RECON: TNO occultation with 98UR43

Event between 98UR43 and star GA1180:01868420 with event index number of 1142281

Geocentric closest approach at 2022/01/13 06:07:10 UTC

J2000 position of star is 05:51:54.9 +28:38:40
Equinox of date position of star is 05:53:08.8 +28:38:53
Stellar brightness G=15.1, use SENSEUP=128
Star is 27 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 31.0 AU from the Sun and 30.1 AU from the Earth.
The TNO is moving 21.7 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 680 seconds.
The 1-sigma cross-track error in the shadow position is 2477 km.
The sky-plane scale is 21837.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=131.2 km assuming a 5% albedo -- 6.0 sec chord
Diameter=53.6 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 98UR43, (2022/01/13 06:07UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:21.9 +07:24:34  0.4 21.25  31
Alnath         05:27:41.2 +28:37:27  1.6  5.62  22
PPM 095117     05:57:57.8 +28:56:37  6.5  1.06  28
PPM 094981     05:52:56.4 +28:05:46  8.2  0.56  27
PPM 094997     05:53:45.3 +28:38:10  9.1  0.10  27
98UR43         05:53:18.7 +28:38:54 15.1        28
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 1.3 sigma about the mid-time.
The median site spacing is 24.3 km RECON observability=1.0 and success probability=20.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:07:18 -53.2 Dark Up 68.6 173.2 Up 05:52:18 - 06:22:18 1914
Summerland 06:07:19 -53.2 Dark Up 68.9 172.4 Up 05:52:19 - 06:22:19 1884
Penticton 06:07:18 -53.3 Dark Up 69.0 172.6 Up 05:52:18 - 06:22:18 1877
Okanagan Falls 06:07:19 -53.5 Dark Up 69.2 172.5 Up 05:52:19 - 06:22:19 1857
Oliver 06:07:19 -53.6 Dark Up 69.3 172.5 Up 05:52:19 - 06:22:19 1840
Anarchist Mountain Observatory 06:07:18 -53.8 Dark Up 69.5 172.9 Up 05:52:18 - 06:22:18 1821
Oroville 06:07:19 -53.8 Dark Up 69.6 172.7 Up 05:52:19 - 06:22:19 1814
Tonasket 06:07:18 -53.9 Dark Up 69.8 172.7 Up 05:52:18 - 06:22:18 1790
Okanogan 06:07:19 -54.1 Dark Up 70.1 172.2 Up 05:52:19 - 06:22:19 1755
Brewster 06:07:20 -54.1 Dark Up 70.4 171.5 Up 05:52:20 - 06:22:20 1728
Manson/Chelan 06:07:21 -54.0 Dark Up 70.6 170.5 Up 05:52:21 - 06:22:21 1707
Entiat 06:07:21 -54.1 Dark Up 70.8 170.2 Up 05:52:21 - 06:22:21 1685
Wenatchee 06:07:22 -54.2 Dark Up 71.0 169.8 Up 05:52:22 - 06:22:22 1658
Ellensburg 06:07:23 -54.4 Dark Up 71.4 169.0 Up 05:52:23 - 06:22:23 1616
Yakima 06:07:23 -54.6 Dark Up 71.8 168.7 Up 05:52:23 - 06:22:23 1573
Toppenish/White Swan 06:07:22 -54.8 Dark Up 72.0 169.1 Up 05:52:22 - 06:22:22 1550
Pasco 06:07:18 -55.6 Dark Up 72.3 172.6 Up 05:52:18 - 06:22:18 1531
PNWRO 06:07:18 -55.8 Dark Up 72.5 173.1 Up 05:52:18 - 06:22:18 1504
George/Umatilla 06:07:19 -55.6 Dark Up 72.6 171.8 Up 05:52:19 - 06:22:19 1497
Goldendale 06:07:24 -54.9 Dark Up 72.5 167.5 Up 05:52:24 - 06:22:24 1493
The Dalles 06:07:25 -54.8 Dark Up 72.7 166.3 Up 05:52:25 - 06:22:25 1472
Maupin 06:07:26 -55.1 Dark Up 73.1 166.3 Up 05:52:26 - 06:22:26 1427
Madras/Culver 06:07:26 -55.3 Dark Up 73.6 165.8 Up 05:52:26 - 06:22:26 1369
Sisters 06:07:28 -55.2 Dark Up 73.9 164.1 Up 05:52:28 - 06:22:28 1336
Redmond 06:07:26 -55.5 Dark Up 73.9 165.3 Up 05:52:26 - 06:22:26 1331
Bend 06:07:27 -55.5 Dark Up 74.1 164.7 Up 05:52:27 - 06:22:27 1309
Oregon Observatory 06:07:27 -55.5 Dark Up 74.3 164.1 Up 05:52:27 - 06:22:27 1291
La Pine/Gilchrist 06:07:28 -55.6 Dark Up 74.5 163.7 Up 05:52:28 - 06:22:28 1269
North Lake 06:07:26 -56.2 Dark Up 75.0 165.2 Up 05:52:26 - 06:22:26 1220
Paisley 06:07:24 -56.7 Dark Up 75.6 165.9 Up 05:52:24 - 06:22:24 1158
Chiloquin 06:07:30 -55.9 Dark Up 75.4 161.3 Up 05:52:30 - 06:22:30 1152
Klamath Falls 06:07:29 -56.1 Dark Up 75.8 161.2 Up 05:52:29 - 06:22:29 1115
Lakeview 06:07:24 -57.0 Dark Up 76.1 166.1 Up 05:52:24 - 06:22:24 1103
Tulelake 06:07:28 -56.4 Dark Up 76.1 161.9 Up 05:52:28 - 06:22:28 1084
Cedarville 06:07:23 -57.5 Dark Up 76.8 166.1 Up 05:52:23 - 06:22:23 1031
Fall River/Burney 06:07:28 -56.9 Dark Up 77.0 161.0 Up 05:52:28 - 06:22:28 986
Susanville 06:07:26 -57.7 Dark Up 77.8 162.9 Up 05:52:26 - 06:22:26 913
Greenville 06:07:27 -57.6 Dark Up 78.0 161.4 Up 05:52:27 - 06:22:27 885
Gimple 06:07:27 -57.7 Dark Up 78.0 161.7 Up 05:52:27 - 06:22:27 884
Niwot 06:06:26 -67.1 Dark Up 75.3 222.1 Up 05:51:26 - 06:21:26 876
SwRI 06:06:27 -67.1 Dark Up 75.4 222.1 Up 05:51:27 - 06:21:27 864
Quincy 06:07:27 -57.7 Dark Up 78.2 161.1 Up 05:52:27 - 06:22:27 863
Portola 06:07:25 -58.1 Dark Up 78.4 162.8 Up 05:52:25 - 06:22:25 846
Reno 06:07:23 -58.6 Dark Up 78.8 165.2 Up 05:52:23 - 06:22:23 814
Carson City 06:07:23 -58.8 Dark Up 79.1 164.8 Up 05:52:23 - 06:22:23 775
Yerington 06:07:20 -59.3 Dark Up 79.4 167.5 Up 05:52:20 - 06:22:20 751
Gardnerville 06:07:23 -58.9 Dark Up 79.4 164.7 Up 05:52:23 - 06:22:23 748
Hawthorne 06:07:19 -59.9 Dark Up 80.0 169.5 Up 05:52:19 - 06:22:19 698
Tonopah 06:07:13 -61.1 Dark Up 80.6 176.4 Up 05:52:13 - 06:22:13 641
Lee Vining 06:07:21 -59.8 Dark Up 80.4 166.4 Up 05:52:21 - 06:22:21 638
Bishop 06:07:18 -60.6 Dark Up 81.1 169.5 Up 05:52:18 - 06:22:18 569
Beatty 06:07:11 -61.9 Dark Up 81.7 178.6 Up 05:52:11 - 06:22:11 513
Lone Pine 06:07:17 -61.1 Dark Up 81.9 170.5 Up 05:52:17 - 06:22:17 484
Indian Springs 06:07:07 -62.8 Dark Up 82.0 185.3 Up 05:52:07 - 06:22:07 474
Henderson 06:07:04 -63.6 Dark Up 82.5 190.2 Up 05:52:04 - 06:22:04 414
CPSLO 06:07:28 -59.7 Dark Up 82.5 151.5 Up 05:52:28 - 06:22:28 355
Searchlight/Boulder City 06:07:04 -63.9 Dark Up 83.0 191.5 Up 05:52:04 - 06:22:04 350
Patrick 06:07:00 -64.6 Dark Up 82.9 198.9 Up 05:52:00 - 06:22:00 343
Kingman/Dolan Springs 06:07:01 -64.6 Dark Up 83.1 198.1 Up 05:52:01 - 06:22:01 319
Laughlin/Bullhead City 06:07:03 -64.2 Dark Up 83.3 194.5 Up 05:52:03 - 06:22:03 317
DCO 06:06:57 -65.3 Dark Up 83.0 204.4 Up 05:51:57 - 06:21:57 309
Mohave Valley 06:07:03 -64.4 Dark Up 83.5 195.2 Up 05:52:03 - 06:22:03 287
Lake Havasu City 06:07:02 -64.7 Dark Up 83.9 198.1 Up 05:52:02 - 06:22:02 242
Wildwood 06:07:20 -61.6 Dark Up 84.3 161.7 Up 05:52:20 - 06:22:20 211
Parker 06:07:02 -64.9 Dark Up 84.2 199.4 Up 05:52:02 - 06:22:02 204
Idyllwild 06:07:12 -63.2 Dark Up 84.9 178.2 Up 05:52:12 - 06:22:12 164
Blythe 06:07:03 -64.9 Dark Up 84.8 198.6 Up 05:52:03 - 06:22:03 146
Calipatria 06:07:07 -64.3 Dark Up 85.4 190.9 Up 05:52:07 - 06:22:07 93
Yuma 06:07:03 -65.2 Dark Up 85.6 202.1 Up 05:52:03 - 06:22:03 44

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, (2022/01/13 06:07UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 21.25  31
Alnath         05:26:17.5 +28:36:23  1.6  5.62  22
PPM 095117     05:56:33.8 +28:56:32  6.5  1.06  28
PPM 094981     05:51:33.0 +28:05:31  8.2  0.56  27
PPM 094997     05:52:21.5 +28:37:56  9.1  0.10  27
98UR43         05:51:54.9 +28:38:40 15.1        27
Positions are for J2000

Event circumstances last updated at 2019/06/08 02:56:47 UT

Marc W. Buie, Southwest Research Institute

RECON