RECON: TNO occultation with 04VG131

Event between 04VG131 and star GA1200:01397987 with event index number of 2734751

Geocentric closest approach at 2024/03/25 03:09:35 UTC

J2000 position of star is 05:10:33.0 +31:27:16
Equinox of date position of star is 05:11:58.0 +31:28:49
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=24.3

[RECON map]
TNO is 36.7 AU from the Sun and 37.0 AU from the Earth.
The TNO is moving 13.3 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 594 seconds.
The 1-sigma cross-track error in the shadow position is 2702 km.
The sky-plane scale is 26809.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.5
Diameter=121.9 km assuming a 5% albedo -- 9.1 sec chord
Diameter=49.8 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 04VG131, (2024/03/25 03:10UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.8 +16:33:22  0.8 16.89 113
3Iot Aur       04:58:34.5 +33:12:08  2.7  3.34 106
14 Aur         05:16:59.2 +32:42:48  5.2  1.61 102
PPM 069989     05:11:39.5 +31:57:32  8.2  0.49 104
PPM 070002     05:12:18.1 +31:39:29 10.0  0.18 103
04VG131        05:12:06.9 +31:28:59 16.2       103
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 1.5 sigma about the mid-time.
The median site spacing is 27.7 km RECON observability=0.2 and success probability=17.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 03:12:36 -16.7 AT Up 49.9 258.1 Up 02:57:36 - 03:27:36 -1289
Kamloops 03:11:50 -8.6 NT Up 59.0 244.4 Up 02:56:50 - 03:26:50 -1867
Kelowna 03:11:58 -9.4 NT Up 58.8 246.8 Up 02:56:58 - 03:26:58 -1912
Peachland 03:11:57 -9.2 NT Up 59.0 246.6 Up 02:56:57 - 03:26:57 -1931
Summerland 03:11:58 -9.3 NT Up 59.0 246.9 Up 02:56:58 - 03:26:58 -1941
Penticton 03:11:59 -9.4 NT Up 58.9 247.2 Up 02:56:59 - 03:26:59 -1944
Oliver 03:12:00 -9.5 NT Up 59.1 247.7 Up 02:57:00 - 03:27:00 -1975
Anarchist Mountain Observatory 03:12:02 -9.6 NT Up 59.0 248.2 Up 02:57:02 - 03:27:02 -1985
Tonasket 03:12:04 -9.7 NT Up 59.2 248.6 Up 02:57:04 - 03:27:04 -2015
Okanogan 03:12:05 -9.7 NT Up 59.4 249.0 Up 02:57:05 - 03:27:05 -2050
Brewster 03:12:05 -9.6 NT Up 59.6 249.2 Up 02:57:05 - 03:27:05 -2080
Manson/Chelan 03:12:04 -9.4 NT Up 59.9 249.1 Up 02:57:04 - 03:27:04 -2111
Victoria 03:11:46 -7.1 NT Up 61.7 244.0 Up 02:56:46 - 03:26:46 -2152
Wenatchee 03:12:05 -9.4 NT Up 60.2 249.7 Up 02:57:05 - 03:27:05 -2160
Ellensburg 03:12:07 -9.4 NT Up 60.5 250.1 Up 02:57:07 - 03:27:07 -2204
Pasco 03:12:16 -10.5 NT Up 59.7 253.0 Up 02:57:16 - 03:27:16 -2226
Dunrhomin 03:13:46 -22.3 Dark Up 50.1 273.1 Up 02:58:46 - 03:28:46 -2232
PNWRO 03:12:18 -10.7 NT Up 59.7 253.6 Up 02:57:18 - 03:27:18 -2241
Yakima 03:12:09 -9.5 NT Up 60.6 250.8 Up 02:57:09 - 03:27:09 -2242
Toppenish/White Swan 03:12:10 -9.6 NT Up 60.6 251.3 Up 02:57:10 - 03:27:10 -2257
Goldendale 03:12:11 -9.5 NT Up 61.0 251.8 Up 02:57:11 - 03:27:11 -2322
The Dalles 03:12:10 -9.3 NT Up 61.3 251.8 Up 02:57:10 - 03:27:10 -2354
Maupin 03:12:12 -9.4 NT Up 61.4 252.6 Up 02:57:12 - 03:27:12 -2390
Redmond 03:12:16 -9.6 NT Up 61.7 254.2 Up 02:57:16 - 03:27:16 -2477
Sisters 03:12:14 -9.3 NT Up 62.0 253.7 Up 02:57:14 - 03:27:14 -2488
Bend 03:12:17 -9.5 NT Up 61.8 254.4 Up 02:57:17 - 03:27:17 -2502
Oregon Observatory 03:12:16 -9.5 NT Up 62.0 254.6 Up 02:57:16 - 03:27:16 -2523
La Pine/Gilchrist 03:12:17 -9.5 NT Up 62.1 254.9 Up 02:57:17 - 03:27:17 -2544
North Lake 03:12:22 -10.0 NT Up 61.7 256.3 Up 02:57:22 - 03:27:22 -2565
Paisley 03:12:26 -10.4 NT Up 61.6 257.7 Up 02:57:26 - 03:27:26 -2605
Lakeview 03:12:30 -10.6 NT Up 61.6 258.8 Up 02:57:30 - 03:27:30 -2646
Chiloquin 03:12:19 -9.4 NT Up 62.6 256.6 Up 02:57:19 - 03:27:19 -2662
Klamath Falls 03:12:22 -9.6 NT Up 62.6 257.3 Up 02:57:22 - 03:27:22 -2692
Cedarville 03:12:33 -10.9 NT Up 61.5 260.2 Up 02:57:33 - 03:27:33 -2702
Fall River/Burney 03:12:28 -10.1 NT Up 62.5 259.9 Up 02:57:28 - 03:27:28 -2791
Susanville 03:12:35 -10.8 NT Up 62.1 261.8 Up 02:57:35 - 03:27:35 -2825
Gimple 03:12:35 -10.7 NT Up 62.3 262.1 Up 02:57:35 - 03:27:35 -2860
Greenville 03:12:34 -10.6 NT Up 62.3 262.1 Up 02:57:34 - 03:27:34 -2862
Portola 03:12:39 -11.1 NT Up 62.0 263.1 Up 02:57:39 - 03:27:39 -2876
Reno 03:12:43 -11.6 NT Up 61.5 264.1 Up 02:57:43 - 03:27:43 -2878
Quincy 03:12:35 -10.7 NT Up 62.3 262.4 Up 02:57:35 - 03:27:35 -2882
Yerington 03:12:50 -12.3 AT Up 61.0 265.6 Up 02:57:50 - 03:27:50 -2907
Carson City 03:12:45 -11.7 NT Up 61.5 264.8 Up 02:57:45 - 03:27:45 -2912
Tonopah 03:13:03 -14.0 AT Up 59.5 268.7 Up 02:58:03 - 03:28:03 -2922
Hawthorne 03:12:55 -12.8 AT Up 60.6 266.9 Up 02:57:55 - 03:27:55 -2932
Gardnerville 03:12:46 -11.8 NT Up 61.5 265.3 Up 02:57:46 - 03:27:46 -2934
Indian Springs 03:13:18 -15.6 AT Up 58.2 272.1 Up 02:58:18 - 03:28:18 -3003
Lee Vining 03:12:54 -12.6 AT Up 61.0 267.5 Up 02:57:54 - 03:27:54 -3004
Beatty 03:13:10 -14.7 AT Up 59.1 270.9 Up 02:58:10 - 03:28:10 -3015
Henderson 03:13:23 -16.3 AT Up 57.6 273.3 Up 02:58:23 - 03:28:23 -3025
Bishop 03:13:01 -13.3 AT Up 60.5 269.1 Up 02:58:01 - 03:28:01 -3034
Patrick 03:13:32 -17.4 AT Up 56.6 274.8 Up 02:58:32 - 03:28:32 -3038
Kingman/Dolan Springs 03:13:32 -17.3 AT Up 56.8 275.1 Up 02:58:32 - 03:28:32 -3067
Laughlin/Bullhead City 03:13:29 -16.9 AT Up 57.2 274.9 Up 02:58:29 - 03:28:29 -3091
George/Scottsdale 03:13:49 -19.5 Dark Up 54.7 278.2 Up 02:58:49 - 03:28:49 -3112
Mohave Valley 03:13:31 -17.0 AT Up 57.2 275.3 Up 02:58:31 - 03:28:31 -3117
Lake Havasu City 03:13:33 -17.3 AT Up 56.9 276.0 Up 02:58:33 - 03:28:33 -3145
Parker 03:13:35 -17.4 AT Up 56.9 276.6 Up 02:58:35 - 03:28:35 -3177
Blythe 03:13:37 -17.3 AT Up 57.0 277.3 Up 02:58:37 - 03:28:37 -3240
Idyllwild 03:13:25 -15.5 AT Up 58.8 276.2 Up 02:58:25 - 03:28:25 -3317
CPSLO 03:12:57 -11.9 NT Up 62.3 271.5 Up 02:57:57 - 03:27:57 -3321
Calipatria 03:13:33 -16.6 AT Up 57.8 277.7 Up 02:58:33 - 03:28:33 -3326
Yuma 03:13:40 -17.5 AT Up 56.9 278.7 Up 02:58:40 - 03:28:40 -3330
Wildwood 03:13:13 -13.9 AT Up 60.5 274.8 Up 02:58:13 - 03:28:13 -3359

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, (2024/03/25 03:10UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 16.89 113
3Iot Aur       04:56:59.6 +33:09:58  2.7  3.34 106
14 Aur         05:15:24.3 +32:41:15  5.2  1.61 102
PPM 069989     05:10:05.3 +31:55:49  8.2  0.49 104
PPM 070002     05:10:44.1 +31:37:47 10.0  0.18 103
04VG131        05:10:33.0 +31:27:16 16.2       104
Positions are for J2000

Event circumstances last updated at 2021/12/02 01:53:21 UT

Marc W. Buie, Southwest Research Institute

RECON