RECON: TNO occultation with 04VU131

Event between 04VU131 and star GA1100:00517842 with event index number of 1320492

Geocentric closest approach at 2024/02/10 07:13:27 UTC

J2000 position of star is 04:06:06.6 +20:23:14
Equinox of date position of star is 04:07:14.8 +20:26:18
Stellar brightness G=14.8, use SENSEUP=128
Star is 98 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=23.8

[RECON map]
TNO is 41.8 AU from the Sun and 41.6 AU from the Earth.
The TNO is moving 2.2 km/sec on the sky relative to the star, or, 0.3 arcsec/hr.
The 1-sigma error in the time of the event is 3352 seconds.
The 1-sigma cross-track error in the shadow position is 5395 km.
The sky-plane scale is 30143.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=189.7 km assuming a 5% albedo -- 87.7 sec chord
Diameter=77.4 km assuming a 30% albedo -- 35.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04VU131, (2024/02/10 07:13UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.4 +16:33:22  0.8  8.06 103
44Zet Per      03:55:39.2 +31:57:12  2.8 11.80  98
43Ome1Tau      04:10:34.4 +19:40:16  5.5  1.06  98
PPM 119606     04:07:01.2 +20:01:08  8.4  0.45  97
PPM 093259     04:08:03.5 +20:21:58  9.7  0.15  98
04VU131        04:07:31.3 +20:27:03 14.8        98
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 0.3 sigma about the mid-time.
The median site spacing is 21.0 km RECON observability=1.0 and success probability=8.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:42:20 -50.2 Dark Down 34.9 260.2 Up 06:27:20 - 06:57:20 -128
Summerland 06:42:17 -50.3 Dark Down 35.2 260.2 Up 06:27:17 - 06:57:17 -160
Penticton 06:42:13 -50.4 Dark Down 35.1 260.3 Up 06:27:13 - 06:57:13 -164
Okanagan Falls 06:42:09 -50.6 Dark Down 35.2 260.4 Up 06:27:09 - 06:57:09 -182
Oliver 06:42:04 -50.7 Dark Down 35.2 260.5 Up 06:27:04 - 06:57:04 -197
Anarchist Mountain Observatory 06:41:57 -50.9 Dark Down 35.1 260.8 Up 06:26:57 - 06:56:57 -209
Oroville 06:41:56 -50.9 Dark Down 35.2 260.8 Up 06:26:56 - 06:56:56 -218
Tonasket 06:41:50 -51.1 Dark Down 35.2 260.9 Up 06:26:50 - 06:56:50 -239
Okanogan 06:41:44 -51.3 Dark Down 35.4 261.0 Up 06:26:44 - 06:56:44 -273
Brewster 06:41:42 -51.4 Dark Down 35.6 261.0 Up 06:26:42 - 06:56:42 -301
Manson/Chelan 06:41:43 -51.5 Dark Down 35.9 260.9 Up 06:26:43 - 06:56:43 -327
Entiat 06:41:37 -51.6 Dark Down 36.0 260.9 Up 06:26:37 - 06:56:37 -349
Wenatchee 06:41:33 -51.7 Dark Down 36.1 261.0 Up 06:26:33 - 06:56:33 -375
Ellensburg 06:41:28 -52.0 Dark Down 36.3 261.1 Up 06:26:28 - 06:56:28 -417
Yakima 06:41:18 -52.2 Dark Down 36.4 261.4 Up 06:26:18 - 06:56:18 -456
Pasco 06:40:44 -53.1 Dark Down 35.6 262.7 Up 06:25:44 - 06:55:44 -463
Toppenish/White Swan 06:41:11 -52.5 Dark Down 36.3 261.7 Up 06:26:11 - 06:56:11 -474
PNWRO 06:40:34 -53.3 Dark Down 35.5 263.0 Up 06:25:34 - 06:55:34 -483
George/Umatilla 06:40:40 -53.2 Dark Down 35.8 262.7 Up 06:25:40 - 06:55:40 -499
Goldendale 06:41:06 -52.7 Dark Down 36.7 261.7 Up 06:26:06 - 06:56:06 -534
The Dalles 06:41:07 -52.7 Dark Down 37.0 261.6 Up 06:26:07 - 06:56:07 -562
Maupin 06:40:55 -53.0 Dark Down 37.0 261.9 Up 06:25:55 - 06:55:55 -600
Madras/Culver 06:40:44 -53.4 Dark Down 37.2 262.3 Up 06:25:44 - 06:55:44 -654
Redmond 06:40:39 -53.6 Dark Down 37.3 262.5 Up 06:25:39 - 06:55:39 -690
Sisters 06:40:46 -53.4 Dark Down 37.5 262.2 Up 06:25:46 - 06:55:46 -694
Bend 06:40:33 -53.7 Dark Down 37.4 262.5 Up 06:25:33 - 06:55:33 -713
Oregon Observatory 06:40:34 -53.8 Dark Down 37.5 262.6 Up 06:25:34 - 06:55:34 -732
La Pine/Gilchrist 06:40:31 -53.9 Dark Down 37.6 262.7 Up 06:25:31 - 06:55:31 -753
Niwot 06:34:37 -62.9 Dark Down 26.6 275.0 Low 06:19:37 - 06:49:37 -764
SwRI 06:34:37 -63.0 Dark Down 26.7 275.0 Low 06:19:37 - 06:49:37 -776
North Lake 06:40:08 -54.5 Dark Down 37.3 263.4 Up 06:25:08 - 06:55:08 -785
Paisley 06:39:49 -55.0 Dark Down 37.2 264.0 Up 06:24:49 - 06:54:49 -833
Chiloquin 06:40:13 -54.5 Dark Down 38.1 263.2 Up 06:25:13 - 06:55:13 -869
Lakeview 06:39:37 -55.4 Dark Down 37.1 264.5 Up 06:24:37 - 06:54:37 -880
Klamath Falls 06:40:05 -54.7 Dark Down 38.1 263.5 Up 06:25:05 - 06:55:05 -901
Tulelake 06:39:53 -55.0 Dark Down 37.9 263.9 Up 06:24:53 - 06:54:53 -923
Cedarville 06:39:21 -56.0 Dark Down 37.1 265.1 Up 06:24:21 - 06:54:21 -942
Fall River/Burney 06:39:33 -55.7 Dark Down 38.0 264.6 Up 06:24:33 - 06:54:33 -1012
Susanville 06:39:08 -56.5 Dark Down 37.6 265.5 Up 06:24:08 - 06:54:08 -1062
Gimple 06:39:04 -56.5 Dark Down 37.8 265.6 Up 06:24:04 - 06:54:04 -1093
Greenville 06:39:05 -56.5 Dark Down 37.8 265.5 Up 06:24:05 - 06:54:05 -1095
Quincy 06:39:02 -56.6 Dark Down 37.9 265.7 Up 06:24:02 - 06:54:02 -1115
Portola 06:38:51 -56.9 Dark Down 37.5 266.1 Up 06:23:51 - 06:53:51 -1119
Reno 06:38:35 -57.4 Dark Down 37.1 266.7 Up 06:23:35 - 06:53:35 -1134
Carson City 06:38:24 -57.7 Dark Down 37.1 266.9 Up 06:23:24 - 06:53:24 -1169
Yerington 06:38:07 -58.1 Dark Down 36.7 267.4 Up 06:23:07 - 06:53:07 -1177
Gardnerville 06:38:21 -57.9 Dark Down 37.1 267.1 Up 06:23:21 - 06:53:21 -1193
Hawthorne 06:37:48 -58.7 Dark Down 36.4 268.1 Up 06:22:48 - 06:52:48 -1214
Tonopah 06:37:13 -59.7 Dark Down 35.4 269.2 Up 06:22:13 - 06:52:13 -1233
Lee Vining 06:37:49 -58.8 Dark Down 36.8 268.2 Up 06:22:49 - 06:52:49 -1281
Bishop 06:37:23 -59.6 Dark Down 36.3 269.0 Up 06:22:23 - 06:52:23 -1327
Beatty 06:36:43 -60.7 Dark Down 35.1 270.2 Up 06:21:43 - 06:51:43 -1341
Indian Springs 06:36:18 -61.5 Dark Down 34.3 271.1 Up 06:21:18 - 06:51:18 -1352
Henderson 06:35:52 -62.2 Dark Down 33.9 271.8 Up 06:20:52 - 06:50:52 -1392
Lone Pine 06:37:08 -60.3 Dark Down 36.1 269.7 Up 06:22:08 - 06:52:08 -1398
Patrick 06:35:19 -63.3 Dark Down 33.0 272.7 Up 06:20:19 - 06:50:19 -1432
DCO 06:35:03 -63.8 Dark Down 32.5 273.3 Up 06:20:03 - 06:50:03 -1447
Searchlight/Boulder City 06:35:43 -62.7 Dark Down 33.8 272.2 Up 06:20:43 - 06:50:43 -1449
Kingman/Dolan Springs 06:35:22 -63.3 Dark Down 33.2 272.8 Up 06:20:22 - 06:50:22 -1459
Laughlin/Bullhead City 06:35:26 -63.0 Dark Down 33.6 272.5 Up 06:20:26 - 06:50:26 -1472
Mohave Valley 06:35:27 -63.2 Dark Down 33.6 272.7 Up 06:20:27 - 06:50:27 -1500
Lake Havasu City 06:35:12 -63.6 Dark Down 33.4 273.1 Up 06:20:12 - 06:50:12 -1536
Parker 06:35:03 -63.9 Dark Down 33.4 273.3 Up 06:20:03 - 06:50:03 -1571
CPSLO 06:37:36 -59.5 Dark Down 38.1 269.3 Up 06:22:36 - 06:52:36 -1583
Blythe 06:35:02 -64.1 Dark Down 33.6 273.5 Up 06:20:02 - 06:50:02 -1632
Idyllwild 06:35:45 -62.8 Dark Down 35.2 272.4 Up 06:20:45 - 06:50:45 -1666
Wildwood 06:36:32 -61.4 Dark Down 36.6 271.2 Up 06:21:32 - 06:51:32 -1668
Calipatria 06:35:15 -63.8 Dark Down 34.3 273.3 Up 06:20:15 - 06:50:15 -1704
Yuma 06:34:51 -64.6 Dark Down 33.6 274.0 Up 06:19:51 - 06:49:51 -1729

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 04VU131, (2024/02/10 07:13UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  8.06 103
44Zet Per      03:54:07.9 +31:53:01  2.8 11.80  98
43Ome1Tau      04:09:10.1 +19:36:33  5.5  1.06  98
PPM 119606     04:05:36.8 +19:57:18  8.4  0.45  97
PPM 093259     04:06:38.8 +20:18:10  9.7  0.15  98
04VU131        04:06:06.6 +20:23:14 14.8        98
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:32:13 UT

Marc W. Buie, Southwest Research Institute

RECON