RECON: TNO occultation with 00YX1

Event between 00YX1 and star GA1140:01814336 with event index number of 2007640

Geocentric closest approach at 2027/12/19 05:55:36 UTC

J2000 position of star is 06:04:47.4 +25:28:05
Equinox of date position of star is 06:06:10.4 +25:27:54
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 71 degrees from the moon. Moon is 63% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 43.4 AU from the Sun and 42.4 AU from the Earth.
The TNO is moving 25.6 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 912 seconds.
The 1-sigma cross-track error in the shadow position is 2307 km.
The sky-plane scale is 30777.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 8.4 sec chord
Diameter=87.7 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 00YX1, (2027/12/19 05:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:41.2 +07:24:36  0.4 18.21  73
Alnath         05:28:03.7 +28:37:43  1.6  9.13  80
139 Tau        05:59:43.8 +25:57:17  4.7  1.61  73
PPM 095328     06:05:55.8 +25:26:25  8.2  0.14  71
PPM 095349     06:06:44.6 +25:21:29 11.2  0.12  71
00YX1          06:06:31.2 +25:27:51 15.9        71
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 1.0 sigma about the mid-time.
The median site spacing is 29.1 km RECON observability=1.0 and success probability=20.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:57:11 -54.1 Dark Down 53.4 120.5 Up 05:42:11 - 06:12:11 2708
Sleaford 05:56:34 -58.8 Dark Up 59.2 142.1 Up 05:41:34 - 06:11:34 2669
Kelowna 05:57:10 -55.0 Dark Down 54.4 120.6 Up 05:42:10 - 06:12:10 2616
Peachland 05:57:11 -54.9 Dark Down 54.2 120.1 Up 05:42:11 - 06:12:11 2610
Summerland 05:57:12 -55.1 Dark Down 54.4 120.0 Up 05:42:12 - 06:12:12 2595
Penticton 05:57:12 -55.2 Dark Down 54.5 120.1 Up 05:42:12 - 06:12:12 2586
Victoria 05:57:22 -53.7 Dark Down 52.7 114.4 Up 05:42:22 - 06:12:22 2553
Oliver 05:57:12 -55.4 Dark Down 54.6 119.7 Up 05:42:12 - 06:12:12 2552
Anarchist Mountain Observatory 05:57:12 -55.6 Dark Down 54.8 119.7 Up 05:42:12 - 06:12:12 2533
Tonasket 05:57:12 -55.7 Dark Down 55.0 119.2 Up 05:42:12 - 06:12:12 2504
Okanogan 05:57:13 -55.9 Dark Down 55.0 118.6 Up 05:42:13 - 06:12:13 2473
Brewster 05:57:14 -55.9 Dark Down 55.0 118.1 Up 05:42:14 - 06:12:14 2450
Manson/Chelan 05:57:16 -55.8 Dark Down 54.9 117.4 Up 05:42:16 - 06:12:16 2436
Wenatchee 05:57:17 -56.0 Dark Down 55.0 116.6 Up 05:42:17 - 06:12:17 2392
Ellensburg 05:57:18 -56.1 Dark Down 55.1 115.8 Up 05:42:18 - 06:12:18 2355
Yakima 05:57:19 -56.3 Dark Down 55.3 115.2 Up 05:42:19 - 06:12:19 2315
Toppenish/White Swan 05:57:19 -56.6 Dark Down 55.5 115.1 Up 05:42:19 - 06:12:19 2291
Goldendale 05:57:21 -56.6 Dark Down 55.4 113.9 Up 05:42:21 - 06:12:21 2244
PNWRO 05:57:16 -57.6 Dark Down 56.5 116.4 Up 05:42:16 - 06:12:16 2229
The Dalles 05:57:22 -56.5 Dark Down 55.3 113.2 Up 05:42:22 - 06:12:22 2228
Maupin 05:57:22 -56.8 Dark Down 55.5 112.8 Up 05:42:22 - 06:12:22 2184
Sisters 05:57:25 -56.9 Dark Down 55.5 111.1 Up 05:42:25 - 06:12:25 2106
Bend 05:57:25 -57.2 Dark Down 55.8 111.0 Up 05:42:25 - 06:12:25 2077
Oregon Observatory 05:57:25 -57.2 Dark Down 55.8 110.7 Up 05:42:25 - 06:12:25 2062
North Lake 05:57:25 -57.8 Dark Down 56.4 110.3 Up 05:42:25 - 06:12:25 1988
Chiloquin 05:57:29 -57.5 Dark Down 55.9 108.4 Up 05:42:29 - 06:12:29 1937
Klamath Falls 05:57:29 -57.7 Dark Down 56.1 108.0 Up 05:42:29 - 06:12:29 1901
Lakeview 05:57:25 -58.7 Dark Down 57.1 109.4 Up 05:42:25 - 06:12:25 1870
Cedarville 05:57:26 -59.1 Dark Down 57.4 108.6 Up 05:42:26 - 06:12:26 1800
Fall River/Burney 05:57:30 -58.5 Dark Down 56.7 106.7 Up 05:42:30 - 06:12:30 1773
Susanville 05:57:29 -59.3 Dark Down 57.4 106.5 Up 05:42:29 - 06:12:29 1695
Greenville 05:57:30 -59.2 Dark Down 57.3 105.8 Up 05:42:30 - 06:12:30 1672
Gimple 05:57:30 -59.2 Dark Down 57.4 105.9 Up 05:42:30 - 06:12:30 1670
Quincy 05:57:30 -59.3 Dark Down 57.4 105.5 Up 05:42:30 - 06:12:30 1651
Portola 05:57:29 -59.7 Dark Down 57.7 105.8 Up 05:42:29 - 06:12:29 1629
Reno 05:57:28 -60.2 Dark Down 58.3 106.0 Up 05:42:28 - 06:12:28 1589
Carson City 05:57:28 -60.4 Dark Down 58.4 105.4 Up 05:42:28 - 06:12:28 1551
Gardnerville 05:57:28 -60.5 Dark Down 58.5 105.1 Up 05:42:28 - 06:12:28 1525
Yerington 05:57:27 -60.9 Dark Down 58.9 105.8 Up 05:42:27 - 06:12:27 1519
Hawthorne 05:57:26 -61.5 Dark Down 59.4 105.5 Up 05:42:26 - 06:12:26 1461
Dunrhomin 05:56:44 -68.8 Dark Up 68.0 126.2 Up 05:41:44 - 06:11:44 1450
CU-SBO 05:56:44 -69.0 Dark Up 68.1 125.6 Up 05:41:44 - 06:11:44 1425
Lee Vining 05:57:28 -61.3 Dark Down 59.2 104.1 Up 05:42:28 - 06:12:28 1411
Tonopah 05:57:23 -62.7 Dark Down 60.6 106.1 Up 05:42:23 - 06:12:23 1387
Bishop 05:57:27 -62.1 Dark Down 59.9 103.8 Up 05:42:27 - 06:12:27 1335
Beatty 05:57:23 -63.5 Dark Down 61.3 104.6 Up 05:42:23 - 06:12:23 1257
Indian Springs 05:57:20 -64.4 Dark Down 62.2 105.0 Up 05:42:20 - 06:12:20 1203
Henderson 05:57:18 -65.1 Dark Down 62.9 104.7 Up 05:42:18 - 06:12:18 1135
Patrick 05:57:16 -66.2 Dark Down 63.9 104.6 Up 05:42:16 - 06:12:16 1049
Laughlin/Bullhead City 05:57:18 -65.7 Dark Down 63.4 103.4 Up 05:42:18 - 06:12:18 1035
Kingman/Dolan Springs 05:57:16 -66.1 Dark Down 63.8 104.0 Up 05:42:16 - 06:12:16 1029
Mohave Valley 05:57:18 -65.8 Dark Down 63.5 102.9 Up 05:42:18 - 06:12:18 1005
Wildwood 05:57:31 -63.0 Dark Down 60.4 98.1 Up 05:42:31 - 06:12:31 993
Lake Havasu City 05:57:18 -66.2 Dark Down 63.8 102.4 Up 05:42:18 - 06:12:18 958
Parker 05:57:18 -66.3 Dark Down 63.9 101.7 Up 05:42:18 - 06:12:18 920
Idyllwild 05:57:26 -64.6 Dark Down 62.0 98.9 Up 05:42:26 - 06:12:26 919
George/Scottsdale 05:57:11 -68.3 Dark Down 65.9 103.1 Up 05:42:11 - 06:12:11 835
Calipatria 05:57:23 -65.7 Dark Down 63.0 98.6 Up 05:42:23 - 06:12:23 832
Yuma 05:57:21 -66.5 Dark Down 63.8 98.5 Up 05:42:21 - 06:12:21 770

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 00YX1, (2027/12/19 05:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.21  73
Alnath         05:26:17.6 +28:36:23  1.6  9.13  80
139 Tau        05:57:59.6 +25:57:14  4.7  1.61  73
PPM 095328     06:04:12.1 +25:26:37  8.2  0.14  71
PPM 095349     06:05:00.9 +25:21:44 11.2  0.12  71
00YX1          06:04:47.4 +25:28:05 15.9        71
Positions are for J2000

Event circumstances last updated at 2022/05/19 23:04:22 UT

Marc W. Buie, Southwest Research Institute

RECON