RECON: TNO occultation with 12UD178

Event between 12UD178 and star GA1140:00929452 with event index number of 1048324

Geocentric closest approach at 2020/12/02 03:32:53 UTC

J2000 position of star is 05:01:00.3 +24:14:59
Equinox of date position of star is 05:02:14.1 +24:16:41
Stellar brightness G=16.4, use SENSEUP=128
Star is 13 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=25.5

[RECON map]
TNO is 36.0 AU from the Sun and 35.0 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 217 seconds.
The 1-sigma cross-track error in the shadow position is 1908 km.
The sky-plane scale is 25403.8 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=201.4 km assuming a 5% albedo -- 2.5 sec chord
Diameter=82.2 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 12UD178, (2020/12/02 03:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.4 +16:32:59  0.8  9.72  21
Alnath         05:27:37.0 +28:37:23  1.6  7.14   9
98 Tau         04:59:26.4 +25:04:51  5.8  1.03  14
PPM 093960     05:01:40.7 +24:11:32  8.4  0.16  14
12UD178        05:02:16.8 +24:16:45 16.4        13
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 4.1 sigma about the mid-time.
The median site spacing is 18.8 km RECON observability=1.0 and success probability=10.4%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Clarence Fulton	03:35:21	-34.0	Dark	Up	31.5	89.0	Up	03:20:21 - 03:50:21	4313
Victoria	03:35:30	-31.4	Dark	Up	28.7	85.0	Low	03:20:30 - 03:50:30	4310
Peachland	03:35:22	-33.7	Dark	Up	31.2	88.4	Up	03:20:22 - 03:50:22	4290
Kelowna	03:35:22	-33.9	Dark	Up	31.4	88.7	Up	03:20:22 - 03:50:22	4290
Summerland	03:35:23	-33.8	Dark	Up	31.2	88.4	Up	03:20:23 - 03:50:23	4277
Penticton	03:35:23	-33.9	Dark	Up	31.3	88.4	Up	03:20:23 - 03:50:23	4268
Oliver	03:35:24	-33.9	Dark	Up	31.3	88.2	Up	03:20:24 - 03:50:24	4243
Anarchist Mountain Observatory	03:35:25	-34.1	Dark	Up	31.4	88.2	Up	03:20:25 - 03:50:25	4225
Tonasket	03:35:25	-34.1	Dark	Up	31.4	88.0	Up	03:20:25 - 03:50:25	4204
Okanogan	03:35:27	-34.0	Dark	Up	31.3	87.7	Up	03:20:27 - 03:50:27	4183
Brewster	03:35:28	-33.9	Dark	Up	31.1	87.4	Up	03:20:28 - 03:50:28	4169
Manson/Chelan	03:35:30	-33.6	Dark	Up	30.9	87.0	Up	03:20:30 - 03:50:30	4164
Entiat	03:35:30	-33.6	Dark	Up	30.8	86.8	Up	03:20:30 - 03:50:30	4150
Wenatchee	03:35:31	-33.6	Dark	Up	30.7	86.6	Up	03:20:31 - 03:50:31	4134
Ellensburg	03:35:32	-33.4	Dark	Up	30.5	86.2	Up	03:20:32 - 03:50:32	4110
Yakima	03:35:34	-33.5	Dark	Up	30.5	85.9	Up	03:20:34 - 03:50:34	4079
Toppenish/White Swan	03:35:34	-33.6	Dark	Up	30.6	85.9	Up	03:20:34 - 03:50:34	4057
Goldendale	03:35:37	-33.3	Dark	Up	30.3	85.3	Up	03:20:37 - 03:50:37	4029
The Dalles	03:35:38	-33.1	Dark	Up	30.0	84.9	Up	03:20:38 - 03:50:38	4023
Pasco	03:35:34	-34.5	Dark	Up	31.5	86.7	Up	03:20:34 - 03:50:34	4008
Maupin	03:35:39	-33.2	Dark	Up	30.1	84.8	Up	03:20:39 - 03:50:39	3987
PNWRO	03:35:34	-34.6	Dark	Up	31.6	86.8	Up	03:20:34 - 03:50:34	3982
Sisters	03:35:42	-32.8	Dark	Up	29.6	84.0	Low	03:20:42 - 03:50:42	3935
Redmond	03:35:42	-33.1	Dark	Up	29.9	84.2	Low	03:20:42 - 03:50:42	3920
Bend	03:35:43	-33.0	Dark	Up	29.8	84.0	Low	03:20:43 - 03:50:43	3908
Oregon Observatory	03:35:43	-32.9	Dark	Up	29.7	83.8	Low	03:20:43 - 03:50:43	3898
La Pine/Gilchrist	03:35:44	-32.9	Dark	Up	29.6	83.7	Low	03:20:44 - 03:50:44	3884
North Lake	03:35:45	-33.3	Dark	Up	30.0	83.8	Up	03:20:45 - 03:50:45	3830
Klamath Falls	03:35:49	-32.7	Dark	Up	29.3	82.7	Low	03:20:49 - 03:50:49	3778
Paisley	03:35:46	-33.6	Dark	Up	30.2	83.7	Up	03:20:46 - 03:50:46	3774
Lakeview	03:35:48	-33.7	Dark	Up	30.3	83.6	Up	03:20:48 - 03:50:48	3726
Fall River/Burney	03:35:52	-33.0	Dark	Up	29.4	82.3	Low	03:20:52 - 03:50:52	3669
Cedarville	03:35:49	-33.9	Dark	Up	30.4	83.3	Up	03:20:49 - 03:50:49	3667
Susanville	03:35:53	-33.5	Dark	Up	29.9	82.4	Low	03:20:53 - 03:50:53	3591
Greenville	03:35:55	-33.3	Dark	Up	29.6	82.0	Low	03:20:55 - 03:50:55	3579
Gimple	03:35:54	-33.3	Dark	Up	29.7	82.1	Low	03:20:54 - 03:50:54	3576
Quincy	03:35:55	-33.3	Dark	Up	29.6	81.9	Low	03:20:55 - 03:50:55	3562
Portola	03:35:55	-33.6	Dark	Up	29.9	82.1	Low	03:20:55 - 03:50:55	3535
Reno	03:35:55	-34.1	Dark	Up	30.4	82.4	Up	03:20:55 - 03:50:55	3490
Carson City	03:35:56	-34.1	Dark	Up	30.4	82.2	Up	03:20:56 - 03:50:56	3459
Gardnerville	03:35:56	-34.2	Dark	Up	30.4	82.0	Up	03:20:56 - 03:50:56	3436
Yerington	03:35:56	-34.6	Dark	Up	30.8	82.4	Up	03:20:56 - 03:50:56	3420
Hawthorne	03:35:57	-35.0	Dark	Up	31.2	82.4	Up	03:20:57 - 03:50:57	3362
Lee Vining	03:35:59	-34.6	Dark	Up	30.7	81.8	Up	03:20:59 - 03:50:59	3331
Tonopah	03:35:56	-36.1	Dark	Up	32.2	82.9	Up	03:20:56 - 03:50:56	3272
Bishop	03:36:00	-35.2	Dark	Up	31.2	81.9	Up	03:21:00 - 03:51:00	3253
CPSLO	03:36:07	-33.3	Dark	Up	29.1	79.5	Low	03:21:07 - 03:51:07	3155
Beatty	03:35:59	-36.5	Dark	Up	32.4	82.5	Up	03:20:59 - 03:50:59	3154
Indian Springs	03:35:58	-37.3	Dark	Up	33.3	82.8	Up	03:20:58 - 03:50:58	3087
Niwot	03:35:31	-45.2	Dark	Up	41.6	91.7	Up	03:20:31 - 03:50:31	3051
SwRI	03:35:31	-45.2	Dark	Up	41.5	91.5	Up	03:20:31 - 03:50:31	3044
Henderson	03:35:59	-37.9	Dark	Up	33.8	82.8	Up	03:20:59 - 03:50:59	3014
Wildwood	03:36:08	-34.9	Dark	Up	30.6	79.8	Up	03:21:08 - 03:51:08	2971
Searchlight/Boulder City	03:36:00	-37.9	Dark	Up	33.7	82.5	Up	03:21:00 - 03:51:00	2960
Laughlin/Bullhead City	03:36:00	-38.2	Dark	Up	34.0	82.5	Up	03:21:00 - 03:51:00	2921
Patrick	03:35:59	-38.8	Dark	Up	34.6	83.0	Up	03:20:59 - 03:50:59	2918
Kingman/Dolan Springs	03:35:59	-38.6	Dark	Up	34.4	82.7	Up	03:20:59 - 03:50:59	2904
Mohave Valley	03:36:01	-38.2	Dark	Up	33.9	82.3	Up	03:21:01 - 03:51:01	2896
Idyllwild	03:36:07	-36.4	Dark	Up	32.0	80.5	Up	03:21:07 - 03:51:07	2869
DCO	03:35:58	-39.3	Dark	Up	35.1	83.1	Up	03:20:58 - 03:50:58	2864
Lake Havasu City	03:36:01	-38.4	Dark	Up	34.1	82.2	Up	03:21:01 - 03:51:01	2850
Parker	03:36:02	-38.4	Dark	Up	34.1	81.9	Up	03:21:02 - 03:51:02	2817
Blythe	03:36:04	-38.1	Dark	Up	33.8	81.4	Up	03:21:04 - 03:51:04	2780
Calipatria	03:36:07	-37.3	Dark	Up	32.9	80.7	Up	03:21:07 - 03:51:07	2769
Yuma	03:36:06	-38.1	Dark	Up	33.6	80.8	Up	03:21:06 - 03:51:06	2696
George/Scottsdale	03:35:59	-40.4	Dark	Up	36.0	82.8	Up	03:20:59 - 03:50:59	2690

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 12UD178, (2020/12/02 03:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.72  21
Alnath         05:26:17.5 +28:36:23  1.6  7.14   9
98 Tau         04:58:09.4 +25:03:00  5.8  1.03  14
PPM 093960     05:00:24.3 +24:09:45  8.4  0.16  14
12UD178        05:01:00.3 +24:14:59 16.4        13
Positions are for J2000

Event circumstances last updated at 2020/03/10 22:35:24 UT

RECON