RECON: TNO occultation with 456826

Event between (456826) 07TH422 and star GA1140:02402867 with event index number of 2288201

Geocentric closest approach at 2027/02/02 05:04:35 UTC

J2000 position of star is 06:38:10.4 +25:00:22
Equinox of date position of star is 06:39:32.7 +24:59:07
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 166 degrees from the moon. Moon is 17% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 31.0 AU from the Sun and 30.1 AU from the Earth.
The TNO is moving 20.2 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 556 seconds.
The 1-sigma cross-track error in the shadow position is 5340 km.
The sky-plane scale is 21852.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 9.1 sec chord
Diameter=75.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 456826, (2027/02/02 05:05UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:58.4 +27:57:31  1.1 15.30 152
Alhena         06:39:16.6 +16:22:26  1.9  8.61 162
PPM 096264     06:39:06.9 +24:33:57  6.5  0.45 166
PPM 096285     06:39:42.2 +24:48:32  9.3  0.17 166
456826         06:39:50.3 +24:58:50 15.5       166
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 30.2 km RECON observability=1.0 and success probability=7.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:04:51 -46.2 Dark Down 62.8 185.8 Up 04:49:51 - 05:19:51 8468
Kamloops 05:05:39 -39.5 Dark Down 62.9 157.0 Up 04:50:39 - 05:20:39 8185
Kelowna 05:05:37 -40.3 Dark Down 63.9 158.1 Up 04:50:37 - 05:20:37 8108
Peachland 05:05:37 -40.2 Dark Down 63.9 157.5 Up 04:50:37 - 05:20:37 8095
Summerland 05:05:37 -40.3 Dark Down 64.1 157.5 Up 04:50:37 - 05:20:37 8081
Penticton 05:05:36 -40.4 Dark Down 64.1 157.7 Up 04:50:36 - 05:20:36 8075
Oliver 05:05:36 -40.5 Dark Down 64.5 157.4 Up 04:50:36 - 05:20:36 8039
Anarchist Mountain Observatory 05:05:36 -40.7 Dark Down 64.7 157.7 Up 04:50:36 - 05:20:36 8023
Tonasket 05:05:36 -40.8 Dark Down 64.9 157.3 Up 04:50:36 - 05:20:36 7991
Okanogan 05:05:36 -40.8 Dark Down 65.2 156.7 Up 04:50:36 - 05:20:36 7955
Victoria 05:05:49 -38.5 Dark Down 63.9 149.3 Up 04:50:49 - 05:20:49 7948
Brewster 05:05:37 -40.8 Dark Down 65.4 156.0 Up 04:50:37 - 05:20:37 7926
Manson/Chelan 05:05:38 -40.7 Dark Down 65.5 155.1 Up 04:50:38 - 05:20:38 7902
Wenatchee 05:05:39 -40.8 Dark Down 65.9 154.3 Up 04:50:39 - 05:20:39 7852
Ellensburg 05:05:39 -40.8 Dark Down 66.2 153.4 Up 04:50:39 - 05:20:39 7807
Yakima 05:05:40 -40.9 Dark Down 66.5 153.0 Up 04:50:40 - 05:20:40 7765
Toppenish/White Swan 05:05:39 -41.1 Dark Down 66.8 153.1 Up 04:50:39 - 05:20:39 7744
PNWRO 05:05:33 -42.2 Dark Down 67.6 156.0 Up 04:50:33 - 05:20:33 7716
Goldendale 05:05:41 -41.0 Dark Down 67.1 151.6 Up 04:50:41 - 05:20:41 7683
The Dalles 05:05:41 -40.8 Dark Down 67.2 150.5 Up 04:50:41 - 05:20:41 7657
Maupin 05:05:41 -41.1 Dark Down 67.6 150.3 Up 04:50:41 - 05:20:41 7614
Sisters 05:05:44 -41.0 Dark Down 68.2 148.1 Up 04:50:44 - 05:20:44 7518
Bend 05:05:42 -41.3 Dark Down 68.5 148.3 Up 04:50:42 - 05:20:42 7495
Oregon Observatory 05:05:43 -41.2 Dark Down 68.6 147.8 Up 04:50:43 - 05:20:43 7476
North Lake 05:05:41 -41.8 Dark Down 69.3 148.2 Up 04:50:41 - 05:20:41 7412
Chiloquin 05:05:44 -41.3 Dark Down 69.5 145.0 Up 04:50:44 - 05:20:44 7333
Lakeview 05:05:38 -42.5 Dark Down 70.4 147.9 Up 04:50:38 - 05:20:38 7303
Klamath Falls 05:05:44 -41.5 Dark Down 69.8 144.6 Up 04:50:44 - 05:20:44 7297
Dunrhomin 05:04:35 -53.5 Dark Down 74.5 192.3 Up 04:49:35 - 05:19:35 7283
CU-SBO 05:04:35 -53.6 Dark Down 74.7 192.2 Up 04:49:35 - 05:19:35 7255
Cedarville 05:05:37 -42.8 Dark Down 71.1 147.3 Up 04:50:37 - 05:20:37 7234
Fall River/Burney 05:05:42 -42.1 Dark Down 71.0 143.6 Up 04:50:42 - 05:20:42 7174
Susanville 05:05:38 -42.8 Dark Down 71.8 144.3 Up 04:50:38 - 05:20:38 7112
Gimple 05:05:39 -42.7 Dark Down 71.9 143.2 Up 04:50:39 - 05:20:39 7080
Greenville 05:05:40 -42.6 Dark Down 71.9 143.0 Up 04:50:40 - 05:20:40 7080
Quincy 05:05:40 -42.7 Dark Down 72.0 142.7 Up 04:50:40 - 05:20:40 7058
Portola 05:05:38 -43.1 Dark Down 72.4 143.6 Up 04:50:38 - 05:20:38 7048
Reno 05:05:35 -43.6 Dark Down 72.9 144.8 Up 04:50:35 - 05:20:35 7024
Carson City 05:05:35 -43.7 Dark Down 73.2 144.2 Up 04:50:35 - 05:20:35 6986
Yerington 05:05:32 -44.2 Dark Down 73.6 145.5 Up 04:50:32 - 05:20:32 6970
Gardnerville 05:05:35 -43.8 Dark Down 73.4 143.9 Up 04:50:35 - 05:20:35 6960
Hawthorne 05:05:30 -44.8 Dark Down 74.2 146.1 Up 04:50:30 - 05:20:30 6925
Tonopah 05:05:23 -45.9 Dark Down 75.2 149.5 Up 04:50:23 - 05:20:23 6887
Lee Vining 05:05:31 -44.5 Dark Down 74.5 143.6 Up 04:50:31 - 05:20:31 6859
Bishop 05:05:28 -45.2 Dark Down 75.3 144.4 Up 04:50:28 - 05:20:28 6801
Beatty 05:05:21 -46.6 Dark Down 76.4 148.6 Up 04:50:21 - 05:20:21 6767
Indian Springs 05:05:16 -47.5 Dark Down 77.1 151.6 Up 04:50:16 - 05:20:16 6743
Henderson 05:05:13 -48.2 Dark Down 77.8 153.1 Up 04:50:13 - 05:20:13 6693
Patrick 05:05:08 -49.2 Dark Down 78.8 156.4 Up 04:50:08 - 05:20:08 6638
Kingman/Dolan Springs 05:05:09 -49.1 Dark Down 78.9 155.1 Up 04:50:09 - 05:20:09 6612
Laughlin/Bullhead City 05:05:11 -48.7 Dark Down 78.7 152.8 Up 04:50:11 - 05:20:11 6603
Mohave Valley 05:05:11 -48.8 Dark Down 79.0 152.2 Up 04:50:11 - 05:20:11 6573
Lake Havasu City 05:05:10 -49.1 Dark Down 79.4 152.3 Up 04:50:10 - 05:20:10 6533
Parker 05:05:09 -49.2 Dark Down 79.7 151.5 Up 04:50:09 - 05:20:09 6495
George/Scottsdale 05:04:58 -51.2 Dark Down 80.9 162.6 Up 04:49:58 - 05:19:58 6481
Wildwood 05:05:28 -45.8 Dark Down 77.7 134.9 Up 04:50:28 - 05:20:28 6443
Idyllwild 05:05:20 -47.4 Dark Down 79.0 140.3 Up 04:50:20 - 05:20:20 6423
Calipatria 05:05:14 -48.5 Dark Down 80.1 143.0 Up 04:50:14 - 05:20:14 6369
Yuma 05:05:08 -49.3 Dark Down 80.8 145.5 Up 04:50:08 - 05:20:08 6333

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 456826, (2027/02/02 05:05UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 15.30 152
Alhena         06:37:42.8 +16:23:57  1.9  8.61 162
PPM 096264     06:37:27.2 +24:35:27  6.5  0.45 166
PPM 096285     06:38:02.4 +24:50:03  9.3  0.17 166
456826         06:38:10.4 +25:00:22 15.5       166
Positions are for J2000

Event circumstances last updated at 2022/04/27 23:05:37 UT

Marc W. Buie, Southwest Research Institute

RECON