RECON: TNO occultation with 126154

Event between (126154) 01YH140 and star GA1080:03266654 with event index number of 1311051

Geocentric closest approach at 2024/01/19 09:06:24 UTC

J2000 position of star is 09:59:04.5 +19:24:32
Equinox of date position of star is 10:00:08.9 +19:18:55
Stellar brightness G=14.0, use SENSEUP=64
Star is 101 degrees from the moon. Moon is 63% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 37.5 AU from the Sun and 36.6 AU from the Earth.
The TNO is moving 22.1 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 546 seconds.
The 1-sigma cross-track error in the shadow position is 5806 km.
The sky-plane scale is 26572.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 21.7 sec chord
Diameter=195.4 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 

Star training set for 126154, (2024/01/19 09:06UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:39.1 +11:50:55  1.3  7.77 106
PPM 100044     10:04:09.2 +21:49:55  5.4  2.69 101
PPM 099985     09:59:02.7 +20:03:18  8.3  0.83 100
PPM 126971     09:59:08.4 +19:21:39  9.5  0.31 100
126154         10:00:24.2 +19:17:35 14.0       101
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 1.6 sigma about the mid-time.
The median site spacing is 20.3 km RECON observability=1.0 and success probability=6.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:08:10 -58.2 Dark Up 57.6 155.1 Up 08:53:10 - 09:23:10 4612
Summerland 09:08:11 -58.5 Dark Up 57.8 154.4 Up 08:53:11 - 09:23:11 4577
Penticton 09:08:10 -58.6 Dark Up 57.9 154.6 Up 08:53:10 - 09:23:10 4574
Okanagan Falls 09:08:10 -58.7 Dark Up 58.0 154.4 Up 08:53:10 - 09:23:10 4555
Oliver 09:08:09 -58.9 Dark Up 58.2 154.3 Up 08:53:09 - 09:23:09 4540
Anarchist Mountain Observatory 09:08:09 -59.0 Dark Up 58.4 154.5 Up 08:53:09 - 09:23:09 4529
Oroville 09:08:09 -59.1 Dark Up 58.4 154.4 Up 08:53:09 - 09:23:09 4520
Tonasket 09:08:09 -59.3 Dark Up 58.6 154.2 Up 08:53:09 - 09:23:09 4498
Okanogan 09:08:09 -59.6 Dark Up 58.9 153.7 Up 08:53:09 - 09:23:09 4462
Brewster 09:08:09 -59.9 Dark Up 59.1 153.1 Up 08:53:09 - 09:23:09 4431
Manson/Chelan 09:08:10 -60.2 Dark Up 59.2 152.3 Up 08:53:10 - 09:23:10 4401
Entiat 09:08:10 -60.4 Dark Up 59.3 152.0 Up 08:53:10 - 09:23:10 4378
Wenatchee 09:08:10 -60.7 Dark Up 59.5 151.7 Up 08:53:10 - 09:23:10 4351
Ellensburg 09:08:10 -61.1 Dark Up 59.8 150.9 Up 08:53:10 - 09:23:10 4305
Pasco 09:08:05 -61.3 Dark Up 60.9 152.9 Up 08:53:05 - 09:23:05 4271
Yakima 09:08:09 -61.5 Dark Up 60.2 150.6 Up 08:53:09 - 09:23:09 4265
PNWRO 09:08:04 -61.4 Dark Up 61.2 153.1 Up 08:53:04 - 09:23:04 4254
Toppenish/White Swan 09:08:09 -61.6 Dark Up 60.4 150.7 Up 08:53:09 - 09:23:09 4248
George/Umatilla 09:08:06 -61.7 Dark Up 61.1 152.2 Up 08:53:06 - 09:23:06 4233
Goldendale 09:08:10 -62.2 Dark Up 60.7 149.4 Up 08:53:10 - 09:23:10 4183
The Dalles 09:08:11 -62.6 Dark Up 60.8 148.6 Up 08:53:11 - 09:23:11 4151
Niwot 09:07:08 -58.4 Dark Down 69.3 180.3 Up 08:52:08 - 09:22:08 4141
SwRI 09:07:09 -58.5 Dark Down 69.4 180.1 Up 08:52:09 - 09:22:09 4128
Maupin 09:08:10 -62.9 Dark Up 61.2 148.4 Up 08:53:10 - 09:23:10 4113
Madras/Culver 09:08:09 -63.4 Dark Up 61.6 147.8 Up 08:53:09 - 09:23:09 4058
Redmond 09:08:09 -63.7 Dark Up 61.9 147.3 Up 08:53:09 - 09:23:09 4021
Sisters 09:08:11 -63.8 Dark Up 61.7 146.6 Up 08:53:11 - 09:23:11 4012
Bend 09:08:09 -64.0 Dark Up 62.0 146.8 Up 08:53:09 - 09:23:09 3996
Oregon Observatory 09:08:10 -64.2 Dark Up 62.1 146.4 Up 08:53:10 - 09:23:10 3975
La Pine/Gilchrist 09:08:10 -64.4 Dark Up 62.3 146.1 Up 08:53:10 - 09:23:10 3953
North Lake 09:08:07 -64.5 Dark Up 62.9 146.7 Up 08:53:07 - 09:23:07 3927
Paisley 09:08:06 -64.9 Dark Up 63.5 146.8 Up 08:53:06 - 09:23:06 3882
Lakeview 09:08:04 -65.2 Dark Up 64.0 146.6 Up 08:53:04 - 09:23:04 3837
Chiloquin 09:08:09 -65.5 Dark Up 63.1 144.2 Up 08:53:09 - 09:23:09 3832
Klamath Falls 09:08:09 -65.7 Dark Up 63.4 144.0 Up 08:53:09 - 09:23:09 3800
Tulelake 09:08:08 -65.8 Dark Up 63.7 144.2 Up 08:53:08 - 09:23:08 3782
Cedarville 09:08:03 -65.7 Dark Up 64.6 146.2 Up 08:53:03 - 09:23:03 3777
Fall River/Burney 09:08:06 -66.6 Dark Up 64.5 143.2 Up 08:53:06 - 09:23:06 3693
Susanville 09:08:03 -66.8 Dark Up 65.3 143.8 Up 08:53:03 - 09:23:03 3651
Gimple 09:08:04 -67.1 Dark Up 65.4 143.1 Up 08:53:04 - 09:23:04 3617
Greenville 09:08:03 -67.2 Dark Up 65.4 142.9 Up 08:53:03 - 09:23:03 3614
Portola 09:08:02 -67.2 Dark Up 65.9 143.4 Up 08:53:02 - 09:23:02 3595
Quincy 09:08:03 -67.3 Dark Up 65.6 142.6 Up 08:53:03 - 09:23:03 3594
Reno 09:07:59 -67.2 Dark Up 66.4 144.4 Up 08:52:59 - 09:22:59 3588
Carson City 09:07:58 -67.4 Dark Up 66.7 143.9 Up 08:52:58 - 09:22:58 3553
Yerington 09:07:56 -67.3 Dark Up 67.1 145.0 Up 08:52:56 - 09:22:56 3552
Gardnerville 09:07:58 -67.6 Dark Up 66.9 143.7 Up 08:52:58 - 09:22:58 3529
Hawthorne 09:07:52 -67.4 Dark Up 67.7 145.5 Up 08:52:52 - 09:22:52 3522
Tonopah 09:07:48 -67.0 Dark Up 68.7 148.0 Up 08:52:48 - 09:22:48 3520
Lee Vining 09:07:54 -68.0 Dark Up 68.0 143.6 Up 08:52:54 - 09:22:54 3450
Indian Springs 09:07:40 -67.1 Dark Up 70.6 149.6 Up 08:52:40 - 09:22:40 3423
Beatty 09:07:45 -67.5 Dark Up 69.9 147.4 Up 08:52:45 - 09:22:45 3419
Bishop 09:07:51 -68.1 Dark Up 68.8 144.3 Up 08:52:51 - 09:22:51 3412
Henderson 09:07:36 -67.0 Dark Up 71.4 150.6 Up 08:52:36 - 09:22:36 3393
Patrick 09:07:31 -66.6 Dark Up 72.3 152.7 Up 08:52:31 - 09:22:31 3369
DCO 09:07:29 -66.3 Dark Up 72.9 154.3 Up 08:52:29 - 09:22:29 3364
Lone Pine 09:07:49 -68.5 Dark Up 69.6 143.9 Up 08:52:49 - 09:22:49 3346
Kingman/Dolan Springs 09:07:32 -66.9 Dark Up 72.5 151.9 Up 08:52:32 - 09:22:32 3340
Searchlight/Boulder City 09:07:33 -67.3 Dark Up 71.9 149.9 Up 08:52:33 - 09:22:33 3338
Laughlin/Bullhead City 09:07:33 -67.3 Dark Up 72.3 150.4 Up 08:52:33 - 09:22:33 3320
Mohave Valley 09:07:33 -67.4 Dark Up 72.5 149.9 Up 08:52:33 - 09:22:33 3293
Lake Havasu City 09:07:32 -67.5 Dark Up 73.0 150.0 Up 08:52:32 - 09:22:32 3261
Parker 09:07:31 -67.6 Dark Up 73.3 149.5 Up 08:52:31 - 09:22:31 3227
Blythe 09:07:31 -68.1 Dark Up 73.6 147.7 Up 08:52:31 - 09:22:31 3163
CPSLO 09:07:56 -70.8 Dark Up 69.2 135.9 Up 08:52:56 - 09:22:56 3131
Idyllwild 09:07:39 -69.5 Dark Up 72.5 142.1 Up 08:52:39 - 09:22:39 3101
Calipatria 09:07:33 -69.0 Dark Up 73.6 144.1 Up 08:52:33 - 09:22:33 3080
Wildwood 09:07:46 -70.5 Dark Up 71.2 138.1 Up 08:52:46 - 09:22:46 3073
Yuma 09:07:30 -68.6 Dark Up 74.3 145.8 Up 08:52:30 - 09:22:30 3069

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 126154, (2024/01/19 09:06UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3  7.77 106
PPM 100044     10:02:48.9 +21:56:57  5.4  2.69 101
PPM 099985     09:57:42.8 +20:10:14  8.3  0.83 100
PPM 126971     09:57:48.7 +19:28:35  9.5  0.31 100
126154         09:59:04.5 +19:24:32 14.0       101
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:25:54 UT

Marc W. Buie, Southwest Research Institute

RECON