RECON: TNO occultation with 04XX190

Event between 04XX190 and star GA1120:02420963 with event index number of 1979865

Geocentric closest approach at 2024/01/01 11:02:43 UTC

J2000 position of star is 06:45:11.5 +23:48:08
Equinox of date position of star is 06:46:32.7 +23:46:39
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 61 degrees from the moon. Moon is 74% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 42.2 AU from the Sun and 41.2 AU from the Earth.
The TNO is moving 25.5 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 382 seconds.
The 1-sigma cross-track error in the shadow position is 1789 km.
The sky-plane scale is 29857.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=258.2 km assuming a 5% albedo -- 10.1 sec chord
Diameter=105.4 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04XX190, (2024/01/01 11:03UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:47.0 +27:57:59  1.1 14.15  48
Alhena         06:39:05.9 +16:22:36  1.9  7.61  63
PPM 096264     06:38:55.5 +24:34:07  6.5  1.93  63
PPM 096508     06:47:37.7 +23:20:40  7.4  0.49  61
PPM 096503     06:47:08.3 +23:49:37  9.5  0.12  61
PPM 096480     06:46:30.3 +23:51:33 10.4  0.09  61
04XX190        06:46:39.2 +23:46:32 15.3        61
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 2.4 sigma about the mid-time.
The median site spacing is 22.2 km RECON observability=1.0 and success probability=17.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:00:45 -37.2 Dark Up 37.7 260.7 Up 10:45:45 - 11:15:45 3708
Kamloops 11:01:04 -46.2 Dark Up 46.7 248.5 Up 10:46:04 - 11:16:04 3231
Kelowna 11:01:00 -46.0 Dark Up 46.5 250.2 Up 10:46:00 - 11:16:00 3184
Peachland 11:01:00 -46.2 Dark Up 46.7 250.0 Up 10:46:00 - 11:16:00 3167
Summerland 11:00:59 -46.2 Dark Up 46.7 250.2 Up 10:45:59 - 11:15:59 3157
Penticton 11:00:59 -46.1 Dark Up 46.6 250.4 Up 10:45:59 - 11:15:59 3154
Oliver 11:00:59 -46.3 Dark Up 46.8 250.8 Up 10:45:59 - 11:15:59 3124
Anarchist Mountain Observatory 11:00:57 -46.2 Dark Up 46.7 251.1 Up 10:45:57 - 11:15:57 3114
Tonasket 11:00:57 -46.3 Dark Up 46.8 251.4 Up 10:45:57 - 11:15:57 3085
Okanogan 11:00:57 -46.5 Dark Up 47.0 251.5 Up 10:45:57 - 11:15:57 3053
Brewster 11:00:56 -46.8 Dark Up 47.3 251.6 Up 10:45:56 - 11:15:56 3024
Manson/Chelan 11:00:56 -47.1 Dark Up 47.6 251.5 Up 10:45:56 - 11:15:56 2997
Victoria 11:01:05 -48.8 Dark Up 49.3 247.6 Up 10:46:05 - 11:16:05 2972
Wenatchee 11:00:55 -47.3 Dark Up 47.8 251.8 Up 10:45:55 - 11:15:55 2951
Ellensburg 11:00:55 -47.6 Dark Up 48.1 252.0 Up 10:45:55 - 11:15:55 2909
Yakima 11:00:54 -47.8 Dark Up 48.2 252.4 Up 10:45:54 - 11:15:54 2872
PNWRO 11:00:49 -46.8 Dark Up 47.3 254.6 Up 10:45:49 - 11:15:49 2864
Toppenish/White Swan 11:00:53 -47.7 Dark Up 48.2 252.8 Up 10:45:53 - 11:15:53 2857
Goldendale 11:00:52 -48.2 Dark Up 48.6 253.0 Up 10:45:52 - 11:15:52 2797
The Dalles 11:00:53 -48.5 Dark Up 48.9 252.9 Up 10:45:53 - 11:15:53 2767
Dunrhomin 11:00:09 -37.9 Dark Up 38.2 270.4 Up 10:45:09 - 11:15:09 2767
CU-SBO 11:00:08 -38.0 Dark Up 38.3 270.5 Up 10:45:08 - 11:15:08 2742
Maupin 11:00:52 -48.5 Dark Up 49.0 253.5 Up 10:45:52 - 11:15:52 2732
Sisters 11:00:51 -49.1 Dark Up 49.6 254.0 Up 10:45:51 - 11:15:51 2640
Bend 11:00:49 -49.0 Dark Up 49.5 254.5 Up 10:45:49 - 11:15:49 2625
Oregon Observatory 11:00:49 -49.2 Dark Up 49.6 254.6 Up 10:45:49 - 11:15:49 2606
North Lake 11:00:46 -49.0 Dark Up 49.4 255.8 Up 10:45:46 - 11:15:46 2562
Lakeview 11:00:43 -48.9 Dark Up 49.3 257.4 Up 10:45:43 - 11:15:43 2479
Chiloquin 11:00:47 -49.8 Dark Up 50.2 255.7 Up 10:45:47 - 11:15:47 2473
Klamath Falls 11:00:46 -49.9 Dark Up 50.3 256.2 Up 10:45:46 - 11:15:46 2443
Cedarville 11:00:41 -48.9 Dark Up 49.3 258.3 Up 10:45:41 - 11:15:41 2423
Fall River/Burney 11:00:43 -49.9 Dark Up 50.3 257.9 Up 10:45:43 - 11:15:43 2343
Susanville 11:00:40 -49.5 Dark Up 49.8 259.2 Up 10:45:40 - 11:15:40 2305
Gimple 11:00:39 -49.7 Dark Up 50.1 259.4 Up 10:45:39 - 11:15:39 2273
Greenville 11:00:40 -49.8 Dark Up 50.1 259.3 Up 10:45:40 - 11:15:40 2271
Portola 11:00:38 -49.5 Dark Up 49.8 260.1 Up 10:45:38 - 11:15:38 2253
Quincy 11:00:39 -49.8 Dark Up 50.2 259.5 Up 10:45:39 - 11:15:39 2252
Reno 11:00:36 -49.0 Dark Up 49.4 260.9 Up 10:45:36 - 11:15:36 2247
Yerington 11:00:33 -48.6 Dark Up 49.0 262.0 Up 10:45:33 - 11:15:33 2214
Carson City 11:00:35 -49.1 Dark Up 49.4 261.3 Up 10:45:35 - 11:15:35 2214
Gardnerville 11:00:34 -49.1 Dark Up 49.4 261.6 Up 10:45:34 - 11:15:34 2192
Hawthorne 11:00:31 -48.3 Dark Up 48.6 262.9 Up 10:45:31 - 11:15:31 2186
Tonopah 11:00:27 -47.3 Dark Up 47.6 264.4 Up 10:45:27 - 11:15:27 2184
Lee Vining 11:00:31 -48.8 Dark Up 49.1 263.2 Up 10:45:31 - 11:15:31 2118
Indian Springs 11:00:20 -46.2 Dark Up 46.5 267.0 Up 10:45:20 - 11:15:20 2091
Beatty 11:00:23 -47.0 Dark Up 47.3 266.0 Up 10:45:23 - 11:15:23 2088
Bishop 11:00:28 -48.3 Dark Up 48.6 264.4 Up 10:45:28 - 11:15:28 2082
Henderson 11:00:17 -45.7 Dark Up 46.0 268.0 Up 10:45:17 - 11:15:17 2062
Patrick 11:00:13 -44.8 Dark Up 45.1 269.3 Up 10:45:13 - 11:15:13 2039
Kingman/Dolan Springs 11:00:13 -45.0 Dark Up 45.2 269.4 Up 10:45:13 - 11:15:13 2011
Laughlin/Bullhead City 11:00:14 -45.4 Dark Up 45.7 269.2 Up 10:45:14 - 11:15:14 1992
Mohave Valley 11:00:14 -45.4 Dark Up 45.7 269.4 Up 10:45:14 - 11:15:14 1966
George/Scottsdale 11:00:05 -43.2 Dark Up 43.4 272.1 Up 10:45:05 - 11:15:05 1944
Lake Havasu City 11:00:12 -45.2 Dark Up 45.5 270.0 Up 10:45:12 - 11:15:12 1936
Parker 11:00:11 -45.2 Dark Up 45.4 270.4 Up 10:45:11 - 11:15:11 1903
Idyllwild 11:00:16 -47.2 Dark Up 47.4 269.4 Up 10:45:16 - 11:15:16 1785
Calipatria 11:00:12 -46.3 Dark Up 46.5 270.7 Up 10:45:12 - 11:15:12 1764
Wildwood 11:00:21 -48.8 Dark Up 49.0 268.0 Up 10:45:21 - 11:15:21 1759
Yuma 11:00:09 -45.5 Dark Up 45.7 271.7 Up 10:45:09 - 11:15:09 1752

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, (2024/01/01 11:03UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 14.15  48
Alhena         06:37:42.8 +16:23:57  1.9  7.61  63
PPM 096264     06:37:27.2 +24:35:27  6.5  1.93  63
PPM 096508     06:46:10.3 +23:22:18  7.4  0.49  61
PPM 096503     06:45:40.6 +23:51:14  9.5  0.12  61
PPM 096480     06:45:02.6 +23:53:09 10.4  0.09  61
04XX190        06:45:11.5 +23:48:08 15.3        61
Positions are for J2000

Event circumstances last updated at 2022/03/24 00:35:28 UT

Marc W. Buie, Southwest Research Institute

RECON