RECON: TNO occultation with 05LB54

Event between 05LB54 and star GA0660:15140537 with event index number of 1941272

Geocentric closest approach at 2021/07/19 08:00:34 UTC

J2000 position of star is 17:35:18.9 -22:43:50
Equinox of date position of star is 17:36:36.6 -22:44:34
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 32 degrees from the moon. Moon is 71% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 41.6 AU from the Sun and 40.8 AU from the Earth.
The TNO is moving 20.0 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 515 seconds.
The 1-sigma cross-track error in the shadow position is 2134 km.
The sky-plane scale is 29578.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=430.5 km assuming a 5% albedo -- 21.5 sec chord
Diameter=175.8 km assuming a 30% albedo -- 8.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 05LB54, (2021/07/19 08:01UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.9 -26:28:41  0.9 15.42  19
35Eta Oph      17:11:36.9 -15:45:00  2.6  9.15  26
PPM 267109     17:40:02.6 -21:55:25  6.4  1.14  33
PPM 267094     17:39:22.0 -22:35:35  8.4  0.65  33
PPM 267043     17:36:51.1 -22:34:40  9.3  0.17  32
05LB54         17:36:37.2 -22:44:35 17.0        33
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 1.7 sigma about the mid-time.
The median site spacing is 20.2 km RECON observability=0.4 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 07:58:49 -19.0 Dark Up 11.1 211.6 Really Low 07:43:49 - 08:13:49 10802
Victoria 07:58:57 -20.5 Dark Up 13.9 208.2 Really Low 07:43:57 - 08:13:57 10790
Peachland 07:58:49 -19.5 Dark Up 11.7 211.3 Really Low 07:43:49 - 08:13:49 10789
Kelowna 07:58:49 -19.4 Dark Up 11.5 211.5 Really Low 07:43:49 - 08:13:49 10789
Summerland 07:58:49 -19.6 Dark Up 11.8 211.4 Really Low 07:43:49 - 08:13:49 10782
Penticton 07:58:48 -19.7 Dark Up 11.8 211.5 Really Low 07:43:48 - 08:13:48 10778
Oliver 07:58:47 -20.0 Dark Up 12.1 211.5 Really Low 07:43:47 - 08:13:47 10765
Anarchist Mountain Observatory 07:58:46 -20.2 Dark Up 12.2 211.7 Really Low 07:43:46 - 08:13:46 10756
Tonasket 07:58:45 -20.5 Dark Up 12.5 211.7 Really Low 07:43:45 - 08:13:45 10744
Okanogan 07:58:45 -20.8 Dark Up 12.8 211.6 Really Low 07:43:45 - 08:13:45 10733
Brewster 07:58:45 -21.1 Dark Up 13.1 211.4 Really Low 07:43:45 - 08:13:45 10725
Manson/Chelan 07:58:47 -21.3 Dark Up 13.4 211.1 Really Low 07:43:47 - 08:13:47 10722
Wenatchee 07:58:46 -21.8 Dark Up 13.9 211.0 Really Low 07:43:46 - 08:13:46 10704
Ellensburg 07:58:46 -22.2 Dark Up 14.3 210.9 Really Low 07:43:46 - 08:13:46 10690
Yakima 07:58:45 -22.6 Dark Up 14.7 210.9 Really Low 07:43:45 - 08:13:45 10673
Toppenish/White Swan 07:58:44 -22.8 Dark Up 14.8 211.1 Really Low 07:43:44 - 08:13:44 10661
Goldendale 07:58:43 -23.4 Dark Up 15.4 210.8 Really Low 07:43:43 - 08:13:43 10643
The Dalles 07:58:45 -23.6 Dark Up 15.7 210.5 Really Low 07:43:45 - 08:13:45 10638
Pasco 07:58:40 -23.0 Dark Up 14.4 212.2 Really Low 07:43:40 - 08:13:40 10637
PNWRO 07:58:38 -23.2 Dark Up 14.6 212.5 Really Low 07:43:38 - 08:13:38 10623
Maupin 07:58:43 -24.0 Dark Up 16.1 210.7 Really Low 07:43:43 - 08:13:43 10618
Sisters 07:58:43 -24.8 Dark Up 17.0 210.4 Really Low 07:43:43 - 08:13:43 10585
Redmond 07:58:41 -24.9 Dark Up 16.9 210.7 Really Low 07:43:41 - 08:13:41 10578
Bend 07:58:42 -25.1 Dark Up 17.1 210.6 Really Low 07:43:42 - 08:13:42 10570
Oregon Observatory 07:58:42 -25.3 Dark Up 17.3 210.5 Really Low 07:43:42 - 08:13:42 10564
La Pine/Gilchrist 07:58:42 -25.5 Dark Up 17.5 210.5 Really Low 07:43:42 - 08:13:42 10555
North Lake 07:58:39 -25.9 Dark Up 17.7 211.1 Really Low 07:43:39 - 08:13:39 10525
Chiloquin 07:58:41 -26.6 Dark Up 18.6 210.4 Really Low 07:43:41 - 08:13:41 10506
Paisley 07:58:36 -26.5 Dark Up 18.0 211.5 Really Low 07:43:36 - 08:13:36 10493
Klamath Falls 07:58:39 -26.9 Dark Up 18.9 210.5 Really Low 07:43:39 - 08:13:39 10488
Lakeview 07:58:35 -27.0 Dark Up 18.4 211.8 Really Low 07:43:35 - 08:13:35 10464
Cedarville 07:58:33 -27.7 Dark Up 18.8 212.0 Really Low 07:43:33 - 08:13:33 10428
Fall River/Burney 07:58:35 -28.1 Dark Up 19.7 211.0 Really Low 07:43:35 - 08:13:35 10422
Susanville 07:58:32 -28.8 Dark Up 20.0 211.8 Really Low 07:43:32 - 08:13:32 10377
Greenville 07:58:32 -29.0 Dark Up 20.3 211.6 Low 07:43:32 - 08:13:32 10366
Gimple 07:58:33 -29.0 Dark Up 20.3 211.7 Low 07:43:33 - 08:13:33 10365
Quincy 07:58:32 -29.2 Dark Up 20.5 211.6 Low 07:43:32 - 08:13:32 10355
Portola 07:58:30 -29.4 Dark Up 20.4 212.1 Low 07:43:30 - 08:13:30 10341
Reno 07:58:27 -29.7 Dark Up 20.4 212.7 Low 07:43:27 - 08:13:27 10316
Carson City 07:58:27 -30.0 Dark Up 20.7 212.8 Low 07:43:27 - 08:13:27 10296
Gardnerville 07:58:26 -30.3 Dark Up 20.9 212.9 Low 07:43:26 - 08:13:26 10282
Yerington 07:58:25 -30.2 Dark Up 20.6 213.4 Low 07:43:25 - 08:13:25 10274
Hawthorne 07:58:21 -30.7 Dark Up 20.7 213.9 Low 07:43:21 - 08:13:21 10239
Lee Vining 07:58:22 -31.2 Dark Up 21.4 213.6 Low 07:43:22 - 08:13:22 10216
Tonopah 07:58:16 -31.2 Dark Up 20.5 215.2 Low 07:43:16 - 08:13:16 10188
Bishop 07:58:19 -31.9 Dark Up 21.6 214.4 Low 07:43:19 - 08:13:19 10168
Beatty 07:58:12 -32.3 Dark Up 21.2 215.9 Low 07:43:12 - 08:13:12 10110
CPSLO 07:58:23 -33.9 Dark Up 24.3 212.9 Low 07:43:23 - 08:13:23 10081
Indian Springs 07:58:07 -32.6 Dark Up 21.0 216.8 Low 07:43:07 - 08:13:07 10070
Dunrhomin 07:57:42 -27.8 Dark Down 12.9 224.5 Really Low 07:42:42 - 08:12:42 10068
Henderson 07:58:04 -33.1 Dark Up 21.1 217.5 Low 07:43:04 - 08:13:04 10024
Wildwood 07:58:12 -35.1 Dark Up 24.4 215.0 Low 07:43:12 - 08:13:12 9970
Patrick 07:57:59 -33.7 Dark Up 21.0 218.6 Low 07:42:59 - 08:12:59 9962
Laughlin/Bullhead City 07:58:01 -34.0 Dark Up 21.6 218.1 Low 07:43:01 - 08:13:01 9961
Kingman/Dolan Springs 07:57:59 -33.9 Dark Up 21.3 218.5 Low 07:42:59 - 08:12:59 9952
Mohave Valley 07:58:00 -34.2 Dark Up 21.8 218.1 Low 07:43:00 - 08:13:00 9943
Lake Havasu City 07:57:58 -34.6 Dark Up 22.0 218.4 Low 07:42:58 - 08:12:58 9913
Idyllwild 07:58:05 -35.5 Dark Up 23.8 216.7 Low 07:43:05 - 08:13:05 9912
Parker 07:57:58 -35.0 Dark Up 22.3 218.6 Low 07:42:58 - 08:12:58 9889
Blythe 07:57:58 -35.5 Dark Up 22.8 218.4 Low 07:42:58 - 08:12:58 9861
Calipatria 07:58:00 -36.0 Dark Up 23.7 217.8 Low 07:43:00 - 08:13:00 9847
George/Scottsdale 07:57:48 -35.2 Dark Up 21.3 220.6 Low 07:42:48 - 08:12:48 9811
Yuma 07:57:56 -36.4 Dark Up 23.6 218.7 Low 07:42:56 - 08:12:56 9801

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 05LB54, (2021/07/19 08:01UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.42  19
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.15  26
PPM 267109     17:38:44.8 -21:54:46  6.4  1.14  33
PPM 267094     17:38:03.8 -22:34:55  8.4  0.65  33
PPM 267043     17:35:32.9 -22:33:55  9.3  0.17  32
05LB54         17:35:18.9 -22:43:50 17.0        32
Positions are for J2000

Event circumstances last updated at 2021/05/18 00:33:49 UT

Marc W. Buie, Southwest Research Institute

RECON