RECON: TNO occultation with 05VA123

Event between 05VA123 and star GA1140:02080580 with event index number of 1988022

Geocentric closest approach at 2024/01/20 08:08:21 UTC

J2000 position of star is 06:17:48.2 +24:38:44
Equinox of date position of star is 06:19:16.1 +24:38:06
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 37 degrees from the moon. Moon is 73% illuminated.
Apparent brightness V=23.0

[RECON map]
Object is 38.3 AU from the Sun and 37.4 AU from the Earth.
Apparent velocity is 22.6 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 267 seconds.
The 1-sigma cross-track error in the shadow position is 1517 km.
The sky-plane scale is 27121.9 km/arcsec.

The object has an absolute magnitude Hv=7.1
Diameter=226.0 km assuming a 5% albedo -- 10.0 sec chord
Diameter=92.2 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05VA123, (2024/01/20 08:08UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.5 +07:24:34  0.4 18.07  37
Alhena         06:39:06.1 +16:22:36  1.9  9.47  43
9 Gem          06:18:26.8 +23:43:50  6.1  0.92  37
PPM 095790     06:21:33.5 +24:33:17  8.5  0.52  38
PPM 095716     06:19:03.3 +24:31:48 10.1  0.12  37
05VA123        06:19:16.9 +24:38:05 16.3        38
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 3.4 sigma about the mid-time.
The median site spacing is 33.8 km RECON observability=1.0 and success probability=32.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:06:33 -56.5 Dark Up 48.9 243.9 Up 07:51:33 - 08:21:33 -433
Kamloops 08:07:06 -59.5 Dark Up 57.1 227.6 Up 07:52:06 - 08:22:06 -808
Kelowna 08:07:02 -60.3 Dark Up 57.2 229.8 Up 07:52:02 - 08:22:02 -873
Peachland 08:07:03 -60.4 Dark Up 57.4 229.5 Up 07:52:03 - 08:22:03 -888
Summerland 08:07:02 -60.6 Dark Up 57.5 229.8 Up 07:52:02 - 08:22:02 -901
Penticton 08:07:02 -60.7 Dark Up 57.5 230.0 Up 07:52:02 - 08:22:02 -906
Oliver 08:07:01 -61.0 Dark Up 57.7 230.4 Up 07:52:01 - 08:22:01 -940
Anarchist Mountain Observatory 08:07:01 -61.2 Dark Up 57.7 230.9 Up 07:52:01 - 08:22:01 -953
Okanogan 08:07:00 -61.8 Dark Up 58.2 231.4 Up 07:52:00 - 08:22:00 -1019
Brewster 08:07:00 -62.1 Dark Up 58.5 231.5 Up 07:52:00 - 08:22:00 -1049
Victoria 08:07:11 -61.5 Dark Up 60.0 225.6 Up 07:52:11 - 08:22:11 -1059
Manson/Chelan 08:07:01 -62.3 Dark Up 58.8 231.2 Up 07:52:01 - 08:22:01 -1075
Wenatchee 08:07:00 -62.8 Dark Up 59.2 231.6 Up 07:52:00 - 08:22:00 -1124
Ellensburg 08:07:00 -63.2 Dark Up 59.6 231.8 Up 07:52:00 - 08:22:00 -1168
Yakima 08:07:00 -63.6 Dark Up 59.8 232.3 Up 07:52:00 - 08:22:00 -1209
Toppenish/White Swan 08:06:59 -63.8 Dark Up 59.9 232.9 Up 07:51:59 - 08:21:59 -1227
PNWRO 08:06:54 -64.2 Dark Up 59.3 235.5 Up 07:51:54 - 08:21:54 -1240
The Dalles 08:07:00 -64.5 Dark Up 60.8 232.8 Up 07:52:00 - 08:22:00 -1317
Maupin 08:06:59 -65.0 Dark Up 61.0 233.5 Up 07:51:59 - 08:21:59 -1357
Sisters 08:07:00 -65.8 Dark Up 61.8 234.1 Up 07:52:00 - 08:22:00 -1453
Bend 08:06:58 -66.1 Dark Up 61.8 234.9 Up 07:51:58 - 08:21:58 -1473
Oregon Observatory 08:06:58 -66.2 Dark Up 61.9 234.9 Up 07:51:58 - 08:21:58 -1493
Dunrhomin 08:06:03 -66.8 Dark Up 52.4 258.3 Up 07:51:03 - 08:21:03 -1530
Nikitin 08:06:03 -67.0 Dark Up 52.4 258.5 Up 07:51:03 - 08:21:03 -1549
CU-SBO 08:06:03 -67.1 Dark Up 52.5 258.5 Up 07:51:03 - 08:21:03 -1557
Chiloquin 08:06:58 -67.5 Dark Up 62.9 236.4 Up 07:51:58 - 08:21:58 -1633
Klamath Falls 08:06:57 -67.9 Dark Up 63.1 237.1 Up 07:51:57 - 08:21:57 -1667
Cedarville 08:06:51 -68.7 Dark Up 62.4 240.5 Up 07:51:51 - 08:21:51 -1712
Fall River/Burney 08:06:54 -69.1 Dark Up 63.5 239.6 Up 07:51:54 - 08:21:54 -1782
Gimple 08:06:51 -70.0 Dark Up 63.6 241.9 Up 07:51:51 - 08:21:51 -1867
Greenville 08:06:51 -70.0 Dark Up 63.6 241.8 Up 07:51:51 - 08:21:51 -1869
Quincy 08:06:51 -70.2 Dark Up 63.7 242.2 Up 07:51:51 - 08:21:51 -1890
Portola 08:06:49 -70.4 Dark Up 63.4 243.0 Up 07:51:49 - 08:21:49 -1894
Reno 08:06:47 -70.6 Dark Up 63.1 244.3 Up 07:51:47 - 08:21:47 -1911
Carson City 08:06:46 -71.0 Dark Up 63.3 245.0 Up 07:51:46 - 08:21:46 -1948
Yerington 08:06:44 -71.2 Dark Up 62.9 246.2 Up 07:51:44 - 08:21:44 -1957
Gardnerville 08:06:45 -71.3 Dark Up 63.3 245.5 Up 07:51:45 - 08:21:45 -1972
Hawthorne 08:06:41 -71.7 Dark Up 62.7 247.6 Up 07:51:41 - 08:21:41 -1995
Lee Vining 08:06:42 -72.2 Dark Up 63.3 248.1 Up 07:51:42 - 08:21:42 -2063
Bishop 08:06:39 -72.8 Dark Up 63.0 250.0 Up 07:51:39 - 08:21:39 -2112
Beatty 08:06:33 -73.2 Dark Up 61.9 252.6 Up 07:51:33 - 08:21:33 -2129
Patrick 08:06:21 -74.2 Dark Up 60.1 257.9 Up 07:51:21 - 08:21:21 -2224
Laughlin/Bullhead City 08:06:23 -74.6 Dark Up 60.7 257.7 Up 07:51:23 - 08:21:23 -2265
Lake Havasu City 08:06:21 -75.2 Dark Up 60.6 259.1 Up 07:51:21 - 08:21:21 -2330
George/Scottsdale 08:06:11 -75.1 Dark Up 58.7 262.3 Up 07:51:11 - 08:21:11 -2356
Wildwood 08:06:35 -76.1 Dark Up 64.1 256.0 Up 07:51:35 - 08:21:35 -2460
Idyllwild 08:06:28 -76.3 Dark Up 62.7 258.5 Up 07:51:28 - 08:21:28 -2460
Calipatria 08:06:23 -76.7 Dark Up 61.8 260.6 Up 07:51:23 - 08:21:23 -2500
Yuma 08:06:19 -76.9 Dark Up 61.2 262.1 Up 07:51:19 - 08:21:19 -2526

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 05VA123, (2024/01/20 08:08UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.07  37
Alhena         06:37:42.8 +16:23:57  1.9  9.47  43
9 Gem          06:16:58.7 +23:44:27  6.1  0.92  37
PPM 095790     06:20:04.9 +24:34:00  8.5  0.52  38
PPM 095716     06:17:34.7 +24:32:26 10.1  0.12  37
05VA123        06:17:48.2 +24:38:44 16.3        37
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:08:38 UT

Marc W. Buie, Southwest Research Institute

RECON