RECON: TNO occultation with 04XX190

Event between 04XX190 and star GA1120:02432230 with event index number of 1979861

Geocentric closest approach at 2023/12/22 14:19:17 UTC

J2000 position of star is 06:46:04.1 +23:47:06
Equinox of date position of star is 06:47:31.2 +23:45:29
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 64 degrees from the moon. Moon is 79% illuminated.
Apparent brightness V=23.0

[RECON map]
Object is 42.1 AU from the Sun and 41.2 AU from the Earth.
Apparent velocity is 25.1 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 396 seconds.
The 1-sigma cross-track error in the shadow position is 2205 km.
The sky-plane scale is 29867.2 km/arcsec.

The object has an absolute magnitude Hv=6.8
Diameter=258.2 km assuming a 5% albedo -- 10.3 sec chord
Diameter=105.4 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04XX190, (2023/12/22 14:19UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:46.9 +27:57:59  1.1 13.97  77
Alhena         06:39:05.8 +16:22:36  1.9  7.64  63
PPM 096264     06:38:55.4 +24:34:08  6.5  2.12  62
PPM 096508     06:47:37.6 +23:20:40  7.4  0.41  64
PPM 096503     06:47:08.2 +23:49:37  9.5  0.11  64
PPM 096511     06:47:46.4 +23:44:42 10.7  0.06  64
04XX190        06:47:31.6 +23:45:29 16.5        64
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 2.3 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 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)
Sleaford 14:16:59 -7.6 NT Down 14.1 290.8 Really Low 14:01:59 - 14:31:59 1981
Kamloops 14:16:52 -15.4 AT Down 22.4 280.7 Low 14:01:52 - 14:31:52 1499
Kelowna 14:16:49 -14.6 AT Down 21.6 281.7 Low 14:01:49 - 14:31:49 1475
Peachland 14:16:48 -14.7 AT Down 21.8 281.5 Low 14:01:48 - 14:31:48 1460
Summerland 14:16:48 -14.6 AT Down 21.7 281.6 Low 14:01:48 - 14:31:48 1453
Penticton 14:16:48 -14.5 AT Down 21.6 281.7 Low 14:01:48 - 14:31:48 1452
Oliver 14:16:46 -14.4 AT Down 21.6 281.9 Low 14:01:46 - 14:31:46 1430
Anarchist Mountain Observatory 14:16:46 -14.2 AT Down 21.4 282.1 Low 14:01:46 - 14:31:46 1426
Okanogan 14:16:43 -14.1 AT Down 21.4 282.2 Low 14:01:43 - 14:31:43 1377
Brewster 14:16:43 -14.2 AT Down 21.5 282.1 Low 14:01:43 - 14:31:43 1354
Manson/Chelan 14:16:42 -14.3 AT Down 21.7 281.9 Low 14:01:42 - 14:31:42 1329
Dunrhomin 14:16:18 -1.5 CT Down 9.2 293.5 Really Low 14:01:18 - 14:31:18 1305
Wenatchee 14:16:40 -14.3 AT Down 21.7 282.0 Low 14:01:40 - 14:31:40 1293
Nikitin 14:16:18 -1.4 CT Down 9.2 293.5 Really Low 14:01:18 - 14:31:18 1291
CU-SBO 14:16:18 -1.4 CT Down 9.2 293.4 Really Low 14:01:18 - 14:31:18 1285
Victoria 14:16:45 -16.6 AT Down 24.0 279.4 Low 14:01:45 - 14:31:45 1271
Ellensburg 14:16:39 -14.3 AT Down 21.8 282.0 Low 14:01:39 - 14:31:39 1258
PNWRO 14:16:35 -12.9 AT Down 20.5 283.5 Low 14:01:35 - 14:31:35 1244
Yakima 14:16:37 -14.2 AT Down 21.7 282.2 Low 14:01:37 - 14:31:37 1231
Toppenish/White Swan 14:16:37 -14.0 AT Down 21.6 282.4 Low 14:01:37 - 14:31:37 1221
The Dalles 14:16:34 -14.3 AT Down 21.9 282.1 Low 14:01:34 - 14:31:34 1143
Maupin 14:16:33 -14.1 AT Down 21.8 282.4 Low 14:01:33 - 14:31:33 1118
Sisters 14:16:30 -14.1 AT Down 21.9 282.4 Low 14:01:30 - 14:31:30 1041
Bend 14:16:29 -13.9 AT Down 21.7 282.6 Low 14:01:29 - 14:31:29 1032
Oregon Observatory 14:16:29 -13.9 AT Down 21.8 282.6 Low 14:01:29 - 14:31:29 1016
Chiloquin 14:16:24 -13.8 AT Down 21.8 282.9 Low 14:01:24 - 14:31:24 907
Cedarville 14:16:21 -12.3 AT Down 20.3 284.3 Low 14:01:21 - 14:31:21 888
Klamath Falls 14:16:23 -13.6 AT Down 21.7 283.0 Low 14:01:23 - 14:31:23 885
Fall River/Burney 14:16:19 -13.0 AT Down 21.1 283.7 Low 14:01:19 - 14:31:19 810
Gimple 14:16:17 -12.3 AT Down 20.5 284.3 Low 14:01:17 - 14:31:17 761
Greenville 14:16:16 -12.3 AT Down 20.6 284.3 Low 14:01:16 - 14:31:16 758
Reno 14:16:14 -11.3 NT Down 19.6 285.1 Really Low 14:01:14 - 14:31:14 753
Portola 14:16:15 -11.9 NT Down 20.1 284.7 Low 14:01:15 - 14:31:15 750
Quincy 14:16:16 -12.3 AT Down 20.5 284.4 Low 14:01:16 - 14:31:16 743
Yerington 14:16:12 -10.6 NT Down 19.0 285.7 Really Low 14:01:12 - 14:31:12 734
Carson City 14:16:13 -11.2 NT Down 19.5 285.3 Really Low 14:01:13 - 14:31:13 727
Hawthorne 14:16:11 -10.1 NT Down 18.4 286.1 Really Low 14:01:11 - 14:31:11 718
Gardnerville 14:16:13 -11.1 NT Down 19.4 285.4 Really Low 14:01:13 - 14:31:13 710
Beatty 14:16:06 -8.1 NT Down 16.6 287.6 Really Low 14:01:06 - 14:31:06 660
Lee Vining 14:16:10 -10.2 NT Down 18.7 286.0 Really Low 14:01:10 - 14:31:10 657
Patrick 14:16:02 -5.4 CT Down 13.9 289.5 Really Low 14:01:02 - 14:31:02 650
Bishop 14:16:08 -9.5 NT Down 17.9 286.6 Really Low 14:01:08 - 14:31:08 637
Laughlin/Bullhead City 14:16:01 -5.8 CT Down 14.4 289.2 Really Low 14:01:01 - 14:31:01 605
George/Scottsdale 14:15:57 -3.2 CT Down 11.8 290.9 Really Low 14:00:57 - 14:30:57 592
Lake Havasu City 14:15:59 -5.3 CT Down 13.9 289.5 Really Low 14:00:59 - 14:30:59 561
Idyllwild 14:15:57 -6.8 NT Down 15.6 288.5 Really Low 14:00:57 - 14:30:57 412
Calipatria 14:15:55 -5.7 CT Down 14.5 289.2 Really Low 14:00:55 - 14:30:55 407
Yuma 14:15:54 -4.8 CT Down 13.6 289.7 Really Low 14:00:54 - 14:30:54 406
Wildwood 14:15:58 -8.4 NT Down 17.2 287.5 Really Low 14:00:58 - 14:30:58 370

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 04XX190, (2023/12/22 14:19UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 13.97  77
Alhena         06:37:42.8 +16:23:57  1.9  7.64  63
PPM 096264     06:37:27.2 +24:35:27  6.5  2.12  62
PPM 096508     06:46:10.3 +23:22:18  7.4  0.41  64
PPM 096503     06:45:40.6 +23:51:14  9.5  0.11  64
PPM 096511     06:46:18.9 +23:46:20 10.7  0.06  64
04XX190        06:46:04.1 +23:47:06 16.5        64
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:07:37 UT

Marc W. Buie, Southwest Research Institute

RECON