	04:32:27 - 05:02:27	-2268
Yuma	04:47:26	-53.1	Dark	Up	41.5	72.3	Up	04:32:26 - 05:02:26	-2349
George/Scottsdale	04:47:18	-55.2	Dark	Up	44.0	74.1	Up	04:32:18 - 05:02:18	-2369

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, (2028/11/30 04:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 22.45  25
Alnath         05:26:17.6 +28:36:23  1.6  5.78  36
PPM 070534     05:33:27.4 +32:48:03  6.5  1.86  38
PPM 070776     05:44:11.7 +33:06:00  8.3  0.51  40
PPM 070750     05:42:49.3 +33:22:28  9.9  0.19  40
15820          05:41:58.7 +33:18:46 16.9        40
Positions are for J2000

Event circumstances last updated at 2024/02/27 04:12:15 UT

RECON