RECON: TNO occultation with 534631

Event between (534631) 14UX229 and star GA1220:00729876 with event index number of 2388577

Geocentric closest approach at 2027/10/05 06:39:25 UTC

J2000 position of star is 03:48:36.3 +32:01:31
Equinox of date position of star is 03:50:00.8 +32:05:33
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 163 degrees from the moon. Moon is 29% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 28.3 AU from the Sun and 27.6 AU from the Earth.
The TNO is moving 14.4 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 535 seconds.
The 1-sigma cross-track error in the shadow position is 4305 km.
The sky-plane scale is 20035.6 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=131.8 km assuming a 5% albedo -- 9.1 sec chord
Diameter=53.8 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 534631, (2027/10/05 06:39UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.0 +16:33:47  0.8 18.86 168
44Zet Per      03:55:53.1 +31:57:49  2.8  1.18 165
38Omi Per      03:46:04.0 +32:22:26  3.7  0.94 162
PPM 068791     03:50:08.5 +32:02:45  8.5  0.08 163
534631         03:50:21.3 +32:06:31 14.0       164
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 1.7 sigma about the mid-time.
The median site spacing is 28.2 km RECON observability=1.0 and success probability=12.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:44:13 -42.0 Dark Down 41.0 87.3 Up 06:29:13 - 06:59:13 -713
Kelowna 06:44:13 -42.9 Dark Down 41.6 87.2 Up 06:29:13 - 06:59:13 -813
Peachland 06:44:15 -43.0 Dark Down 41.4 86.9 Up 06:29:15 - 06:59:15 -816
Victoria 06:44:29 -43.1 Dark Down 38.9 83.4 Up 06:29:29 - 06:59:29 -830
Summerland 06:44:15 -43.1 Dark Down 41.4 86.9 Up 06:29:15 - 06:59:15 -833
Penticton 06:44:15 -43.2 Dark Down 41.5 86.9 Up 06:29:15 - 06:59:15 -842
Oliver 06:44:17 -43.6 Dark Down 41.5 86.6 Up 06:29:17 - 06:59:17 -876
Anarchist Mountain Observatory 06:44:16 -43.8 Dark Down 41.6 86.6 Up 06:29:16 - 06:59:16 -897
Sleaford 06:43:24 -42.5 Dark Down 49.8 100.5 Up 06:28:24 - 06:58:24 -898
Tonasket 06:44:18 -44.0 Dark Down 41.5 86.3 Up 06:29:18 - 06:59:18 -925
Okanogan 06:44:20 -44.3 Dark Down 41.4 85.9 Up 06:29:20 - 06:59:20 -953
Brewster 06:44:21 -44.5 Dark Down 41.3 85.5 Up 06:29:21 - 06:59:21 -974
Manson/Chelan 06:44:23 -44.6 Dark Down 41.0 85.1 Up 06:29:23 - 06:59:23 -984
Wenatchee 06:44:25 -45.0 Dark Down 40.8 84.5 Up 06:29:25 - 06:59:25 -1025
Ellensburg 06:44:27 -45.3 Dark Down 40.7 84.0 Up 06:29:27 - 06:59:27 -1058
Yakima 06:44:29 -45.7 Dark Down 40.6 83.7 Up 06:29:29 - 06:59:29 -1097
Toppenish/White Swan 06:44:29 -45.9 Dark Down 40.7 83.6 Up 06:29:29 - 06:59:29 -1123
Goldendale 06:44:32 -46.3 Dark Down 40.4 82.9 Up 06:29:32 - 06:59:32 -1164
The Dalles 06:44:35 -46.4 Dark Down 40.1 82.5 Up 06:29:35 - 06:59:35 -1175
PNWRO 06:44:27 -46.7 Dark Down 41.7 84.3 Up 06:29:27 - 06:59:27 -1202
Maupin 06:44:35 -46.8 Dark Down 40.1 82.2 Up 06:29:35 - 06:59:35 -1219
Sisters 06:44:40 -47.5 Dark Down 39.6 81.1 Up 06:29:40 - 06:59:40 -1290
Bend 06:44:40 -47.8 Dark Down 39.8 81.1 Up 06:29:40 - 06:59:40 -1321
Oregon Observatory 06:44:41 -47.9 Dark Down 39.7 80.9 Up 06:29:41 - 06:59:41 -1334
North Lake 06:44:42 -48.6 Dark Down 40.0 80.7 Up 06:29:42 - 06:59:42 -1413
Chiloquin 06:44:47 -48.9 Dark Down 39.2 79.6 Up 06:29:47 - 06:59:47 -1450
Klamath Falls 06:44:47 -49.3 Dark Down 39.2 79.4 Up 06:29:47 - 06:59:47 -1487
Lakeview 06:44:44 -49.8 Dark Down 40.2 80.1 Up 06:29:44 - 06:59:44 -1535
Cedarville 06:44:46 -50.4 Dark Down 40.2 79.7 Up 06:29:46 - 06:59:46 -1606
Fall River/Burney 06:44:51 -50.4 Dark Down 39.2 78.6 Up 06:29:51 - 06:59:51 -1615
Susanville 06:44:50 -51.3 Dark Down 39.7 78.5 Up 06:29:50 - 06:59:50 -1702
Greenville 06:44:52 -51.4 Dark Down 39.4 78.2 Up 06:29:52 - 06:59:52 -1720
Gimple 06:44:52 -51.4 Dark Down 39.4 78.2 Up 06:29:52 - 06:59:52 -1723
Quincy 06:44:52 -51.6 Dark Down 39.3 78.0 Up 06:29:52 - 06:59:52 -1741
Portola 06:44:52 -51.9 Dark Down 39.7 78.1 Up 06:29:52 - 06:59:52 -1768
Reno 06:44:50 -52.3 Dark Down 40.1 78.2 Up 06:29:50 - 06:59:50 -1816
Carson City 06:44:51 -52.7 Dark Down 40.0 78.0 Up 06:29:51 - 06:59:51 -1853
Gardnerville 06:44:51 -52.9 Dark Down 40.0 77.8 Up 06:29:51 - 06:59:51 -1879
Yerington 06:44:50 -53.1 Dark Down 40.5 78.1 Up 06:29:50 - 06:59:50 -1893
Hawthorne 06:44:49 -53.6 Dark Down 40.8 78.0 Up 06:29:49 - 06:59:49 -1956
Lee Vining 06:44:52 -54.0 Dark Down 40.3 77.3 Up 06:29:52 - 06:59:52 -1998
Tonopah 06:44:46 -54.5 Dark Down 41.8 78.2 Up 06:29:46 - 06:59:46 -2048
Bishop 06:44:51 -54.8 Dark Down 40.7 77.1 Up 06:29:51 - 06:59:51 -2082
Dunrhomin 06:43:54 -54.4 Dark Down 51.2 86.8 Up 06:28:54 - 06:58:54 -2135
CU-SBO 06:43:55 -54.6 Dark Down 51.1 86.4 Up 06:28:55 - 06:58:55 -2159
Beatty 06:44:47 -55.7 Dark Down 41.9 77.4 Up 06:29:47 - 06:59:47 -2181
Indian Springs 06:44:44 -56.4 Dark Down 42.7 77.6 Up 06:29:44 - 06:59:44 -2248
Henderson 06:44:43 -57.1 Dark Down 43.1 77.4 Up 06:29:43 - 06:59:43 -2324
Wildwood 06:45:00 -57.6 Dark Down 39.8 74.4 Up 06:30:00 - 07:00:00 -2411
Patrick 06:44:40 -57.9 Dark Down 43.8 77.3 Up 06:29:40 - 06:59:40 -2422
Laughlin/Bullhead City 06:44:43 -58.0 Dark Down 43.2 76.8 Up 06:29:43 - 06:59:43 -2427
Kingman/Dolan Springs 06:44:41 -58.1 Dark Down 43.6 77.0 Up 06:29:41 - 06:59:41 -2440
Mohave Valley 06:44:44 -58.2 Dark Down 43.2 76.6 Up 06:29:44 - 06:59:44 -2455
Lake Havasu City 06:44:44 -58.7 Dark Down 43.3 76.3 Up 06:29:44 - 06:59:44 -2505
Idyllwild 06:44:54 -58.7 Dark Down 41.2 74.8 Up 06:29:54 - 06:59:54 -2509
Parker 06:44:44 -59.0 Dark Down 43.2 76.0 Up 06:29:44 - 06:59:44 -2542
Calipatria 06:44:51 -59.6 Dark Down 42.0 74.6 Up 06:29:51 - 06:59:51 -2610
George/Scottsdale 06:44:35 -60.1 Dark Down 45.0 76.5 Up 06:29:35 - 06:59:35 -2658
Yuma 06:44:49 -60.3 Dark Down 42.6 74.6 Up 06:29:49 - 06:59:49 -2683

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 534631, (2027/10/05 06:39UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 18.86 168
44Zet Per      03:54:07.9 +31:53:01  2.8  1.18 165
38Omi Per      03:44:19.1 +32:17:17  3.7  0.94 162
PPM 068791     03:48:23.6 +31:57:45  8.5  0.08 163
534631         03:48:36.3 +32:01:31 14.0       163
Positions are for J2000

Event circumstances last updated at 2022/05/11 22:29:19 UT

Marc W. Buie, Southwest Research Institute

RECON