RECON: TNO occultation with 05LB54

Event between 05LB54 and star GA0660:21680298 with event index number of 1943123

Geocentric closest approach at 2024/07/09 05:11:21 UTC

J2000 position of star is 17:54:16.6 -23:03:38
Equinox of date position of star is 17:55:43.5 -23:03:48
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 123 degrees from the moon. Moon is 11% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 41.6 AU from the Sun and 40.7 AU from the Earth.
Apparent velocity is 23.1 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 774 seconds.
The 1-sigma cross-track error in the shadow position is 3600 km.
The sky-plane scale is 29496.8 km/arcsec.

The object has an absolute magnitude Hv=5.7
Diameter=440.6 km assuming a 5% albedo -- 19.1 sec chord
Diameter=179.9 km assuming a 30% albedo -- 7.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 05LB54, (2024/07/09 05:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.9 -26:29:03  0.9 19.54 104
35Eta Oph      17:11:47.2 -15:45:13  2.6 12.68 112
PPM 267552     17:58:37.4 -23:56:26  6.5  1.09 124
PPM 267462     17:54:42.8 -22:32:25  8.3  0.58 123
PPM 267500     17:56:29.5 -22:59:02  8.7  0.19 123
05LB54         17:55:45.9 -23:03:48 16.6       123
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 1.2 sigma about the mid-time.
The median site spacing is 15.6 km RECON observability=0.5 and success probability=4.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:11:46 -11.3 NT Up 14.5 171.5 Really Low 04:56:46 - 05:26:46 -1162
Kamloops 05:12:29 -7.6 NT Up 13.5 158.1 Really Low 04:57:29 - 05:27:29 -1311
Kelowna 05:12:28 -8.5 NT Up 14.4 158.9 Really Low 04:57:28 - 05:27:28 -1330
Peachland 05:12:29 -8.5 NT Up 14.5 158.6 Really Low 04:57:29 - 05:27:29 -1336
Summerland 05:12:29 -8.7 NT Up 14.6 158.7 Really Low 04:57:29 - 05:27:29 -1341
Penticton 05:12:29 -8.8 NT Up 14.7 158.8 Really Low 04:57:29 - 05:27:29 -1342
Oliver 05:12:29 -9.0 NT Up 15.1 158.7 Really Low 04:57:29 - 05:27:29 -1355
Anarchist Mountain Observatory 05:12:29 -9.2 NT Up 15.3 158.9 Really Low 04:57:29 - 05:27:29 -1358
Okanogan 05:12:30 -9.6 NT Up 15.8 158.6 Really Low 04:57:30 - 05:27:30 -1385
Brewster 05:12:30 -9.8 NT Up 16.0 158.4 Really Low 04:57:30 - 05:27:30 -1398
Manson/Chelan 05:12:30 -9.8 NT Up 16.1 158.1 Really Low 04:57:30 - 05:27:30 -1411
Victoria 05:12:41 -7.9 NT Up 14.7 155.2 Really Low 04:57:41 - 05:27:41 -1424
Wenatchee 05:12:30 -10.1 NT Up 16.5 157.9 Really Low 04:57:30 - 05:27:30 -1434
Ellensburg 05:12:30 -10.3 NT Up 16.8 157.6 Really Low 04:57:30 - 05:27:30 -1455
PNWRO 05:12:30 -11.8 NT Up 18.2 159.0 Really Low 04:57:30 - 05:27:30 -1472
Yakima 05:12:30 -10.6 NT Up 17.2 157.5 Really Low 04:57:30 - 05:27:30 -1473
Toppenish/White Swan 05:12:30 -10.8 NT Up 17.5 157.7 Really Low 04:57:30 - 05:27:30 -1479
The Dalles 05:12:39 -11.1 NT Up 18.0 156.9 Really Low 04:57:39 - 05:27:39 -1515
Maupin 05:12:39 -11.4 NT Up 18.4 156.9 Really Low 04:57:39 - 05:27:39 -1532
Sisters 05:12:42 -11.9 NT Up 19.1 156.4 Really Low 04:57:42 - 05:27:42 -1576
Bend 05:12:42 -12.2 AT Up 19.3 156.6 Really Low 04:57:42 - 05:27:42 -1584
Oregon Observatory 05:12:42 -12.2 AT Up 19.5 156.4 Really Low 04:57:42 - 05:27:42 -1593
Dunrhomin 05:11:50 -22.0 Dark Down 26.2 171.7 Low 04:56:50 - 05:26:50 -1627
Nikitin 05:11:51 -22.2 Dark Down 26.4 171.6 Low 04:56:51 - 05:26:51 -1637
CU-SBO 05:11:51 -22.2 Dark Down 26.5 171.5 Low 04:56:51 - 05:26:51 -1640
Chiloquin 05:12:45 -13.0 AT Up 20.6 155.9 Low 04:57:45 - 05:27:45 -1661
Klamath Falls 05:12:46 -13.3 AT Up 20.9 155.9 Low 04:57:46 - 05:27:46 -1676
Cedarville 05:12:41 -14.6 AT Up 22.0 157.3 Low 04:57:41 - 05:27:41 -1690
Fall River/Burney 05:12:46 -14.4 AT Up 22.1 156.0 Low 04:57:46 - 05:27:46 -1730
Gimple 05:12:45 -15.3 AT Up 23.1 156.4 Low 04:57:45 - 05:27:45 -1770
Greenville 05:12:45 -15.3 AT Up 23.1 156.3 Low 04:57:45 - 05:27:45 -1771
Quincy 05:12:46 -15.4 AT Up 23.2 156.3 Low 04:57:46 - 05:27:46 -1782
Portola 05:12:45 -15.8 AT Up 23.5 156.7 Low 04:57:45 - 05:27:45 -1782
Reno 05:12:43 -16.3 AT Up 23.9 157.3 Low 04:57:43 - 05:27:43 -1788
Carson City 05:12:43 -16.6 AT Up 24.3 157.2 Low 04:57:43 - 05:27:43 -1807
Yerington 05:12:41 -17.0 AT Up 24.6 157.8 Low 04:57:41 - 05:27:41 -1809
Gardnerville 05:12:43 -16.8 AT Up 24.5 157.2 Low 04:57:43 - 05:27:43 -1819
Hawthorne 05:12:40 -17.7 AT Up 25.2 158.2 Low 04:57:40 - 05:27:40 -1828
Lee Vining 05:12:42 -17.8 AT Up 25.6 157.7 Low 04:57:42 - 05:27:42 -1865
Bishop 05:12:40 -18.7 Dark Up 26.4 158.2 Low 04:57:40 - 05:27:40 -1890
Beatty 05:12:30 -19.8 Dark Up 27.3 159.7 Low 04:57:30 - 05:27:30 -1901
Patrick 05:12:25 -22.4 Dark Down 29.4 162.3 Low 04:57:25 - 05:27:25 -1953
Laughlin/Bullhead City 05:12:28 -22.3 Dark Down 29.5 161.6 Low 04:57:28 - 05:27:28 -1975
Lake Havasu City 05:12:28 -23.0 Dark Down 30.2 161.7 Up 04:57:28 - 05:27:28 -2013
George/Scottsdale 05:12:19 -24.8 Dark Down 31.5 164.1 Up 04:57:19 - 05:27:19 -2037
Wildwood 05:12:44 -21.0 Dark Up 29.3 157.4 Low 04:57:44 - 05:27:44 -2086
Idyllwild 05:12:30 -22.3 Dark Up 30.2 159.2 Up 04:57:30 - 05:27:30 -2093
Calipatria 05:12:30 -23.4 Dark Down 31.2 160.2 Up 04:57:30 - 05:27:30 -2113
Yuma 05:12:30 -24.2 Dark Down 31.8 161.1 Up 04:57:30 - 05:27:30 -2128

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, (2024/07/09 05:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.54 104
35Eta Oph      17:10:22.7 -15:43:29  2.6 12.68 112
PPM 267552     17:57:07.5 -23:56:22  6.5  1.09 124
PPM 267462     17:53:13.8 -22:32:13  8.3  0.58 123
PPM 267500     17:55:00.2 -22:58:53  8.7  0.19 123
05LB54         17:54:16.6 -23:03:38 16.6       123
Positions are for J2000

Event circumstances last updated at 2023/11/08 05:21:37 UT

Marc W. Buie, Southwest Research Institute

RECON