RECON: TNO occultation with 13RD124

Event between 13RD124 and star GA0920:17949596 with event index number of 2070716

Geocentric closest approach at 2023/11/28 04:51:20 UTC

J2000 position of star is 22:03:28.4 +03:09:54
Equinox of date position of star is 22:04:40.8 +03:16:52
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 100 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 40.5 AU from the Sun and 40.5 AU from the Earth.
Apparent velocity is 9.7 km/sec on the sky relative to the star, or, 1.2 arcsec/hr.
The 1-sigma error in the time of the event is 282 seconds.
The 1-sigma cross-track error in the shadow position is 2345 km.
The sky-plane scale is 29401.8 km/arcsec.

The object has an absolute magnitude Hv=6.7
Diameter=271.7 km assuming a 5% albedo -- 27.8 sec chord
Diameter=110.9 km assuming a 30% albedo -- 11.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 13RD124, (2023/11/28 04:48UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:57.9 -29:29:42  1.2 35.26 103
Markab         23:05:57.2 +15:20:04  2.5 19.31  81
26The Peg      22:11:24.3 +06:18:59  3.5  3.47  97
PPM 172665     22:07:51.8 +02:33:24  6.6  1.07 100
PPM 172587     22:04:20.4 +03:17:55  9.1  0.09 100
13RD124        22:04:41.1 +03:16:53 15.1       100
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 3.2 sigma about the mid-time.
The median site spacing is 7.8 km RECON observability=1.0 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:51:44 -51.5 Dark Up 18.8 250.0 Really Low 04:36:44 - 05:06:44 7358
Dunrhomin 04:53:49 -59.1 Dark Up 21.5 255.2 Low 04:38:49 - 05:08:49 7059
Nikitin 04:53:56 -59.2 Dark Up 21.5 255.3 Low 04:38:56 - 05:08:56 7052
CU-SBO 04:53:56 -59.2 Dark Up 21.6 255.2 Low 04:38:56 - 05:08:56 7048
Kelowna 04:51:22 -45.4 Dark Up 27.5 238.6 Low 04:36:22 - 05:06:22 6979
Kamloops 04:51:04 -44.5 Dark Up 27.6 237.4 Low 04:36:04 - 05:06:04 6976
Peachland 04:51:19 -45.3 Dark Up 27.7 238.4 Low 04:36:19 - 05:06:19 6968
Penticton 04:51:24 -45.5 Dark Up 27.7 238.7 Low 04:36:24 - 05:06:24 6968
Summerland 04:51:25 -45.4 Dark Up 27.7 238.6 Low 04:36:25 - 05:06:25 6967
Anarchist Mountain Observatory 04:51:32 -45.9 Dark Up 27.8 239.2 Low 04:36:32 - 05:06:32 6959
Oliver 04:51:26 -45.7 Dark Up 27.9 238.9 Low 04:36:26 - 05:06:26 6958
Okanogan 04:51:33 -46.0 Dark Up 28.3 239.2 Low 04:36:33 - 05:06:33 6933
Brewster 04:51:36 -46.0 Dark Up 28.5 239.2 Low 04:36:36 - 05:06:36 6919
Manson/Chelan 04:51:37 -45.8 Dark Up 28.9 239.0 Low 04:36:37 - 05:06:37 6902
Wenatchee 04:51:38 -45.9 Dark Up 29.2 239.0 Low 04:36:38 - 05:06:38 6882
PNWRO 04:51:57 -47.3 Dark Up 29.0 241.1 Low 04:36:57 - 05:06:57 6880
Ellensburg 04:51:39 -45.9 Dark Up 29.5 239.0 Low 04:36:39 - 05:06:39 6862
Yakima 04:51:50 -46.0 Dark Up 29.7 239.3 Low 04:36:50 - 05:06:50 6848
Toppenish/White Swan 04:51:46 -46.2 Dark Up 29.8 239.5 Low 04:36:46 - 05:06:46 6846
Victoria 04:51:13 -43.5 Dark Up 30.4 235.5 Up 04:36:13 - 05:06:13 6822
The Dalles 04:51:53 -46.0 Dark Up 30.6 239.2 Up 04:36:53 - 05:06:53 6794
Maupin 04:51:56 -46.2 Dark Up 30.8 239.5 Up 04:36:56 - 05:06:56 6783
Sisters 04:52:01 -46.1 Dark Up 31.5 239.5 Up 04:37:01 - 05:07:01 6736
Bend 04:52:07 -46.4 Dark Up 31.4 239.9 Up 04:37:07 - 05:07:07 6735
Oregon Observatory 04:52:08 -46.3 Dark Up 31.6 239.9 Up 04:37:08 - 05:07:08 6724
Cedarville 04:52:35 -47.9 Dark Up 31.8 242.4 Up 04:37:35 - 05:07:35 6674
Chiloquin 04:52:18 -46.4 Dark Up 32.5 240.3 Up 04:37:18 - 05:07:18 6659
Klamath Falls 04:52:23 -46.6 Dark Up 32.6 240.5 Up 04:37:23 - 05:07:23 6648
Fall River/Burney 04:52:39 -47.2 Dark Up 32.9 241.6 Up 04:37:39 - 05:07:39 6612
Patrick 04:54:04 -54.5 Dark Up 29.4 251.1 Low 04:39:04 - 05:09:04 6609
Beatty 04:52:42 -51.6 Dark Up 31.4 247.9 Up 04:37:42 - 05:07:42 6606
Yerington 04:52:42 -49.3 Dark Up 32.3 244.7 Up 04:37:42 - 05:07:42 6603
Reno 04:52:42 -48.7 Dark Up 32.5 243.9 Up 04:37:42 - 05:07:42 6603
Hawthorne 04:52:43 -49.8 Dark Up 32.1 245.4 Up 04:37:43 - 05:07:43 6603
Portola 04:52:42 -48.2 Dark Up 32.8 243.1 Up 04:37:42 - 05:07:42 6591
Gimple 04:52:43 -47.8 Dark Up 32.9 242.6 Up 04:37:43 - 05:07:43 6591
George/Scottsdale 04:54:33 -56.6 Dark Up 28.3 253.5 Low 04:39:33 - 05:09:33 6589
Carson City 04:52:42 -48.8 Dark Up 32.6 244.1 Up 04:37:42 - 05:07:42 6589
Greenville 04:52:43 -47.7 Dark Up 33.0 242.5 Up 04:37:43 - 05:07:43 6588
Gardnerville 04:52:43 -48.9 Dark Up 32.7 244.3 Up 04:37:43 - 05:07:43 6580
Quincy 04:52:43 -47.8 Dark Up 33.1 242.7 Up 04:37:43 - 05:07:43 6580
Laughlin/Bullhead City 04:54:03 -54.0 Dark Up 30.1 250.7 Up 04:39:03 - 05:09:03 6574
Bishop 04:52:42 -50.3 Dark Up 32.4 246.3 Up 04:37:42 - 05:07:42 6564
Lee Vining 04:52:42 -49.6 Dark Up 32.7 245.4 Up 04:37:42 - 05:07:42 6562
Lake Havasu City 04:54:11 -54.4 Dark Up 30.1 251.3 Up 04:39:11 - 05:09:11 6549
Yuma 04:54:28 -54.5 Dark Up 30.8 252.2 Up 04:39:28 - 05:09:28 6447
Calipatria 04:54:19 -53.7 Dark Up 31.4 251.3 Up 04:39:19 - 05:09:19 6439
Idyllwild 04:54:12 -52.6 Dark Up 32.2 250.0 Up 04:39:12 - 05:09:12 6431
Wildwood 04:53:55 -50.9 Dark Up 33.6 248.3 Up 04:38:55 - 05:08:55 6382

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 13RD124, (2023/11/28 04:48UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 35.26 103
Markab         23:04:45.8 +15:12:18  2.5 19.31  81
26The Peg      22:10:12.4 +06:11:53  3.5  3.47  97
PPM 172665     22:06:38.9 +02:26:22  6.6  1.07 100
PPM 172587     22:03:07.7 +03:10:56  9.1  0.09 100
13RD124        22:03:28.4 +03:09:54 15.1       100
Positions are for J2000

Event circumstances last updated at 2023/10/27 01:52:15 UT

Marc W. Buie, Southwest Research Institute

RECON