RECON: TNO occultation with 119979

Event between (119979) 02WC19 and star GA1100:02023157 with event index number of 2115965

Geocentric closest approach at 2023/12/25 12:41:01 UTC

J2000 position of star is 06:24:15.6 +21:00:18
Equinox of date position of star is 06:25:41.0 +20:59:26
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 21 degrees from the moon. Moon is 97% illuminated.
Apparent brightness V=20.6

[RECON map]
Object is 39.3 AU from the Sun and 38.3 AU from the Earth.
Apparent velocity is 25.2 km/sec on the sky relative to the star, or, 3.3 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 1574 km.
The sky-plane scale is 27755.5 km/arcsec.

The object has an absolute magnitude Hv=4.7
Diameter=691.9 km assuming a 5% albedo -- 27.8 sec chord
Diameter=282.4 km assuming a 30% albedo -- 11.3 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 119979, (2023/12/25 12:41UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.3 +07:24:34  0.4 15.31  24
Alhena         06:39:05.8 +16:22:36  1.9  5.60  26
16 Gem         06:29:22.3 +20:28:46  6.1  1.00  22
PPM 096021     06:29:35.5 +21:08:26  7.9  0.92  22
PPM 095854     06:23:49.0 +20:51:47  9.4  0.46  21
PPM 095928     06:26:27.4 +21:16:10 10.5  0.33  21
119979         06:25:41.6 +20:59:26 17.0        21
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 19.5 km RECON observability=0.9 and success probability=0.4%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	12:38:40	-22.0	Dark	Up	21.6	276.8	Low	12:23:40 - 12:53:40	4581
Kamloops	12:38:44	-30.8	Dark	Up	30.5	266.4	Up	12:23:44 - 12:53:44	4122
Kelowna	12:38:41	-30.2	Dark	Up	30.0	267.5	Up	12:23:41 - 12:53:41	4085
Peachland	12:38:41	-30.4	Dark	Up	30.2	267.4	Up	12:23:41 - 12:53:41	4070
Summerland	12:38:40	-30.4	Dark	Up	30.2	267.5	Up	12:23:40 - 12:53:40	4061
Penticton	12:38:40	-30.3	Dark	Up	30.1	267.6	Up	12:23:40 - 12:53:40	4059
Oliver	12:38:39	-30.3	Dark	Up	30.1	267.8	Up	12:23:39 - 12:53:39	4033
Anarchist Mountain Observatory	12:38:38	-30.2	Dark	Up	30.0	268.1	Low	12:23:38 - 12:53:38	4026
Okanogan	12:38:36	-30.3	Dark	Up	30.2	268.3	Up	12:23:36 - 12:53:36	3972
Brewster	12:38:35	-30.4	Dark	Up	30.3	268.3	Up	12:23:35 - 12:53:35	3946
Manson/Chelan	12:38:35	-30.7	Dark	Up	30.6	268.1	Up	12:23:35 - 12:53:35	3920
Victoria	12:38:41	-32.8	Dark	Up	32.7	265.3	Up	12:23:41 - 12:53:41	3883
Wenatchee	12:38:33	-30.8	Dark	Up	30.7	268.3	Up	12:23:33 - 12:53:33	3880
Ellensburg	12:38:32	-30.9	Dark	Up	30.9	268.4	Up	12:23:32 - 12:53:32	3842
PNWRO	12:38:28	-29.7	Dark	Up	29.8	270.1	Low	12:23:28 - 12:53:28	3811
Yakima	12:38:31	-30.9	Dark	Up	30.9	268.6	Up	12:23:31 - 12:53:31	3810
Toppenish/White Swan	12:38:30	-30.8	Dark	Up	30.8	268.8	Up	12:23:30 - 12:53:30	3798
Dunrhomin	12:37:59	-19.0	Dark	Up	19.3	281.6	Really Low	12:22:59 - 12:52:59	3769
Nikitin	12:37:59	-19.0	Dark	Up	19.3	281.7	Really Low	12:22:59 - 12:52:59	3755
CU-SBO	12:37:58	-19.0	Dark	Up	19.3	281.6	Really Low	12:22:58 - 12:52:58	3747
The Dalles	12:38:29	-31.3	Dark	Up	31.4	268.7	Up	12:23:29 - 12:53:29	3715
Maupin	12:38:27	-31.2	Dark	Up	31.3	269.1	Up	12:23:27 - 12:53:27	3685
Sisters	12:38:25	-31.5	Dark	Up	31.7	269.2	Up	12:23:25 - 12:53:25	3601
Bend	12:38:24	-31.3	Dark	Up	31.5	269.6	Up	12:23:24 - 12:53:24	3589
Oregon Observatory	12:38:24	-31.4	Dark	Up	31.6	269.6	Up	12:23:24 - 12:53:24	3571
Chiloquin	12:38:20	-31.6	Dark	Up	31.9	270.1	Up	12:23:20 - 12:53:20	3451
Klamath Falls	12:38:20	-31.6	Dark	Up	31.8	270.4	Up	12:23:20 - 12:53:20	3425
Cedarville	12:38:15	-30.3	Dark	Up	30.6	271.8	Up	12:23:15 - 12:53:15	3415
Fall River/Burney	12:38:16	-31.2	Dark	Up	31.5	271.3	Up	12:23:16 - 12:53:16	3338
Gimple	12:38:12	-30.7	Dark	Up	31.1	272.2	Up	12:23:12 - 12:53:12	3277
Greenville	12:38:12	-30.8	Dark	Up	31.2	272.2	Up	12:23:12 - 12:53:12	3274
Portola	12:38:11	-30.4	Dark	Up	30.8	272.7	Up	12:23:11 - 12:53:11	3261
Reno	12:38:09	-29.9	Dark	Up	30.3	273.2	Up	12:23:09 - 12:53:09	3258
Quincy	12:38:12	-30.8	Dark	Up	31.2	272.3	Up	12:23:12 - 12:53:12	3257
Yerington	12:38:07	-29.3	Dark	Up	29.8	273.9	Low	12:23:07 - 12:53:07	3231
Carson City	12:38:08	-29.8	Dark	Up	30.3	273.4	Up	12:23:08 - 12:53:08	3228
Gardnerville	12:38:07	-29.7	Dark	Up	30.2	273.6	Up	12:23:07 - 12:53:07	3209
Hawthorne	12:38:05	-28.8	Dark	Up	29.3	274.5	Low	12:23:05 - 12:53:05	3208
Lee Vining	12:38:04	-29.1	Dark	Up	29.7	274.5	Low	12:23:04 - 12:53:04	3144
Beatty	12:37:58	-27.1	Dark	Up	27.7	276.4	Low	12:22:58 - 12:52:58	3127
Bishop	12:38:02	-28.5	Dark	Up	29.1	275.3	Low	12:23:02 - 12:53:02	3115
Patrick	12:37:51	-24.6	Dark	Up	25.2	278.7	Low	12:22:51 - 12:52:51	3092
Laughlin/Bullhead City	12:37:52	-25.1	Dark	Up	25.8	278.4	Low	12:22:52 - 12:52:52	3047
George/Scottsdale	12:37:45	-22.6	Dark	Up	23.3	280.5	Low	12:22:45 - 12:52:45	3011
Lake Havasu City	12:37:49	-24.7	Dark	Up	25.5	278.9	Low	12:22:49 - 12:52:49	2996
Idyllwild	12:37:50	-26.5	Dark	Up	27.3	278.1	Low	12:22:50 - 12:52:50	2850
Calipatria	12:37:47	-25.4	Dark	Up	26.2	278.9	Low	12:22:47 - 12:52:47	2834
Yuma	12:37:45	-24.6	Dark	Up	25.4	279.6	Low	12:22:45 - 12:52:45	2826
Wildwood	12:37:53	-28.1	Dark	Up	28.9	276.9	Low	12:22:53 - 12:52:53	2819

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 119979, (2023/12/25 12:41UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.31  24
Alhena         06:37:42.8 +16:23:57  1.9  5.60  26
16 Gem         06:27:56.7 +20:29:46  6.1  1.00  22
PPM 096021     06:28:09.4 +21:09:26  7.9  0.92  22
PPM 095854     06:22:23.1 +20:52:35  9.4  0.46  21
PPM 095928     06:25:01.3 +21:17:04 10.5  0.33  21
119979         06:24:15.6 +21:00:18 17.0        21
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:07:47 UT

RECON