RECON: TNO occultation with 15789

Event between (15789) 93SC and star GA1120:00416350 with event index number of 1773143

Geocentric closest approach at 2027/11/06 10:33:07 UTC

J2000 position of star is 03:28:04.2 +23:37:06
Equinox of date position of star is 03:29:23.3 +23:41:41
Stellar brightness G=13.5, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 101 degrees from the moon. Moon is 51% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 39.9 AU from the Sun and 39.0 AU from the Earth.
The TNO is moving 24.9 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 482 seconds.
The 1-sigma cross-track error in the shadow position is 4564 km.
The sky-plane scale is 28252.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 9.6 sec chord
Diameter=97.9 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15789, (2027/11/06 10:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.3 +16:33:48  0.8 17.43 115
44Zet Per      03:55:53.4 +31:57:50  2.8 10.07 108
64 Ari         03:25:57.5 +24:49:15  5.5  1.40 100
66 Ari         03:30:04.6 +22:53:54  7.2  0.82 100
PPM 092520     03:29:28.5 +24:16:40  8.9  0.57 101
PPM 092541     03:30:59.4 +23:42:11 10.1  0.29 101
15789          03:29:42.7 +23:42:48 13.5       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 1.9 sigma about the mid-time.
The median site spacing is 30.0 km RECON observability=1.0 and success probability=12.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:30:48 -33.3 Dark Down 45.5 247.9 Up 10:15:48 - 10:45:48 1840
Kamloops 10:31:20 -42.0 Dark Down 53.9 233.0 Up 10:16:20 - 10:46:20 1630
Kelowna 10:31:17 -41.9 Dark Down 54.0 235.0 Up 10:16:17 - 10:46:17 1549
Peachland 10:31:17 -42.1 Dark Down 54.2 234.8 Up 10:16:17 - 10:46:17 1537
Summerland 10:31:17 -42.1 Dark Down 54.2 235.1 Up 10:16:17 - 10:46:17 1522
Penticton 10:31:17 -42.1 Dark Down 54.2 235.3 Up 10:16:17 - 10:46:17 1515
Oliver 10:31:16 -42.3 Dark Down 54.4 235.7 Up 10:16:16 - 10:46:16 1479
Anarchist Mountain Observatory 10:31:16 -42.2 Dark Down 54.4 236.1 Up 10:16:16 - 10:46:16 1462
Tonasket 10:31:16 -42.4 Dark Down 54.6 236.4 Up 10:16:16 - 10:46:16 1430
Victoria 10:31:26 -44.8 Dark Down 56.8 231.4 Up 10:16:26 - 10:46:26 1410
Okanogan 10:31:16 -42.7 Dark Down 54.9 236.6 Up 10:16:16 - 10:46:16 1395
Brewster 10:31:16 -42.9 Dark Down 55.1 236.7 Up 10:16:16 - 10:46:16 1367
Manson/Chelan 10:31:17 -43.2 Dark Down 55.4 236.5 Up 10:16:17 - 10:46:17 1344
Wenatchee 10:31:17 -43.6 Dark Down 55.8 236.8 Up 10:16:17 - 10:46:17 1295
Ellensburg 10:31:17 -43.9 Dark Down 56.1 237.0 Up 10:16:17 - 10:46:17 1252
Yakima 10:31:17 -44.1 Dark Down 56.4 237.5 Up 10:16:17 - 10:46:17 1209
Toppenish/White Swan 10:31:16 -44.1 Dark Down 56.4 238.0 Up 10:16:16 - 10:46:16 1187
PNWRO 10:31:12 -43.3 Dark Down 55.7 240.3 Up 10:16:12 - 10:46:12 1150
Goldendale 10:31:17 -44.6 Dark Down 56.9 238.2 Up 10:16:17 - 10:46:17 1129
The Dalles 10:31:18 -44.9 Dark Down 57.3 238.0 Up 10:16:18 - 10:46:18 1105
Maupin 10:31:17 -45.1 Dark Down 57.4 238.7 Up 10:16:17 - 10:46:17 1061
Sisters 10:31:18 -45.8 Dark Down 58.2 239.3 Up 10:16:18 - 10:46:18 968
Bend 10:31:17 -45.7 Dark Down 58.1 239.9 Up 10:16:17 - 10:46:17 943
Oregon Observatory 10:31:17 -45.9 Dark Down 58.3 240.0 Up 10:16:17 - 10:46:17 924
North Lake 10:31:15 -45.8 Dark Down 58.3 241.6 Up 10:16:15 - 10:46:15 856
Chiloquin 10:31:18 -46.7 Dark Down 59.2 241.4 Up 10:16:18 - 10:46:18 784
Klamath Falls 10:31:17 -46.8 Dark Down 59.3 242.0 Up 10:16:17 - 10:46:17 747
Lakeview 10:31:13 -45.9 Dark Down 58.4 243.8 Up 10:16:13 - 10:46:13 744
Cedarville 10:31:12 -46.0 Dark Down 58.6 245.0 Up 10:16:12 - 10:46:12 674
Dunrhomin 10:30:30 -35.6 Dark Down 48.2 260.8 Up 10:15:30 - 10:45:30 626
Fall River/Burney 10:31:16 -47.1 Dark Down 59.6 244.2 Up 10:16:16 - 10:46:16 621
CU-SBO 10:30:30 -35.7 Dark Down 48.3 261.0 Up 10:15:30 - 10:45:30 598
Susanville 10:31:13 -46.8 Dark Down 59.4 246.1 Up 10:16:13 - 10:46:13 553
Greenville 10:31:14 -47.1 Dark Down 59.7 246.2 Up 10:16:14 - 10:46:14 523
Gimple 10:31:14 -47.0 Dark Down 59.6 246.3 Up 10:16:14 - 10:46:14 523
Quincy 10:31:14 -47.2 Dark Down 59.8 246.5 Up 10:16:14 - 10:46:14 501
Portola 10:31:12 -46.9 Dark Down 59.5 247.2 Up 10:16:12 - 10:46:12 488
Reno 10:31:10 -46.5 Dark Down 59.1 248.4 Up 10:16:10 - 10:46:10 460
Carson City 10:31:10 -46.6 Dark Down 59.2 249.0 Up 10:16:10 - 10:46:10 421
Yerington 10:31:08 -46.2 Dark Down 58.9 249.9 Up 10:16:08 - 10:46:08 401
Gardnerville 10:31:10 -46.7 Dark Down 59.3 249.4 Up 10:16:10 - 10:46:10 395
Hawthorne 10:31:06 -46.0 Dark Down 58.6 251.2 Up 10:16:06 - 10:46:06 352
Tonopah 10:31:02 -45.1 Dark Down 57.7 253.3 Up 10:16:02 - 10:46:02 305
Lee Vining 10:31:07 -46.5 Dark Down 59.2 251.6 Up 10:16:07 - 10:46:07 290
Bishop 10:31:05 -46.2 Dark Down 58.8 253.3 Up 10:16:05 - 10:46:05 226
Beatty 10:30:59 -45.1 Dark Down 57.7 255.5 Up 10:15:59 - 10:45:59 180
Indian Springs 10:30:56 -44.3 Dark Down 56.9 257.0 Up 10:15:56 - 10:45:56 149
Henderson 10:30:54 -43.9 Dark Down 56.5 258.4 Up 10:15:54 - 10:45:54 93
Patrick 10:30:50 -43.2 Dark Down 55.7 260.2 Up 10:15:50 - 10:45:50 30
Kingman/Dolan Springs 10:30:50 -43.4 Dark Down 55.9 260.3 Up 10:15:50 - 10:45:50 5
Laughlin/Bullhead City 10:30:52 -43.8 Dark Down 56.4 260.0 Up 10:15:52 - 10:45:52 0
Mohave Valley 10:30:52 -43.8 Dark Down 56.4 260.4 Up 10:15:52 - 10:45:52 -30
Lake Havasu City 10:30:51 -43.7 Dark Down 56.3 261.2 Up 10:15:51 - 10:45:51 -73
Parker 10:30:50 -43.8 Dark Down 56.3 261.7 Up 10:15:50 - 10:45:50 -111
Wildwood 10:31:04 -47.2 Dark Down 59.8 258.4 Up 10:16:04 - 10:46:04 -133
George/Scottsdale 10:30:43 -41.9 Dark Down 54.4 264.0 Up 10:15:43 - 10:45:43 -143
Idyllwild 10:30:58 -45.8 Dark Down 58.3 260.5 Up 10:15:58 - 10:45:58 -167
Calipatria 10:30:54 -45.0 Dark Down 57.4 262.4 Up 10:15:54 - 10:45:54 -229
Yuma 10:30:51 -44.3 Dark Down 56.8 263.6 Up 10:15:51 - 10:45:51 -272

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 15789, (2027/11/06 10:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 17.43 115
44Zet Per      03:54:07.9 +31:53:01  2.8 10.07 108
64 Ari         03:24:18.5 +24:43:25  5.5  1.40 100
66 Ari         03:28:26.6 +22:48:13  7.2  0.82 100
PPM 092520     03:27:49.6 +24:10:58  8.9  0.57 101
PPM 092541     03:29:20.9 +23:36:32 10.1  0.29 101
15789          03:28:04.2 +23:37:06 13.5       101
Positions are for J2000

Event circumstances last updated at 2022/05/17 23:01:36 UT

Marc W. Buie, Southwest Research Institute

RECON