RECON: TNO occultation with 555915

Event between (555915) 14GX53 and star GA0780:05250648 with event index number of 2747400

Geocentric closest approach at 2029/04/22 07:51:54 UTC

J2000 position of star is 16:06:45.1 -11:51:26
Equinox of date position of star is 16:08:06.5 -11:55:17
Stellar brightness G=11.9, use SENSEUP=8 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 113 degrees from the moon. Moon is 56% illuminated.
Apparent brightness V=20.9

[RECON map]
Object is 35.2 AU from the Sun and 34.3 AU from the Earth.
Apparent velocity is 20.2 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 96 seconds.
The 1-sigma cross-track error in the shadow position is 1536 km.
The sky-plane scale is 24882.4 km/arcsec.

The object has an absolute magnitude Hv=5.4
Diameter=498.9 km assuming a 5% albedo -- 25.1 sec chord
Diameter=203.7 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 555915, (2029/04/22 07:53UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:12.6 -26:29:40  0.9 15.52 121
13Zet Oph      16:38:46.5 -10:37:27  2.6  7.57 120
11 Sco         16:09:14.3 -12:49:19  6.1  0.91 114
PPM 231209     16:08:13.0 -11:58:58  7.9  0.06 113
555915         16:08:22.5 -11:56:03 11.9       114
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 18.2 km RECON observability=1.0 and success probability=27.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:54:04 -24.6 Dark Up 24.1 160.2 Low 07:45:32 - 08:02:36 -627
Kamloops 07:54:48 -27.0 Dark Up 21.3 145.4 Low 07:46:16 - 08:03:20 -1020
Kelowna 07:54:46 -27.8 Dark Up 22.3 146.1 Low 07:46:14 - 08:03:18 -1052
Peachland 07:54:48 -27.9 Dark Up 22.3 145.8 Low 07:46:16 - 08:03:20 -1066
Summerland 07:54:48 -28.1 Dark Up 22.4 145.9 Low 07:46:16 - 08:03:20 -1073
Penticton 07:54:47 -28.1 Dark Up 22.5 146.0 Low 07:46:15 - 08:03:19 -1075
Oliver 07:54:48 -28.5 Dark Up 22.8 145.9 Low 07:46:16 - 08:03:20 -1098
Anarchist Mountain Observatory 07:54:48 -28.7 Dark Up 23.0 146.0 Low 07:46:16 - 08:03:20 -1104
Okanogan 07:54:49 -29.3 Dark Up 23.5 145.7 Low 07:46:17 - 08:03:21 -1153
Brewster 07:54:50 -29.6 Dark Up 23.6 145.4 Low 07:46:18 - 08:03:22 -1176
Manson/Chelan 07:54:52 -29.8 Dark Up 23.7 145.0 Low 07:46:20 - 08:03:24 -1199
Victoria 07:55:00 -29.0 Dark Up 21.9 142.0 Low 07:46:28 - 08:03:32 -1231
Wenatchee 07:54:52 -30.2 Dark Up 24.0 144.7 Low 07:46:20 - 08:03:24 -1235
Ellensburg 07:54:54 -30.7 Dark Up 24.2 144.4 Low 07:46:22 - 08:03:26 -1268
Yakima 07:54:54 -31.1 Dark Up 24.6 144.3 Low 07:46:22 - 08:03:26 -1297
PNWRO 07:54:50 -31.7 Dark Up 25.7 145.8 Low 07:46:18 - 08:03:22 -1298
Toppenish/White Swan 07:54:54 -31.3 Dark Up 24.8 144.4 Low 07:46:22 - 08:03:26 -1308
Dunrhomin 07:54:08 -35.9 Dark Up 35.4 158.7 Up 07:45:36 - 08:02:40 -1365
Nikitin 07:54:08 -36.1 Dark Up 35.5 158.6 Up 07:45:36 - 08:02:40 -1379
The Dalles 07:54:57 -32.0 Dark Up 25.1 143.4 Low 07:46:25 - 08:03:29 -1383
CU-SBO 07:54:08 -36.2 Dark Up 35.6 158.5 Up 07:45:36 - 08:02:40 -1386
Maupin 07:54:58 -32.5 Dark Up 25.5 143.4 Low 07:46:26 - 08:03:30 -1410
Sisters 07:55:01 -33.3 Dark Up 26.0 142.7 Low 07:46:29 - 08:03:33 -1486
Bend 07:55:00 -33.6 Dark Up 26.3 142.8 Low 07:46:28 - 08:03:32 -1496
Oregon Observatory 07:55:01 -33.7 Dark Up 26.4 142.7 Low 07:46:29 - 08:03:33 -1512
Chiloquin 07:55:04 -35.0 Dark Up 27.2 141.9 Low 07:46:32 - 08:03:36 -1621
Klamath Falls 07:55:04 -35.4 Dark Up 27.5 141.8 Low 07:46:32 - 08:03:36 -1645
Cedarville 07:54:59 -36.1 Dark Up 28.8 143.2 Low 07:46:27 - 08:03:31 -1656
Fall River/Burney 07:55:04 -36.6 Dark Up 28.6 141.8 Low 07:46:32 - 08:03:36 -1726
Gimple 07:55:03 -37.5 Dark Up 29.6 142.0 Low 07:46:31 - 08:03:35 -1782
Greenville 07:55:04 -37.5 Dark Up 29.6 142.0 Low 07:46:32 - 08:03:36 -1784
Portola 07:55:02 -37.8 Dark Up 30.1 142.3 Up 07:46:30 - 08:03:34 -1797
Quincy 07:55:04 -37.7 Dark Up 29.7 141.9 Low 07:46:32 - 08:03:36 -1800
Reno 07:55:00 -38.1 Dark Up 30.6 142.9 Up 07:46:28 - 08:03:32 -1800
Yerington 07:54:59 -38.7 Dark Up 31.3 143.3 Up 07:46:27 - 08:03:31 -1826
Carson City 07:55:00 -38.5 Dark Up 30.9 142.7 Up 07:46:28 - 08:03:32 -1828
Gardnerville 07:55:01 -38.7 Dark Up 31.1 142.7 Up 07:46:29 - 08:03:33 -1846
Hawthorne 07:54:58 -39.1 Dark Up 31.9 143.7 Up 07:46:26 - 08:03:30 -1849
Lee Vining 07:54:59 -39.7 Dark Up 32.2 143.0 Up 07:46:27 - 08:03:31 -1907
Beatty 07:54:52 -40.7 Dark Up 34.1 145.0 Up 07:46:20 - 08:03:24 -1927
Bishop 07:54:57 -40.3 Dark Up 33.0 143.5 Up 07:46:25 - 08:03:29 -1935
Patrick 07:54:42 -42.0 Dark Up 36.6 147.4 Up 07:46:10 - 08:03:14 -1968
Laughlin/Bullhead City 07:54:45 -42.3 Dark Up 36.5 146.6 Up 07:46:13 - 08:03:17 -2008
George/Scottsdale 07:54:35 -43.4 Dark Up 38.9 148.9 Up 07:46:03 - 08:03:07 -2050
Lake Havasu City 07:54:44 -43.0 Dark Up 37.2 146.6 Up 07:46:12 - 08:03:16 -2056
Idyllwild 07:54:54 -43.9 Dark Up 36.7 143.7 Up 07:46:22 - 08:03:26 -2187
Calipatria 07:54:50 -44.4 Dark Up 37.8 144.7 Up 07:46:18 - 08:03:22 -2205
Wildwood 07:55:01 -43.6 Dark Up 35.5 141.9 Up 07:46:29 - 08:03:33 -2211
Yuma 07:54:46 -44.8 Dark Up 38.5 145.4 Up 07:46:14 - 08:03:18 -2215

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 555915, (2029/04/22 07:53UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.52 121
13Zet Oph      16:37:09.6 -10:34:01  2.6  7.57 120
11 Sco         16:07:36.3 -12:44:44  6.1  0.91 114
PPM 231209     16:06:35.5 -11:54:21  7.9  0.06 113
555915         16:06:45.1 -11:51:26 11.9       113
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:34:44 UT

Marc W. Buie, Southwest Research Institute

RECON