RECON: TNO occultation with 04VY130

Event between 04VY130 and star GA1060:01162851 with event index number of 2568333

Geocentric closest approach at 2021/12/31 07:10:46 UTC

J2000 position of star is 05:41:01.1 +16:04:11
Equinox of date position of star is 05:42:17.0 +16:04:46
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 158 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 30.3 AU from the Sun and 29.3 AU from the Earth.
The TNO is moving 23.5 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 405 seconds.
The 1-sigma cross-track error in the shadow position is 1371 km.
The sky-plane scale is 21254.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=152.8 km assuming a 5% albedo -- 6.5 sec chord
Diameter=62.4 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VY130, (2021/12/31 07:11UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:21.8 +07:24:34  0.4  9.33 151
Bellatrix      05:26:18.7 +06:22:04  1.6 10.47 157
126 Tau        05:42:34.0 +16:32:36  4.6  0.47 158
PPM 121244     05:41:34.0 +16:24:07  7.9  0.37 158
PPM 121257     05:42:15.7 +16:03:14  9.5  0.03 158
04VY130        05:42:17.2 +16:04:46 16.6       158
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 2.2 sigma about the mid-time.
The median site spacing is 25.3 km RECON observability=1.0 and success probability=25.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:09:56 -61.0 Dark Down 51.7 205.7 Up 06:54:56 - 07:24:56 2781
Kamloops 07:10:37 -60.5 Dark Down 55.4 183.3 Up 06:55:37 - 07:25:37 2634
Kelowna 07:10:34 -61.5 Dark Down 56.1 184.9 Up 06:55:34 - 07:25:34 2558
Peachland 07:10:35 -61.5 Dark Down 56.3 184.4 Up 06:55:35 - 07:25:35 2548
Summerland 07:10:35 -61.6 Dark Down 56.4 184.6 Up 06:55:35 - 07:25:35 2534
Penticton 07:10:35 -61.7 Dark Down 56.5 184.8 Up 06:55:35 - 07:25:35 2528
Oliver 07:10:35 -62.1 Dark Down 56.8 184.9 Up 06:55:35 - 07:25:35 2495
Anarchist Mountain Observatory 07:10:34 -62.3 Dark Down 57.0 185.2 Up 06:55:34 - 07:25:34 2479
Tonasket 07:10:34 -62.5 Dark Down 57.3 185.1 Up 06:55:34 - 07:25:34 2450
Victoria 07:10:47 -61.4 Dark Down 57.5 178.1 Up 06:55:47 - 07:25:47 2439
Okanogan 07:10:35 -62.8 Dark Down 57.6 184.9 Up 06:55:35 - 07:25:35 2419
Brewster 07:10:35 -63.0 Dark Down 57.9 184.6 Up 06:55:35 - 07:25:35 2393
Manson/Chelan 07:10:36 -63.0 Dark Down 58.1 184.0 Up 06:55:36 - 07:25:36 2374
Wenatchee 07:10:37 -63.4 Dark Down 58.6 183.7 Up 06:55:37 - 07:25:37 2329
Ellensburg 07:10:37 -63.7 Dark Down 59.0 183.3 Up 06:55:37 - 07:25:37 2290
Yakima 07:10:38 -64.0 Dark Down 59.4 183.4 Up 06:55:38 - 07:25:38 2251
Toppenish/White Swan 07:10:37 -64.3 Dark Down 59.7 183.7 Up 06:55:37 - 07:25:37 2230
Pasco 07:10:33 -64.8 Dark Down 59.7 186.1 Up 06:55:33 - 07:25:33 2217
PNWRO 07:10:32 -65.1 Dark Down 59.9 186.6 Up 06:55:32 - 07:25:32 2193
Goldendale 07:10:39 -64.6 Dark Down 60.2 182.9 Up 06:55:39 - 07:25:39 2178
The Dalles 07:10:40 -64.7 Dark Down 60.5 182.3 Up 06:55:40 - 07:25:40 2156
Maupin 07:10:39 -65.1 Dark Down 60.9 182.5 Up 06:55:39 - 07:25:39 2116
Sisters 07:10:41 -65.6 Dark Down 61.8 181.6 Up 06:55:41 - 07:25:41 2031
Redmond 07:10:40 -65.8 Dark Down 61.8 182.4 Up 06:55:40 - 07:25:40 2028
Bend 07:10:40 -65.9 Dark Down 62.0 182.1 Up 06:55:40 - 07:25:40 2007
Oregon Observatory 07:10:41 -66.0 Dark Down 62.2 181.9 Up 06:55:41 - 07:25:41 1990
La Pine/Gilchrist 07:10:41 -66.2 Dark Down 62.4 181.8 Up 06:55:41 - 07:25:41 1970
North Lake 07:10:39 -66.8 Dark Down 62.8 183.0 Up 06:55:39 - 07:25:39 1927
Paisley 07:10:38 -67.4 Dark Down 63.3 183.9 Up 06:55:38 - 07:25:38 1871
Chiloquin 07:10:42 -66.9 Dark Down 63.5 181.1 Up 06:55:42 - 07:25:42 1861
Klamath Falls 07:10:42 -67.2 Dark Down 63.8 181.3 Up 06:55:42 - 07:25:42 1827
Lakeview 07:10:37 -67.9 Dark Down 63.8 184.3 Up 06:55:37 - 07:25:37 1821
Cedarville 07:10:37 -68.5 Dark Down 64.5 184.8 Up 06:55:37 - 07:25:37 1755
Fall River/Burney 07:10:41 -68.3 Dark Down 65.0 182.2 Up 06:55:41 - 07:25:41 1708
Dunrhomin 07:09:44 -72.8 Dark Down 61.7 216.2 Up 06:54:44 - 07:24:44 1653
Susanville 07:10:38 -69.2 Dark Down 65.6 183.9 Up 06:55:38 - 07:25:38 1643
Greenville 07:10:39 -69.2 Dark Down 65.9 183.3 Up 06:55:39 - 07:25:39 1615
Gimple 07:10:39 -69.3 Dark Down 65.9 183.5 Up 06:55:39 - 07:25:39 1615
Quincy 07:10:39 -69.4 Dark Down 66.1 183.3 Up 06:55:39 - 07:25:39 1595
Portola 07:10:37 -69.7 Dark Down 66.2 184.5 Up 06:55:37 - 07:25:37 1582
Reno 07:10:35 -70.2 Dark Down 66.4 186.0 Up 06:55:35 - 07:25:35 1554
Carson City 07:10:35 -70.5 Dark Down 66.8 186.2 Up 06:55:35 - 07:25:35 1517
Yerington 07:10:33 -71.0 Dark Down 66.9 187.8 Up 06:55:33 - 07:25:33 1496
Gardnerville 07:10:35 -70.7 Dark Down 67.0 186.4 Up 06:55:35 - 07:25:35 1492
Hawthorne 07:10:31 -71.6 Dark Down 67.3 189.2 Up 06:55:31 - 07:25:31 1448
Tonopah 07:10:25 -72.6 Dark Down 67.6 192.9 Up 06:55:25 - 07:25:25 1400
Lee Vining 07:10:33 -71.8 Dark Down 67.9 188.2 Up 06:55:33 - 07:25:33 1391
Bishop 07:10:30 -72.6 Dark Down 68.4 190.3 Up 06:55:30 - 07:25:30 1328
Beatty 07:10:24 -73.8 Dark Down 68.6 194.7 Up 06:55:24 - 07:25:24 1280
Indian Springs 07:10:20 -74.5 Dark Down 68.7 197.7 Up 06:55:20 - 07:25:20 1247
Henderson 07:10:17 -75.2 Dark Down 69.0 199.8 Up 06:55:17 - 07:25:17 1191
Patrick 07:10:12 -76.2 Dark Down 69.3 203.3 Up 06:55:12 - 07:25:12 1127
CPSLO 07:10:38 -72.9 Dark Down 70.7 184.9 Up 06:55:38 - 07:25:38 1116
Kingman/Dolan Springs 07:10:13 -76.3 Dark Down 69.5 203.0 Up 06:55:13 - 07:25:13 1103
Laughlin/Bullhead City 07:10:15 -76.2 Dark Down 69.7 201.7 Up 06:55:15 - 07:25:15 1100
Mohave Valley 07:10:15 -76.4 Dark Down 70.0 202.0 Up 06:55:15 - 07:25:15 1072
Lake Havasu City 07:10:14 -76.8 Dark Down 70.3 203.1 Up 06:55:14 - 07:25:14 1030
Parker 07:10:14 -77.1 Dark Down 70.6 203.6 Up 06:55:14 - 07:25:14 993
Wildwood 07:10:30 -75.0 Dark Down 71.7 191.4 Up 06:55:30 - 07:25:30 987
George/Scottsdale 07:10:04 -78.5 Dark Down 70.0 210.4 Up 06:55:04 - 07:25:04 952
Idyllwild 07:10:23 -76.3 Dark Down 71.6 197.2 Up 06:55:23 - 07:25:23 948
Blythe 07:10:15 -77.4 Dark Down 71.1 203.3 Up 06:55:15 - 07:25:15 937
Calipatria 07:10:18 -77.4 Dark Down 71.9 201.3 Up 06:55:18 - 07:25:18 884
Yuma 07:10:15 -78.2 Dark Down 72.0 204.3 Up 06:55:15 - 07:25:15 839

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, (2021/12/31 07:11UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.33 151
Bellatrix      05:25:07.8 +06:20:58  1.6 10.47 157
126 Tau        05:41:17.7 +16:32:02  4.6  0.47 158
PPM 121244     05:40:17.7 +16:23:31  7.9  0.37 158
PPM 121257     05:40:59.7 +16:02:39  9.5  0.03 158
04VY130        05:41:01.1 +16:04:11 16.6       158
Positions are for J2000

Event circumstances last updated at 2021/12/03 01:43:26 UT

Marc W. Buie, Southwest Research Institute

RECON