RECON: TNO occultation with 03UN284

Event between 03UN284 and star GA1140:01045257 with event index number of 1270184

Geocentric closest approach at 2024/02/18 05:16:43 UTC

J2000 position of star is 05:12:22.9 +25:09:54
Equinox of date position of star is 05:13:36.2 +25:11:15
Stellar brightness G=13.8, use SENSEUP=64
Star is 3 degrees from the moon. Moon is 67% illuminated.
TNO apparent brightness V=23.8

[RECON map]
TNO is 42.5 AU from the Sun and 42.2 AU from the Earth.
The TNO is moving 6.4 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 2055 seconds.
The 1-sigma cross-track error in the shadow position is 5335 km.
The sky-plane scale is 30586.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=197.7 km assuming a 5% albedo -- 31.0 sec chord
Diameter=80.7 km assuming a 30% albedo -- 12.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 03UN284, (2024/02/18 05:17UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.5 +16:33:22  0.8 12.14  13
Alnath         05:27:49.2 +28:37:32  1.6  4.63   4
103 Tau        05:09:35.0 +24:17:41  5.3  1.32   3
PPM 094178     05:14:32.0 +24:25:25  8.4  0.78   3
PPM 094181     05:15:09.0 +25:17:47  9.8  0.31   3
PPM 094175     05:14:19.1 +25:09:29 11.0  0.11   3
03UN284        05:13:52.0 +25:11:32 13.8         3
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 0.4 sigma about the mid-time.
The median site spacing is 26.1 km RECON observability=1.0 and success probability=7.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 05:10:13 -36.7 Dark Up 57.0 230.9 Up 04:55:13 - 05:25:13 -5098
Kelowna 05:10:16 -36.8 Dark Up 57.3 231.1 Up 04:55:16 - 05:25:16 -5138
Summerland 05:10:17 -36.9 Dark Up 57.6 231.2 Up 04:55:17 - 05:25:17 -5165
Penticton 05:10:15 -37.0 Dark Up 57.6 231.4 Up 04:55:15 - 05:25:15 -5172
Oliver 05:10:12 -37.1 Dark Up 57.8 231.8 Up 04:55:12 - 05:25:12 -5209
Anarchist Mountain Observatory 05:10:12 -37.3 Dark Up 57.8 232.3 Up 04:55:12 - 05:25:12 -5226
Tonasket 05:10:12 -37.4 Dark Up 58.0 232.6 Up 04:55:12 - 05:25:12 -5259
Victoria 05:10:51 -35.2 Dark Up 60.1 227.3 Up 04:55:51 - 05:25:51 -5272
Okanogan 05:10:12 -37.5 Dark Up 58.3 232.8 Up 04:55:12 - 05:25:12 -5294
Brewster 05:10:14 -37.5 Dark Up 58.6 232.9 Up 04:55:14 - 05:25:14 -5322
Manson/Chelan 05:10:18 -37.4 Dark Up 58.9 232.7 Up 04:55:18 - 05:25:18 -5344
Entiat 05:10:18 -37.5 Dark Up 59.1 232.9 Up 04:55:18 - 05:25:18 -5366
Wenatchee 05:10:19 -37.5 Dark Up 59.3 233.1 Up 04:55:19 - 05:25:19 -5393
Ellensburg 05:10:19 -37.6 Dark Up 59.6 233.3 Up 04:55:19 - 05:25:19 -5436
Yakima 05:10:17 -37.7 Dark Up 59.9 233.9 Up 04:55:17 - 05:25:17 -5479
Toppenish/White Swan 05:10:17 -37.9 Dark Up 59.9 234.4 Up 04:55:17 - 05:25:17 -5502
Pasco 05:10:02 -38.7 Dark Up 59.3 236.3 Up 04:55:02 - 05:25:02 -5515
PNWRO 05:10:01 -39.0 Dark Up 59.3 236.9 Up 04:55:01 - 05:25:01 -5541
Goldendale 05:10:21 -37.9 Dark Up 60.5 234.6 Up 04:55:21 - 05:25:21 -5560
The Dalles 05:10:25 -37.8 Dark Up 60.8 234.4 Up 04:55:25 - 05:25:25 -5583
Maupin 05:10:21 -38.0 Dark Up 61.0 235.2 Up 04:55:21 - 05:25:21 -5628
Sisters 05:10:23 -38.1 Dark Up 61.8 235.8 Up 04:55:23 - 05:25:23 -5721
Redmond 05:10:21 -38.3 Dark Up 61.6 236.4 Up 04:55:21 - 05:25:21 -5724
Bend 05:10:20 -38.3 Dark Up 61.8 236.5 Up 04:55:20 - 05:25:20 -5747
Oregon Observatory 05:10:23 -38.3 Dark Up 61.9 236.6 Up 04:55:23 - 05:25:23 -5765
La Pine/Gilchrist 05:10:22 -38.4 Dark Up 62.1 236.9 Up 04:55:22 - 05:25:22 -5787
North Lake 05:10:17 -38.9 Dark Up 62.0 238.4 Up 04:55:17 - 05:25:17 -5834
Paisley 05:10:09 -39.4 Dark Up 62.0 239.7 Up 04:55:09 - 05:25:09 -5893
Klamath Falls 05:10:21 -38.7 Dark Up 63.0 238.8 Up 04:55:21 - 05:25:21 -5942
Lakeview 05:10:09 -39.7 Dark Up 62.2 240.8 Up 04:55:09 - 05:25:09 -5948
Cedarville 05:10:05 -40.0 Dark Up 62.4 242.1 Up 04:55:05 - 05:25:05 -6019
Fall River/Burney 05:10:18 -39.4 Dark Up 63.4 241.4 Up 04:55:18 - 05:25:18 -6070
Niwot 05:07:23 -50.2 Dark Up 52.6 259.3 Up 04:52:23 - 05:22:23 -6112
SwRI 05:07:25 -50.2 Dark Up 52.7 259.3 Up 04:52:25 - 05:22:25 -6124
Susanville 05:10:11 -40.2 Dark Up 63.2 243.5 Up 04:55:11 - 05:25:11 -6139
Greenville 05:10:11 -40.0 Dark Up 63.5 243.6 Up 04:55:11 - 05:25:11 -6169
Gimple 05:10:11 -40.1 Dark Up 63.5 243.7 Up 04:55:11 - 05:25:11 -6169
Quincy 05:10:11 -40.1 Dark Up 63.6 243.9 Up 04:55:11 - 05:25:11 -6191
Portola 05:10:07 -40.5 Dark Up 63.3 244.8 Up 04:55:07 - 05:25:07 -6205
Reno 05:10:00 -41.0 Dark Up 63.0 246.0 Up 04:55:00 - 05:25:00 -6234
Carson City 05:09:58 -41.2 Dark Up 63.2 246.7 Up 04:54:58 - 05:24:58 -6274
Yerington 05:09:51 -41.7 Dark Up 62.8 247.8 Up 04:54:51 - 05:24:51 -6295
Gardnerville 05:09:57 -41.3 Dark Up 63.2 247.2 Up 04:54:57 - 05:24:57 -6300
Hawthorne 05:09:44 -42.2 Dark Up 62.6 249.2 Up 04:54:44 - 05:24:44 -6346
Tonopah 05:09:25 -43.4 Dark Up 61.8 251.5 Up 04:54:25 - 05:24:25 -6396
Lee Vining 05:09:49 -42.1 Dark Up 63.1 249.7 Up 04:54:49 - 05:24:49 -6407
Bishop 05:09:38 -42.8 Dark Up 62.8 251.6 Up 04:54:38 - 05:24:38 -6473
Beatty 05:09:20 -44.1 Dark Up 61.8 254.1 Up 04:54:20 - 05:24:20 -6522
Indian Springs 05:09:06 -45.0 Dark Up 61.1 255.6 Up 04:54:06 - 05:24:06 -6556
Henderson 05:09:00 -45.7 Dark Up 60.7 257.2 Up 04:54:00 - 05:24:00 -6613
Searchlight/Boulder City 05:08:59 -46.0 Dark Up 60.8 258.3 Up 04:53:59 - 05:23:59 -6676
Patrick 05:08:41 -46.7 Dark Up 60.0 259.2 Up 04:53:41 - 05:23:41 -6678
CPSLO 05:10:05 -41.8 Dark Up 65.1 253.2 Up 04:55:05 - 05:25:05 -6698
Kingman/Dolan Springs 05:08:48 -46.7 Dark Up 60.1 259.4 Up 04:53:48 - 05:23:48 -6703
Laughlin/Bullhead City 05:08:53 -46.3 Dark Up 60.6 259.1 Up 04:53:53 - 05:23:53 -6707
DCO 05:08:37 -47.4 Dark Up 59.5 260.3 Up 04:53:37 - 05:23:37 -6709
Mohave Valley 05:08:48 -46.4 Dark Up 60.6 259.5 Up 04:53:48 - 05:23:48 -6738
Lake Havasu City 05:08:48 -46.8 Dark Up 60.5 260.4 Up 04:53:48 - 05:23:48 -6781
Parker 05:08:49 -46.9 Dark Up 60.5 261.1 Up 04:53:49 - 05:23:49 -6819
Wildwood 05:09:38 -43.7 Dark Up 63.9 257.7 Up 04:54:38 - 05:24:38 -6832
George/Scottsdale 05:08:18 -48.8 Dark Up 58.7 263.5 Up 04:53:18 - 05:23:18 -6857
Idyllwild 05:09:16 -45.2 Dark Up 62.5 259.9 Up 04:54:16 - 05:24:16 -6870
Blythe 05:08:53 -46.9 Dark Up 60.8 261.8 Up 04:53:53 - 05:23:53 -6878
Calipatria 05:09:01 -46.3 Dark Up 61.6 262.0 Up 04:54:01 - 05:24:01 -6935
Yuma 05:08:48 -47.1 Dark Up 61.0 263.4 Up 04:53:48 - 05:23:48 -6981

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 03UN284, (2024/02/18 05:17UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 12.14  13
Alnath         05:26:17.5 +28:36:23  1.6  4.63   4
103 Tau        05:08:06.6 +24:15:54  5.3  1.32   3
PPM 094178     05:13:03.4 +24:23:49  8.4  0.78   3
PPM 094181     05:13:39.8 +25:16:11  9.8  0.31   3
PPM 094175     05:12:50.1 +25:07:51 11.0  0.11   3
03UN284        05:12:22.9 +25:09:54 13.8         3
Positions are for J2000

Event circumstances last updated at 2019/11/13 21:38:58 UT

Marc W. Buie, Southwest Research Institute

RECON