RECON: TNO occultation with 98UR43

Event between 98UR43 and star GA1180:01701754 with event index number of 1028289

Geocentric closest approach at 2021/01/01 06:55:47 UTC

J2000 position of star is 05:42:34.9 +28:17:58
Equinox of date position of star is 05:43:47.3 +28:18:26
Stellar brightness G=15.5, use SENSEUP=128
Star is 40 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 30.9 AU from the Sun and 30.0 AU from the Earth.
The TNO is moving 23.4 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 323 seconds.
The 1-sigma cross-track error in the shadow position is 1772 km.
The sky-plane scale is 21750.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=131.2 km assuming a 5% albedo -- 5.6 sec chord
Diameter=53.6 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 98UR43, (2021/01/01 06:56UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.7 +16:33:00  0.8 19.36  57
Alnath         05:27:37.3 +28:37:24  1.6  3.59  44
PPM 094619     05:40:38.5 +29:13:31  5.9  1.16  41
PPM 094678     05:42:58.3 +28:27:56  8.5  0.26  40
PPM 094701     05:43:23.6 +28:14:59  9.7  0.13  40
98UR43         05:43:54.6 +28:18:29 15.5        40
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 2.8 sigma about the mid-time.
The median site spacing is 22.9 km RECON observability=1.0 and success probability=13.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:55:46 -60.2 Dark Up 68.4 180.1 Up 06:40:46 - 07:10:46 -2133
Summerland 06:55:47 -60.1 Dark Up 68.4 179.3 Up 06:40:47 - 07:10:47 -2137
Penticton 06:55:46 -60.4 Dark Up 68.8 179.7 Up 06:40:46 - 07:10:46 -2170
Okanagan Falls 06:55:46 -60.6 Dark Up 69.0 179.7 Up 06:40:46 - 07:10:46 -2190
Oliver 06:55:46 -60.7 Dark Up 69.1 179.7 Up 06:40:46 - 07:10:46 -2207
Anarchist Mountain Observatory 06:55:46 -61.0 Dark Up 69.3 180.2 Up 06:40:46 - 07:10:46 -2225
Oroville 06:55:46 -61.0 Dark Up 69.4 180.0 Up 06:40:46 - 07:10:46 -2232
Tonasket 06:55:46 -61.2 Dark Up 69.6 180.0 Up 06:40:46 - 07:10:46 -2257
Okanogan 06:55:46 -61.4 Dark Up 69.9 179.7 Up 06:40:46 - 07:10:46 -2292
Brewster 06:55:47 -61.6 Dark Up 70.2 179.1 Up 06:40:47 - 07:10:47 -2319
Manson/Chelan 06:55:48 -61.6 Dark Up 70.4 178.2 Up 06:40:48 - 07:10:48 -2341
Entiat 06:55:48 -61.8 Dark Up 70.6 178.0 Up 06:40:48 - 07:10:48 -2363
Wenatchee 06:55:49 -61.9 Dark Up 70.9 177.7 Up 06:40:49 - 07:10:49 -2390
Ellensburg 06:55:50 -62.2 Dark Up 71.3 177.0 Up 06:40:50 - 07:10:50 -2433
Yakima 06:55:50 -62.5 Dark Up 71.7 176.9 Up 06:40:50 - 07:10:50 -2476
Toppenish/White Swan 06:55:49 -62.7 Dark Up 71.9 177.4 Up 06:40:49 - 07:10:49 -2499
Pasco 06:55:45 -63.3 Dark Up 72.0 180.9 Up 06:40:45 - 07:10:45 -2514
PNWRO 06:55:44 -63.6 Dark Up 72.3 181.6 Up 06:40:44 - 07:10:44 -2541
George/Umatilla 06:55:46 -63.5 Dark Up 72.4 180.3 Up 06:40:46 - 07:10:46 -2549
Goldendale 06:55:51 -63.0 Dark Up 72.4 176.0 Up 06:40:51 - 07:10:51 -2556
The Dalles 06:55:52 -63.0 Dark Up 72.7 174.9 Up 06:40:52 - 07:10:52 -2579
Maupin 06:55:51 -63.4 Dark Up 73.1 175.1 Up 06:40:51 - 07:10:51 -2624
Madras/Culver 06:55:52 -63.8 Dark Up 73.6 174.8 Up 06:40:52 - 07:10:52 -2682
Sisters 06:55:54 -63.8 Dark Up 73.9 173.3 Up 06:40:54 - 07:10:54 -2716
Redmond 06:55:52 -64.0 Dark Up 74.0 174.6 Up 06:40:52 - 07:10:52 -2720
Bend 06:55:53 -64.1 Dark Up 74.2 174.1 Up 06:40:53 - 07:10:53 -2742
Oregon Observatory 06:55:53 -64.2 Dark Up 74.3 173.6 Up 06:40:53 - 07:10:53 -2760
La Pine/Gilchrist 06:55:54 -64.3 Dark Up 74.5 173.3 Up 06:40:54 - 07:10:54 -2782
North Lake 06:55:51 -64.9 Dark Up 75.0 175.1 Up 06:40:51 - 07:10:51 -2830
Paisley 06:55:50 -65.5 Dark Up 75.6 176.2 Up 06:40:50 - 07:10:50 -2891
Chiloquin 06:55:55 -65.0 Dark Up 75.6 171.6 Up 06:40:55 - 07:10:55 -2900
Klamath Falls 06:55:54 -65.2 Dark Up 76.0 171.6 Up 06:40:54 - 07:10:54 -2937
Lakeview 06:55:50 -66.0 Dark Up 76.1 176.8 Up 06:40:50 - 07:10:50 -2946
Tulelake 06:55:53 -65.6 Dark Up 76.2 172.6 Up 06:40:53 - 07:10:53 -2967
Cedarville 06:55:49 -66.6 Dark Up 76.8 177.3 Up 06:40:49 - 07:10:49 -3017
Fall River/Burney 06:55:54 -66.3 Dark Up 77.2 172.4 Up 06:40:54 - 07:10:54 -3066
Niwot 06:54:57 -72.8 Dark Up 73.5 228.8 Up 06:39:57 - 07:09:57 -3135
Susanville 06:55:51 -67.1 Dark Up 77.8 175.0 Up 06:40:51 - 07:10:51 -3136
SwRI 06:54:56 -72.8 Dark Up 73.6 228.8 Up 06:39:56 - 07:09:56 -3147
Greenville 06:55:52 -67.1 Dark Up 78.1 173.7 Up 06:40:52 - 07:10:52 -3165
Gimple 06:55:52 -67.2 Dark Up 78.1 174.0 Up 06:40:52 - 07:10:52 -3166
Quincy 06:55:52 -67.3 Dark Up 78.3 173.6 Up 06:40:52 - 07:10:52 -3188
Portola 06:55:51 -67.6 Dark Up 78.5 175.6 Up 06:40:51 - 07:10:51 -3203
Reno 06:55:48 -68.2 Dark Up 78.8 178.4 Up 06:40:48 - 07:10:48 -3233
Carson City 06:55:48 -68.4 Dark Up 79.1 178.4 Up 06:40:48 - 07:10:48 -3273
Yerington 06:55:46 -68.9 Dark Up 79.3 181.4 Up 06:40:46 - 07:10:46 -3295
Gardnerville 06:55:48 -68.6 Dark Up 79.4 178.6 Up 06:40:48 - 07:10:48 -3299
Hawthorne 06:55:44 -69.5 Dark Up 79.8 184.0 Up 06:40:44 - 07:10:44 -3347
Tonopah 06:55:39 -70.6 Dark Up 80.1 191.3 Up 06:40:39 - 07:10:39 -3400
Lee Vining 06:55:46 -69.7 Dark Up 80.3 181.7 Up 06:40:46 - 07:10:46 -3408
Bishop 06:55:43 -70.5 Dark Up 80.9 185.8 Up 06:40:43 - 07:10:43 -3475
Beatty 06:55:37 -71.7 Dark Up 81.1 195.3 Up 06:40:37 - 07:10:37 -3527
Lone Pine 06:55:42 -71.2 Dark Up 81.6 188.3 Up 06:40:42 - 07:10:42 -3559
Indian Springs 06:55:33 -72.5 Dark Up 81.2 201.8 Up 06:40:33 - 07:10:33 -3563
Henderson 06:55:31 -73.3 Dark Up 81.4 206.9 Up 06:40:31 - 07:10:31 -3621
Searchlight/Boulder City 06:55:30 -73.8 Dark Up 81.9 209.1 Up 06:40:30 - 07:10:30 -3684
Patrick 06:55:26 -74.4 Dark Up 81.5 214.8 Up 06:40:26 - 07:10:26 -3689
CPSLO 06:55:52 -70.4 Dark Up 82.9 171.5 Up 06:40:52 - 07:10:52 -3695
Kingman/Dolan Springs 06:55:27 -74.4 Dark Up 81.8 214.7 Up 06:40:27 - 07:10:27 -3713
Laughlin/Bullhead City 06:55:29 -74.2 Dark Up 82.0 212.0 Up 06:40:29 - 07:10:29 -3717
DCO 06:55:24 -75.0 Dark Up 81.4 219.5 Up 06:40:24 - 07:10:24 -3721
Mohave Valley 06:55:29 -74.4 Dark Up 82.2 213.1 Up 06:40:29 - 07:10:29 -3747
Lake Havasu City 06:55:28 -74.8 Dark Up 82.5 216.2 Up 06:40:28 - 07:10:28 -3790
Parker 06:55:28 -75.1 Dark Up 82.7 218.0 Up 06:40:28 - 07:10:28 -3829
Wildwood 06:55:44 -72.4 Dark Up 84.2 187.3 Up 06:40:44 - 07:10:44 -3834
Idyllwild 06:55:37 -73.9 Dark Up 84.1 203.8 Up 06:40:37 - 07:10:37 -3876
Blythe 06:55:29 -75.3 Dark Up 83.3 218.9 Up 06:40:29 - 07:10:29 -3888
Calipatria 06:55:32 -75.0 Dark Up 84.1 215.6 Up 06:40:32 - 07:10:32 -3943
Yuma 06:55:29 -75.9 Dark Up 84.0 224.2 Up 06:40:29 - 07:10:29 -3990

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, (2021/01/01 06:56UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.36  57
Alnath         05:26:17.5 +28:36:23  1.6  3.59  44
PPM 094619     05:39:18.3 +29:12:54  5.9  1.16  41
PPM 094678     05:41:38.6 +28:27:23  8.5  0.26  40
PPM 094701     05:42:03.9 +28:14:27  9.7  0.13  40
98UR43         05:42:34.9 +28:17:58 15.5        40
Positions are for J2000

Event circumstances last updated at 2019/01/29 03:57:06 UT

Marc W. Buie, Southwest Research Institute

RECON