RECON: TNO occultation with 119951

Event between (119951) 02KX14 and star GA0660:14466335 with event index number of 1095038

Geocentric closest approach at 2021/04/23 08:36:54 UTC

J2000 position of star is 17:33:23.6 -23:27:56
Equinox of date position of star is 17:34:40.5 -23:28:44
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 103 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=20.7

[RECON map]
TNO is 38.9 AU from the Sun and 38.3 AU from the Earth.
The TNO is moving 13.6 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 169 seconds.
The 1-sigma cross-track error in the shadow position is 1435 km.
The sky-plane scale is 27779.8 km/arcsec.

The TNO has an absolute magnitude Hv=4.7
Diameter=691.9 km assuming a 5% albedo -- 50.9 sec chord
Diameter=282.4 km assuming a 30% albedo -- 20.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 119951, (2021/04/23 08:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.0 -26:28:39  0.9 14.79  89
35Eta Oph      17:11:36.1 -15:44:59  2.6  9.45  96
51 Oph         17:32:43.1 -23:58:38  4.8  0.67 102
PPM 266956     17:32:30.9 -23:40:24  8.0  0.54 102
PPM 266986     17:34:11.7 -23:24:17  9.3  0.14 103
119951         17:34:41.4 -23:28:45 16.9       103
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 5.0 sigma about the mid-time.
The median site spacing is 17.0 km RECON observability=0.2 and success probability=0.0%
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 08:40:23 -26.3 Dark Up 7.9 142.6 Really Low 08:25:51 - 08:54:56 11434
Kelowna 08:40:26 -26.7 Dark Up 8.1 142.5 Really Low 08:25:53 - 08:54:58 11415
Peachland 08:40:27 -26.9 Dark Up 8.1 142.2 Really Low 08:25:54 - 08:54:59 11404
Summerland 08:40:27 -27.0 Dark Up 8.2 142.3 Really Low 08:25:55 - 08:55:00 11399
Penticton 08:40:27 -27.1 Dark Up 8.3 142.4 Really Low 08:25:54 - 08:54:59 11399
Oliver 08:40:30 -27.4 Dark Up 8.6 142.4 Really Low 08:25:57 - 08:55:02 11383
Anarchist Mountain Observatory 08:40:29 -27.5 Dark Up 8.8 142.5 Really Low 08:25:57 - 08:55:02 11381
Tonasket 08:40:30 -27.9 Dark Up 9.1 142.4 Really Low 08:25:58 - 08:55:03 11365
Okanogan 08:40:32 -28.2 Dark Up 9.3 142.3 Really Low 08:25:59 - 08:55:04 11347
Brewster 08:40:35 -28.5 Dark Up 9.4 142.1 Really Low 08:26:02 - 08:55:07 11330
Manson/Chelan 08:40:35 -28.8 Dark Up 9.4 141.8 Really Low 08:26:03 - 08:55:08 11313
Wenatchee 08:40:37 -29.2 Dark Up 9.7 141.6 Really Low 08:26:05 - 08:55:10 11287
Victoria 08:40:46 -28.5 Dark Up 7.6 139.2 Really Low 08:26:13 - 08:55:18 11269
Ellensburg 08:40:42 -29.7 Dark Up 10.0 141.4 Really Low 08:26:09 - 08:55:14 11263
Pasco 08:40:38 -30.2 Dark Up 11.1 142.4 Really Low 08:26:05 - 08:55:10 11259
PNWRO 08:40:38 -30.4 Dark Up 11.4 142.6 Really Low 08:26:06 - 08:55:11 11252
Yakima 08:40:43 -30.1 Dark Up 10.3 141.3 Really Low 08:26:10 - 08:55:15 11243
Dunrhomin 08:39:50 -32.1 Dark Up 21.5 153.5 Low 08:25:17 - 08:54:22 11240
Toppenish/White Swan 08:40:44 -30.3 Dark Up 10.5 141.4 Really Low 08:26:11 - 08:55:16 11236
Goldendale 08:40:46 -30.9 Dark Up 10.8 141.0 Really Low 08:26:13 - 08:55:18 11200
The Dalles 08:40:48 -31.1 Dark Up 10.8 140.7 Really Low 08:26:16 - 08:55:21 11179
Maupin 08:40:50 -31.5 Dark Up 11.2 140.7 Really Low 08:26:17 - 08:55:22 11161
Redmond 08:40:54 -32.4 Dark Up 11.8 140.6 Really Low 08:26:21 - 08:55:26 11113
Sisters 08:40:56 -32.5 Dark Up 11.6 140.2 Really Low 08:26:23 - 08:55:28 11105
Bend 08:40:55 -32.7 Dark Up 11.9 140.4 Really Low 08:26:22 - 08:55:27 11098
Oregon Observatory 08:40:57 -32.8 Dark Up 12.0 140.3 Really Low 08:26:24 - 08:55:29 11086
La Pine/Gilchrist 08:40:57 -33.0 Dark Up 12.1 140.2 Really Low 08:26:25 - 08:55:30 11074
North Lake 08:40:56 -33.4 Dark Up 12.7 140.6 Really Low 08:26:24 - 08:55:29 11065
Paisley 08:40:57 -33.9 Dark Up 13.3 140.9 Really Low 08:26:24 - 08:55:29 11044
Lakeview 08:40:58 -34.3 Dark Up 13.8 140.9 Really Low 08:26:25 - 08:55:30 11021
Cedarville 08:40:58 -35.0 Dark Up 14.4 141.0 Really Low 08:26:26 - 08:55:31 10989
Klamath Falls 08:41:03 -34.5 Dark Up 13.1 139.8 Really Low 08:26:31 - 08:55:36 10988
Fall River/Burney 08:41:05 -35.6 Dark Up 14.2 139.9 Really Low 08:26:33 - 08:55:38 10931
Susanville 08:41:04 -36.1 Dark Up 15.1 140.4 Really Low 08:26:32 - 08:55:37 10913
Gimple 08:41:06 -36.4 Dark Up 15.2 140.2 Really Low 08:26:34 - 08:55:39 10892
Greenville 08:41:06 -36.4 Dark Up 15.1 140.1 Really Low 08:26:34 - 08:55:39 10890
Reno 08:41:04 -36.8 Dark Up 16.1 140.9 Really Low 08:26:31 - 08:55:36 10883
Portola 08:41:05 -36.7 Dark Up 15.6 140.5 Really Low 08:26:33 - 08:55:38 10883
Quincy 08:41:08 -36.6 Dark Up 15.3 140.1 Really Low 08:26:35 - 08:55:40 10878
Yerington 08:41:03 -37.2 Dark Up 16.9 141.4 Really Low 08:26:30 - 08:55:35 10867
Carson City 08:41:05 -37.2 Dark Up 16.4 140.9 Really Low 08:26:32 - 08:55:37 10863
Tonopah 08:40:58 -37.7 Dark Up 18.6 142.8 Really Low 08:26:25 - 08:55:30 10859
Hawthorne 08:41:01 -37.6 Dark Up 17.5 141.7 Really Low 08:26:29 - 08:55:34 10852
Gardnerville 08:41:06 -37.4 Dark Up 16.6 140.9 Really Low 08:26:33 - 08:55:38 10849
Lee Vining 08:41:07 -38.2 Dark Up 17.7 141.2 Really Low 08:26:34 - 08:55:39 10806
Indian Springs 08:40:53 -38.8 Dark Up 20.5 143.7 Low 08:26:20 - 08:55:25 10805
Beatty 08:40:58 -38.7 Dark Up 19.7 142.9 Really Low 08:26:25 - 08:55:30 10799
Henderson 08:40:50 -39.1 Dark Up 21.2 144.2 Low 08:26:17 - 08:55:22 10788
Bishop 08:41:04 -38.7 Dark Up 18.5 141.7 Really Low 08:26:32 - 08:55:37 10787
Patrick 08:40:46 -39.4 Dark Up 22.3 145.0 Low 08:26:14 - 08:55:19 10775
Kingman/Dolan Springs 08:40:48 -39.6 Dark Up 22.3 144.8 Low 08:26:16 - 08:55:21 10756
Laughlin/Bullhead City 08:40:51 -39.8 Dark Up 22.1 144.3 Low 08:26:19 - 08:55:24 10742
Mohave Valley 08:40:52 -40.1 Dark Up 22.3 144.3 Low 08:26:19 - 08:55:24 10724
George/Scottsdale 08:40:40 -40.3 Dark Up 24.6 146.3 Low 08:26:07 - 08:55:12 10713
Lake Havasu City 08:40:52 -40.4 Dark Up 22.8 144.4 Low 08:26:19 - 08:55:24 10705
Parker 08:40:51 -40.7 Dark Up 23.1 144.3 Low 08:26:18 - 08:55:23 10682
Blythe 08:40:55 -41.3 Dark Up 23.4 143.9 Low 08:26:22 - 08:55:27 10641
Idyllwild 08:41:06 -41.7 Dark Up 22.2 142.2 Low 08:26:33 - 08:55:38 10597
CPSLO 08:41:20 -41.1 Dark Up 19.0 139.5 Really Low 08:26:48 - 08:55:53 10596
Calipatria 08:41:01 -42.0 Dark Up 23.3 143.0 Low 08:26:29 - 08:55:34 10584
Yuma 08:40:57 -42.1 Dark Up 24.1 143.7 Low 08:26:25 - 08:55:30 10578
Wildwood 08:41:14 -41.8 Dark Up 21.0 140.8 Low 08:26:42 - 08:55:47 10571

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 119951, (2021/04/23 08:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.79  89
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.45  96
51 Oph         17:31:25.0 -23:57:46  4.8  0.67 102
PPM 266956     17:31:13.0 -23:39:32  8.0  0.54 102
PPM 266986     17:32:53.9 -23:23:28  9.3  0.14 103
119951         17:33:23.6 -23:27:56 16.9       103
Positions are for J2000

Event circumstances last updated at 2021/01/20 20:50:01 UT

Marc W. Buie, Southwest Research Institute

RECON