RECON: TNO occultation with 04VY130

Event between 04VY130 and star GA1040:01362098 with event index number of 2568640

Geocentric closest approach at 2024/04/19 03:40:00 UTC

J2000 position of star is 05:58:20.4 +15:50:12
Equinox of date position of star is 05:59:40.0 +15:50:14
Stellar brightness G=10.4, use SENSEUP=4 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 68 degrees from the moon. Moon is 80% illuminated.
Apparent brightness V=23.1

[RECON map]
Object is 30.7 AU from the Sun and 31.2 AU from the Earth.
Apparent velocity is 20.3 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 240 seconds.
The 1-sigma cross-track error in the shadow position is 1568 km.
The sky-plane scale is 22638.9 km/arcsec.

The object has an absolute magnitude Hv=8.0
Diameter=152.8 km assuming a 5% albedo -- 7.4 sec chord
Diameter=62.4 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VY130, (2024/04/19 03:40UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:29.3 +07:24:34  0.4  8.47  70
Alhena         06:39:06.9 +16:22:35  1.9  9.47  58
137 Tau        05:53:45.2 +14:10:33  5.5  2.20  69
PPM 121677     05:59:42.2 +15:49:39  8.5  0.01  68
04VY130        05:59:44.4 +15:50:14 10.4        67
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 3.7 sigma about the mid-time.
The median site spacing is 41.0 km RECON observability=0.2 and success probability=16.3%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	03:43:27	-13.5	AT	Up	25.8	262.6	Low	03:28:27 - 03:58:27	1746
Kamloops	03:43:06	-6.7	NT	Up	35.0	250.8	Up	03:28:06 - 03:58:06	1451
Kelowna	03:43:10	-7.6	NT	Up	34.7	252.2	Up	03:28:10 - 03:58:10	1387
Peachland	03:43:10	-7.5	NT	Up	34.9	252.0	Up	03:28:10 - 03:58:10	1374
Summerland	03:43:10	-7.6	NT	Up	34.9	252.2	Up	03:28:10 - 03:58:10	1361
Penticton	03:43:11	-7.7	NT	Up	34.8	252.3	Up	03:28:11 - 03:58:11	1356
Oliver	03:43:12	-7.9	NT	Up	34.9	252.6	Up	03:28:12 - 03:58:12	1324
Anarchist Mountain Observatory	03:43:12	-8.1	NT	Up	34.9	252.9	Up	03:28:12 - 03:58:12	1310
Okanogan	03:43:14	-8.2	NT	Up	35.2	253.1	Up	03:28:14 - 03:58:14	1248
Victoria	03:43:04	-5.9	CT	Up	37.6	249.5	Up	03:28:04 - 03:58:04	1225
Brewster	03:43:14	-8.3	NT	Up	35.4	253.1	Up	03:28:14 - 03:58:14	1221
Manson/Chelan	03:43:14	-8.1	NT	Up	35.7	252.9	Up	03:28:14 - 03:58:14	1198
Wenatchee	03:43:15	-8.2	NT	Up	35.9	253.1	Up	03:28:15 - 03:58:15	1151
Ellensburg	03:43:15	-8.3	NT	Up	36.2	253.2	Up	03:28:15 - 03:58:15	1110
Yakima	03:43:16	-8.5	NT	Up	36.3	253.5	Up	03:28:16 - 03:58:16	1072
Toppenish/White Swan	03:43:17	-8.7	NT	Up	36.3	253.8	Up	03:28:17 - 03:58:17	1053
PNWRO	03:43:22	-9.8	NT	Up	35.4	255.3	Up	03:28:22 - 03:58:22	1034
The Dalles	03:43:18	-8.5	NT	Up	37.0	253.7	Up	03:28:18 - 03:58:18	971
Maupin	03:43:18	-8.8	NT	Up	37.1	254.1	Up	03:28:18 - 03:58:18	932
Sisters	03:43:19	-8.8	NT	Up	37.6	254.3	Up	03:28:19 - 03:58:19	842
Bend	03:43:21	-9.1	NT	Up	37.5	254.7	Up	03:28:21 - 03:58:21	822
Oregon Observatory	03:43:21	-9.1	NT	Up	37.7	254.7	Up	03:28:21 - 03:58:21	803
Dunrhomin	03:44:05	-21.4	Dark	Up	26.1	269.1	Low	03:29:05 - 03:59:05	680
Chiloquin	03:43:23	-9.4	NT	Up	38.3	255.4	Up	03:28:23 - 03:58:23	670
Nikitin	03:44:05	-21.5	Dark	Up	26.1	269.2	Low	03:29:05 - 03:59:05	662
CU-SBO	03:44:05	-21.5	Dark	Up	26.1	269.1	Low	03:29:05 - 03:59:05	654
Klamath Falls	03:43:24	-9.6	NT	Up	38.3	255.7	Up	03:28:24 - 03:58:24	637
Cedarville	03:43:30	-11.0	NT	Up	37.3	257.5	Up	03:28:30 - 03:58:30	586
Fall River/Burney	03:43:28	-10.4	NT	Up	38.3	256.9	Up	03:28:28 - 03:58:28	524
Gimple	03:43:31	-11.1	NT	Up	38.1	258.0	Up	03:28:31 - 03:58:31	440
Greenville	03:43:31	-11.1	NT	Up	38.1	258.0	Up	03:28:31 - 03:58:31	439
Quincy	03:43:31	-11.2	NT	Up	38.2	258.1	Up	03:28:31 - 03:58:31	419
Portola	03:43:33	-11.6	NT	Up	37.8	258.6	Up	03:28:33 - 03:58:33	412
Reno	03:43:35	-12.1	AT	Up	37.4	259.3	Up	03:28:35 - 03:58:35	393
Carson City	03:43:36	-12.3	AT	Up	37.4	259.6	Up	03:28:36 - 03:58:36	357
Yerington	03:43:38	-12.8	AT	Up	37.0	260.2	Up	03:28:38 - 03:58:38	345
Gardnerville	03:43:37	-12.4	AT	Up	37.5	259.8	Up	03:28:37 - 03:58:37	333
Hawthorne	03:43:40	-13.4	AT	Up	36.6	260.9	Up	03:28:40 - 03:58:40	305
Lee Vining	03:43:40	-13.3	AT	Up	37.1	261.0	Up	03:28:40 - 03:58:40	241
Bishop	03:43:43	-14.1	AT	Up	36.6	262.0	Up	03:28:43 - 03:58:43	190
Beatty	03:43:49	-15.5	AT	Up	35.4	263.4	Up	03:28:49 - 03:58:49	164
Patrick	03:43:59	-18.3	Dark	Up	33.1	266.3	Up	03:28:59 - 03:58:59	55
Laughlin/Bullhead City	03:43:58	-17.9	AT	Up	33.7	266.0	Up	03:28:58 - 03:58:58	19
Lake Havasu City	03:44:00	-18.4	Dark	Up	33.6	266.6	Up	03:29:00 - 03:59:00	-47
George/Scottsdale	03:44:07	-20.6	Dark	Up	31.5	268.6	Up	03:29:07 - 03:59:07	-88
Wildwood	03:43:49	-15.4	AT	Up	37.2	264.3	Up	03:28:49 - 03:58:49	-150
Idyllwild	03:43:55	-17.0	AT	Up	35.6	265.7	Up	03:28:55 - 03:58:55	-160
Calipatria	03:43:59	-18.2	Dark	Up	34.6	266.9	Up	03:28:59 - 03:58:59	-207
Yuma	03:44:02	-19.1	Dark	Up	33.9	267.7	Up	03:29:02 - 03:59:02	-238

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 04VY130, (2024/04/19 03:40UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  8.47  70
Alhena         06:37:42.8 +16:23:57  1.9  9.47  58
137 Tau        05:52:22.2 +14:10:18  5.5  2.20  69
PPM 121677     05:58:18.2 +15:49:37  8.5  0.01  68
04VY130        05:58:20.4 +15:50:12 10.4        68
Positions are for J2000

Event circumstances last updated at 2023/01/13 04:05:22 UT

RECON