RECON: TNO occultation with 98UR43

Event between 98UR43 and star GA1180:02274502 with event index number of 1327381

Geocentric closest approach at 2024/01/13 07:24:26 UTC

J2000 position of star is 06:13:21.7 +29:11:48
Equinox of date position of star is 06:14:35.9 +29:11:24
Stellar brightness G=14.7, use SENSEUP=128
Star is 136 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 31.2 AU from the Sun and 30.2 AU from the Earth.
The TNO is moving 22.8 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 978 seconds.
The 1-sigma cross-track error in the shadow position is 4542 km.
The sky-plane scale is 21924.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=131.2 km assuming a 5% albedo -- 5.8 sec chord
Diameter=53.6 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 98UR43, (2024/01/13 07:24UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:47.2 +27:57:58  1.1 20.18 156
Alnath         05:27:48.8 +28:37:32  1.6 10.31 125
44Kap Aur      06:16:54.6 +29:29:14  4.3  0.53 136
PPM 095567     06:12:46.5 +28:54:01  8.0  0.55 135
PPM 095617     06:14:48.3 +29:01:35  8.8  0.16 136
98UR43         06:14:53.5 +29:11:18 14.7       136
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 0.9 sigma about the mid-time.
The median site spacing is 24.2 km RECON observability=1.0 and success probability=8.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:23:55 -60.5 Dark Down 67.8 205.0 Up 07:08:55 - 07:38:55 -4252
Summerland 07:23:56 -60.7 Dark Down 68.2 204.7 Up 07:08:56 - 07:38:56 -4285
Penticton 07:23:55 -60.8 Dark Down 68.2 205.0 Up 07:08:55 - 07:38:55 -4291
Okanagan Falls 07:23:55 -60.9 Dark Down 68.4 205.2 Up 07:08:55 - 07:38:55 -4311
Oliver 07:23:55 -61.1 Dark Down 68.5 205.4 Up 07:08:55 - 07:38:55 -4327
Anarchist Mountain Observatory 07:23:54 -61.3 Dark Down 68.6 206.0 Up 07:08:54 - 07:38:54 -4344
Oroville 07:23:55 -61.3 Dark Down 68.7 205.9 Up 07:08:55 - 07:38:55 -4352
Tonasket 07:23:54 -61.6 Dark Down 68.9 206.2 Up 07:08:54 - 07:38:54 -4376
Okanogan 07:23:55 -61.8 Dark Down 69.3 206.2 Up 07:08:55 - 07:38:55 -4412
Brewster 07:23:55 -62.0 Dark Down 69.6 206.1 Up 07:08:55 - 07:38:55 -4442
Manson/Chelan 07:23:56 -62.1 Dark Down 69.8 205.5 Up 07:08:56 - 07:38:56 -4467
Entiat 07:23:56 -62.3 Dark Down 70.1 205.6 Up 07:08:56 - 07:38:56 -4490
Wenatchee 07:23:56 -62.5 Dark Down 70.3 205.6 Up 07:08:56 - 07:38:56 -4517
Ellensburg 07:23:57 -62.9 Dark Down 70.8 205.6 Up 07:08:57 - 07:38:57 -4562
Yakima 07:23:57 -63.2 Dark Down 71.1 206.1 Up 07:08:57 - 07:38:57 -4605
Toppenish/White Swan 07:23:56 -63.5 Dark Down 71.3 206.8 Up 07:08:56 - 07:38:56 -4627
Pasco 07:23:52 -63.9 Dark Down 71.0 210.1 Up 07:08:52 - 07:38:52 -4631
PNWRO 07:23:51 -64.2 Dark Down 71.1 211.0 Up 07:08:51 - 07:38:51 -4655
George/Umatilla 07:23:53 -64.2 Dark Down 71.3 210.0 Up 07:08:53 - 07:38:53 -4668
Goldendale 07:23:57 -63.8 Dark Down 71.9 206.4 Up 07:08:57 - 07:38:57 -4688
The Dalles 07:23:58 -63.9 Dark Down 72.2 205.8 Up 07:08:58 - 07:38:58 -4715
Maupin 07:23:57 -64.3 Dark Down 72.6 206.6 Up 07:08:57 - 07:38:57 -4758
Madras/Culver 07:23:57 -64.8 Dark Down 73.1 207.3 Up 07:08:57 - 07:38:57 -4817
Redmond 07:23:57 -65.1 Dark Down 73.4 207.7 Up 07:08:57 - 07:38:57 -4855
Sisters 07:23:59 -65.0 Dark Down 73.5 206.6 Up 07:08:59 - 07:38:59 -4855
Bend 07:23:58 -65.3 Dark Down 73.6 207.7 Up 07:08:58 - 07:38:58 -4879
Oregon Observatory 07:23:58 -65.4 Dark Down 73.8 207.6 Up 07:08:58 - 07:38:58 -4899
La Pine/Gilchrist 07:23:58 -65.5 Dark Down 74.0 207.7 Up 07:08:58 - 07:38:58 -4921
North Lake 07:23:56 -66.1 Dark Down 74.2 210.2 Up 07:08:56 - 07:38:56 -4963
Paisley 07:23:54 -66.7 Dark Down 74.5 212.2 Up 07:08:54 - 07:38:54 -5020
Chiloquin 07:23:59 -66.3 Dark Down 75.1 208.5 Up 07:08:59 - 07:38:59 -5042
Lakeview 07:23:53 -67.2 Dark Down 74.9 213.8 Up 07:08:53 - 07:38:53 -5073
Klamath Falls 07:23:59 -66.7 Dark Down 75.4 209.4 Up 07:08:59 - 07:38:59 -5079
Niwot 07:22:59 -71.2 Dark Down 67.2 249.1 Up 07:07:59 - 07:37:59 -5105
Tulelake 07:23:57 -67.0 Dark Down 75.5 210.9 Up 07:08:57 - 07:38:57 -5106
SwRI 07:22:59 -71.3 Dark Down 67.3 249.2 Up 07:07:59 - 07:37:59 -5118
Cedarville 07:23:52 -67.9 Dark Down 75.4 215.7 Up 07:08:52 - 07:38:52 -5143
Fall River/Burney 07:23:56 -67.8 Dark Down 76.3 213.1 Up 07:08:56 - 07:38:56 -5204
Susanville 07:23:53 -68.6 Dark Down 76.5 216.9 Up 07:08:53 - 07:38:53 -5267
Gimple 07:23:54 -68.8 Dark Down 76.8 216.9 Up 07:08:54 - 07:38:54 -5298
Greenville 07:23:54 -68.8 Dark Down 76.8 216.6 Up 07:08:54 - 07:38:54 -5299
Quincy 07:23:54 -68.9 Dark Down 77.0 217.2 Up 07:08:54 - 07:38:54 -5321
Portola 07:23:53 -69.2 Dark Down 76.9 219.0 Up 07:08:53 - 07:38:53 -5331
Reno 07:23:50 -69.7 Dark Down 76.7 221.8 Up 07:08:50 - 07:38:50 -5355
Carson City 07:23:50 -70.0 Dark Down 77.0 222.9 Up 07:08:50 - 07:38:50 -5394
Yerington 07:23:47 -70.4 Dark Down 76.8 225.4 Up 07:08:47 - 07:38:47 -5410
Gardnerville 07:23:49 -70.3 Dark Down 77.1 223.8 Up 07:08:49 - 07:38:49 -5420
Hawthorne 07:23:46 -71.1 Dark Down 76.8 228.3 Up 07:08:46 - 07:38:46 -5455
Tonopah 07:23:39 -72.0 Dark Down 76.3 233.6 Up 07:08:39 - 07:38:39 -5493
Lee Vining 07:23:47 -71.3 Dark Down 77.5 228.8 Up 07:08:47 - 07:38:47 -5521
Bishop 07:23:43 -72.1 Dark Down 77.4 232.9 Up 07:08:43 - 07:38:43 -5580
Beatty 07:23:37 -73.2 Dark Down 76.6 238.7 Up 07:08:37 - 07:38:37 -5614
Indian Springs 07:23:33 -73.8 Dark Down 76.0 242.2 Up 07:08:33 - 07:38:33 -5638
Lone Pine 07:23:41 -72.9 Dark Down 77.6 236.6 Up 07:08:41 - 07:38:41 -5660
Henderson 07:23:30 -74.5 Dark Down 75.8 245.5 Up 07:08:30 - 07:38:30 -5688
Patrick 07:23:25 -75.4 Dark Down 75.2 249.7 Up 07:08:25 - 07:38:25 -5743
Searchlight/Boulder City 07:23:29 -75.1 Dark Down 76.0 247.7 Up 07:08:29 - 07:38:29 -5750
DCO 07:23:22 -75.9 Dark Down 74.8 251.8 Up 07:08:22 - 07:38:22 -5767
Kingman/Dolan Springs 07:23:26 -75.6 Dark Down 75.4 250.2 Up 07:08:26 - 07:38:26 -5770
Laughlin/Bullhead City 07:23:28 -75.5 Dark Down 75.8 249.4 Up 07:08:28 - 07:38:28 -5779
Mohave Valley 07:23:28 -75.7 Dark Down 75.9 250.4 Up 07:08:28 - 07:38:28 -5808
CPSLO 07:23:51 -72.8 Dark Down 80.1 234.5 Up 07:08:51 - 07:38:51 -5825
Lake Havasu City 07:23:26 -76.2 Dark Down 75.8 252.3 Up 07:08:26 - 07:38:26 -5849
Parker 07:23:26 -76.5 Dark Down 75.9 253.7 Up 07:08:26 - 07:38:26 -5887
Wildwood 07:23:43 -74.8 Dark Down 79.2 246.0 Up 07:08:43 - 07:38:43 -5940
Blythe 07:23:27 -76.9 Dark Down 76.3 255.3 Up 07:08:27 - 07:38:27 -5948
Idyllwild 07:23:35 -76.0 Dark Down 77.9 251.5 Up 07:08:35 - 07:38:35 -5960
Calipatria 07:23:30 -77.0 Dark Down 77.2 256.0 Up 07:08:30 - 07:38:30 -6013
Yuma 07:23:26 -77.7 Dark Down 76.5 259.0 Up 07:08:26 - 07:38:26 -6050

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 98UR43, (2024/01/13 07:24UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 20.18 156
Alnath         05:26:17.5 +28:36:23  1.6 10.31 125
44Kap Aur      06:15:22.6 +29:29:48  4.3  0.53 136
PPM 095567     06:11:14.8 +28:54:26  8.0  0.55 135
PPM 095617     06:13:16.6 +29:02:05  8.8  0.16 136
98UR43         06:13:21.7 +29:11:48 14.7       136
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:24:51 UT

Marc W. Buie, Southwest Research Institute

RECON