RECON: TNO occultation with 04VG131

Event between 04VG131 and star GA1200:01423797 with event index number of 2734744

Geocentric closest approach at 2024/01/10 09:19:35 UTC

J2000 position of star is 05:12:12.5 +31:40:29
Equinox of date position of star is 05:13:37.6 +31:41:59
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=24.2

[RECON map]
TNO is 36.6 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 381 seconds.
The 1-sigma cross-track error in the shadow position is 2647 km.
The sky-plane scale is 25958.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.5
Diameter=121.9 km assuming a 5% albedo -- 5.8 sec chord
Diameter=49.8 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 04VG131, (2024/01/10 09:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.1 +16:33:21  0.8 17.26 153
3Iot Aur       04:58:33.7 +33:12:07  2.7  3.54 161
14 Aur         05:16:58.4 +32:42:47  5.2  1.22 165
PPM 069989     05:11:38.7 +31:57:31  8.2  0.52 164
PPM 070002     05:12:17.3 +31:39:28 10.0  0.32 164
PPM 070022     05:13:14.6 +31:40:21 10.9  0.11 165
04VG131        05:13:45.8 +31:42:07 16.9       165
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 2.4 sigma about the mid-time.
The median site spacing is 28.9 km RECON observability=1.0 and success probability=15.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:16:26 -51.4 Dark Down 39.7 272.5 Up 09:01:26 - 09:31:26 -2358
Kamloops 09:16:50 -58.4 Dark Down 48.7 262.3 Up 09:01:50 - 09:31:50 -2849
Kelowna 09:16:46 -58.8 Dark Down 48.3 263.9 Up 09:01:46 - 09:31:46 -2909
Peachland 09:16:47 -59.0 Dark Down 48.5 263.8 Up 09:01:47 - 09:31:47 -2926
Summerland 09:16:46 -59.1 Dark Down 48.4 264.1 Up 09:01:46 - 09:31:46 -2939
Penticton 09:16:46 -59.1 Dark Down 48.3 264.2 Up 09:01:46 - 09:31:46 -2943
Oliver 09:16:44 -59.4 Dark Down 48.4 264.6 Up 09:01:44 - 09:31:44 -2977
Anarchist Mountain Observatory 09:16:44 -59.5 Dark Down 48.3 265.0 Up 09:01:44 - 09:31:44 -2990
Tonasket 09:16:43 -59.7 Dark Down 48.4 265.3 Up 09:01:43 - 09:31:43 -3022
Okanogan 09:16:43 -60.1 Dark Down 48.5 265.5 Up 09:01:43 - 09:31:43 -3058
Brewster 09:16:42 -60.4 Dark Down 48.6 265.7 Up 09:01:42 - 09:31:42 -3090
Manson/Chelan 09:16:43 -60.7 Dark Down 48.9 265.6 Up 09:01:43 - 09:31:43 -3119
Victoria 09:16:52 -61.2 Dark Down 51.0 262.2 Up 09:01:52 - 09:31:52 -3127
Wenatchee 09:16:42 -61.1 Dark Down 49.0 266.0 Up 09:01:42 - 09:31:42 -3170
Ellensburg 09:16:42 -61.6 Dark Down 49.2 266.3 Up 09:01:42 - 09:31:42 -3217
Pasco 09:16:37 -61.6 Dark Down 48.3 268.2 Up 09:01:37 - 09:31:37 -3257
Yakima 09:16:41 -61.9 Dark Down 49.3 266.8 Up 09:01:41 - 09:31:41 -3258
Toppenish/White Swan 09:16:40 -62.0 Dark Down 49.2 267.1 Up 09:01:40 - 09:31:40 -3275
PNWRO 09:16:36 -61.7 Dark Down 48.1 268.7 Up 09:01:36 - 09:31:36 -3276
Goldendale 09:16:40 -62.6 Dark Down 49.5 267.5 Up 09:01:40 - 09:31:40 -3341
The Dalles 09:16:41 -63.0 Dark Down 49.7 267.4 Up 09:01:41 - 09:31:41 -3373
Maupin 09:16:39 -63.3 Dark Down 49.7 268.0 Up 09:01:39 - 09:31:39 -3412
Dunrhomin 09:15:51 -57.4 Dark Down 37.7 282.4 Up 09:00:51 - 09:30:51 -3434
Redmond 09:16:37 -64.0 Dark Down 49.8 269.0 Up 09:01:37 - 09:31:37 -3506
Sisters 09:16:38 -64.2 Dark Down 50.1 268.7 Up 09:01:38 - 09:31:38 -3513
Bend 09:16:38 -64.3 Dark Down 49.9 269.2 Up 09:01:38 - 09:31:38 -3531
Oregon Observatory 09:16:38 -64.5 Dark Down 50.0 269.3 Up 09:01:38 - 09:31:38 -3552
La Pine/Gilchrist 09:16:38 -64.7 Dark Down 50.0 269.5 Up 09:01:38 - 09:31:38 -3575
North Lake 09:16:35 -64.8 Dark Down 49.6 270.4 Up 09:01:35 - 09:31:35 -3604
Paisley 09:16:33 -65.0 Dark Down 49.3 271.3 Up 09:01:33 - 09:31:33 -3652
Chiloquin 09:16:36 -65.7 Dark Down 50.3 270.6 Up 09:01:36 - 09:31:36 -3697
Lakeview 09:16:31 -65.3 Dark Down 49.2 272.0 Up 09:01:31 - 09:31:31 -3699
Klamath Falls 09:16:35 -66.0 Dark Down 50.2 271.0 Up 09:01:35 - 09:31:35 -3731
Cedarville 09:16:29 -65.7 Dark Down 49.0 272.9 Up 09:01:29 - 09:31:29 -3762
Fall River/Burney 09:16:32 -66.7 Dark Down 49.9 272.7 Up 09:01:32 - 09:31:32 -3843
Susanville 09:16:28 -66.8 Dark Down 49.3 273.9 Up 09:01:28 - 09:31:28 -3889
Gimple 09:16:29 -67.1 Dark Down 49.5 274.1 Up 09:01:29 - 09:31:29 -3923
Greenville 09:16:29 -67.2 Dark Down 49.5 274.0 Up 09:01:29 - 09:31:29 -3925
Quincy 09:16:29 -67.3 Dark Down 49.5 274.2 Up 09:01:29 - 09:31:29 -3946
Portola 09:16:27 -67.2 Dark Down 49.2 274.7 Up 09:01:27 - 09:31:27 -3947
Reno 09:16:24 -67.0 Dark Down 48.6 275.3 Up 09:01:24 - 09:31:24 -3957
Carson City 09:16:23 -67.2 Dark Down 48.6 275.7 Up 09:01:23 - 09:31:23 -3994
Yerington 09:16:21 -67.0 Dark Down 48.1 276.3 Up 09:01:21 - 09:31:21 -3997
Gardnerville 09:16:24 -67.4 Dark Down 48.5 276.0 Up 09:01:24 - 09:31:24 -4018
Hawthorne 09:16:19 -67.0 Dark Down 47.6 277.1 Up 09:01:19 - 09:31:19 -4030
Tonopah 09:16:15 -66.5 Dark Down 46.5 278.3 Up 09:01:15 - 09:31:15 -4039
Lee Vining 09:16:19 -67.7 Dark Down 47.9 277.4 Up 09:01:19 - 09:31:19 -4102
Bishop 09:16:16 -67.6 Dark Down 47.3 278.4 Up 09:01:16 - 09:31:16 -4144
Beatty 09:16:11 -66.9 Dark Down 46.0 279.7 Up 09:01:11 - 09:31:11 -4145
Indian Springs 09:16:08 -66.3 Dark Down 45.1 280.5 Up 09:01:08 - 09:31:08 -4146
Henderson 09:16:05 -66.1 Dark Down 44.4 281.3 Up 09:01:05 - 09:31:05 -4180
Patrick 09:16:01 -65.6 Dark Down 43.4 282.4 Up 09:01:01 - 09:31:01 -4209
Kingman/Dolan Springs 09:16:01 -65.9 Dark Down 43.5 282.5 Up 09:01:01 - 09:31:01 -4238
Laughlin/Bullhead City 09:16:03 -66.3 Dark Down 43.9 282.3 Up 09:01:03 - 09:31:03 -4257
Mohave Valley 09:16:01 -66.4 Dark Down 43.9 282.6 Up 09:01:01 - 09:31:01 -4284
George/Scottsdale 09:15:52 -64.8 Dark Down 41.4 284.7 Up 09:00:52 - 09:30:52 -4316
Lake Havasu City 09:16:00 -66.4 Dark Down 43.6 283.0 Up 09:01:00 - 09:31:00 -4318
Parker 09:16:00 -66.5 Dark Down 43.5 283.4 Up 09:01:00 - 09:31:00 -4353
Blythe 09:16:00 -67.0 Dark Down 43.6 283.8 Up 09:01:00 - 09:31:00 -4417
CPSLO 09:16:20 -70.3 Dark Down 48.8 279.7 Up 09:01:20 - 09:31:20 -4422
Idyllwild 09:16:05 -68.5 Dark Down 45.3 282.9 Up 09:01:05 - 09:31:05 -4471
Wildwood 09:16:11 -69.7 Dark Down 46.9 281.8 Up 09:01:11 - 09:31:11 -4490
Calipatria 09:16:02 -67.9 Dark Down 44.2 283.9 Up 09:01:02 - 09:31:02 -4498
Yuma 09:15:58 -67.4 Dark Down 43.4 284.6 Up 09:00:58 - 09:30:58 -4514

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 04VG131, (2024/01/10 09:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 17.26 153
3Iot Aur       04:56:59.6 +33:09:58  2.7  3.54 161
14 Aur         05:15:24.3 +32:41:15  5.2  1.22 165
PPM 069989     05:10:05.3 +31:55:49  8.2  0.52 164
PPM 070002     05:10:44.1 +31:37:47 10.0  0.32 164
PPM 070022     05:11:41.4 +31:38:41 10.9  0.11 165
04VG131        05:12:12.5 +31:40:29 16.9       165
Positions are for J2000

Event circumstances last updated at 2021/12/02 01:45:55 UT

Marc W. Buie, Southwest Research Institute

RECON