RECON: TNO occultation with 12VB116

Event between 12VB116 and star GA0880:01256943 with event index number of 2162297

Geocentric closest approach at 2028/02/12 06:18:06 UTC

J2000 position of star is 06:23:34.3 -00:08:08
Equinox of date position of star is 06:24:43.1 -00:08:55
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 70 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 46.5 AU from the Sun and 45.9 AU from the Earth.
The TNO is moving 18.7 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 328 seconds.
The 1-sigma cross-track error in the shadow position is 4437 km.
The sky-plane scale is 33254.2 km/arcsec.

The TNO has an absolute magnitude Hv=5.2
Diameter=562.4 km assuming a 5% albedo -- 30.0 sec chord
Diameter=229.6 km assuming a 30% albedo -- 12.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 12VB116, (2028/02/12 06:18UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:41.7 +07:24:36  0.4 10.35  77
34Del Ori      05:33:26.7 -00:16:50  2.2 12.89  83
PPM 176254     06:26:42.7 -00:57:54  6.5  0.92  70
PPM 176242     06:25:11.0 -00:02:03  7.5  0.13  70
12VB116        06:25:00.7 -00:09:07 15.0        70
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 2.7 sigma about the mid-time.
The median site spacing is 10.8 km RECON observability=1.0 and success probability=8.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:18:31 -49.9 Dark Up 30.2 221.2 Up 06:03:31 - 06:33:31 2161
Kelowna 06:19:15 -47.3 Dark Up 36.8 207.0 Up 06:04:15 - 06:34:15 1678
Kamloops 06:19:15 -46.3 Dark Up 36.3 205.6 Up 06:04:15 - 06:34:15 1677
Peachland 06:19:15 -47.2 Dark Up 37.0 206.6 Up 06:04:15 - 06:34:15 1662
Penticton 06:19:15 -47.5 Dark Up 37.1 207.0 Up 06:04:15 - 06:34:15 1661
Summerland 06:19:15 -47.4 Dark Up 37.1 206.8 Up 06:04:15 - 06:34:15 1659
Dunrhomin 06:17:43 -60.8 Dark Up 38.5 227.4 Up 06:02:43 - 06:32:43 1649
CU-SBO 06:17:41 -60.9 Dark Up 38.7 227.5 Up 06:02:41 - 06:32:41 1632
Oliver 06:19:02 -47.7 Dark Up 37.4 207.0 Up 06:04:02 - 06:34:02 1627
Anarchist Mountain Observatory 06:18:59 -47.9 Dark Up 37.5 207.3 Up 06:03:59 - 06:33:59 1625
Tonasket 06:19:00 -48.1 Dark Up 37.8 207.3 Up 06:04:00 - 06:34:00 1607
Okanogan 06:18:59 -48.3 Dark Up 38.2 207.3 Up 06:03:59 - 06:33:59 1585
Brewster 06:18:58 -48.4 Dark Up 38.5 207.1 Up 06:03:58 - 06:33:58 1565
Manson/Chelan 06:18:59 -48.3 Dark Up 38.8 206.7 Up 06:03:59 - 06:33:59 1541
Wenatchee 06:18:59 -48.6 Dark Up 39.2 206.7 Up 06:03:59 - 06:33:59 1511
PNWRO 06:18:48 -50.3 Dark Up 40.0 209.0 Up 06:03:48 - 06:33:48 1486
Ellensburg 06:18:57 -48.8 Dark Up 39.7 206.6 Up 06:03:57 - 06:33:57 1482
Victoria 06:19:15 -46.4 Dark Up 39.1 202.6 Up 06:04:15 - 06:34:15 1466
Yakima 06:18:57 -49.0 Dark Up 40.1 206.7 Up 06:03:57 - 06:33:57 1459
Toppenish/White Swan 06:18:54 -49.3 Dark Up 40.2 207.0 Up 06:03:54 - 06:33:54 1454
Goldendale 06:18:55 -49.4 Dark Up 40.8 206.7 Up 06:03:55 - 06:33:55 1409
The Dalles 06:18:55 -49.4 Dark Up 41.1 206.3 Up 06:03:55 - 06:33:55 1383
Maupin 06:18:54 -49.7 Dark Up 41.5 206.6 Up 06:03:54 - 06:33:54 1364
Sisters 06:18:52 -50.0 Dark Up 42.4 206.3 Up 06:03:52 - 06:33:52 1296
Bend 06:18:51 -50.3 Dark Up 42.6 206.7 Up 06:03:51 - 06:33:51 1292
Oregon Observatory 06:18:50 -50.4 Dark Up 42.8 206.6 Up 06:03:50 - 06:33:50 1277
North Lake 06:18:46 -51.1 Dark Up 43.2 207.6 Up 06:03:46 - 06:33:46 1260
Lakeview 06:18:41 -52.0 Dark Up 43.9 208.7 Up 06:03:41 - 06:33:41 1218
Cedarville 06:18:39 -52.6 Dark Up 44.4 209.3 Up 06:03:39 - 06:33:39 1185
Chiloquin 06:18:48 -50.9 Dark Up 44.1 206.6 Up 06:03:48 - 06:33:48 1184
Klamath Falls 06:18:47 -51.2 Dark Up 44.4 206.9 Up 06:03:47 - 06:33:47 1167
Fall River/Burney 06:18:41 -52.1 Dark Up 45.3 207.9 Up 06:03:41 - 06:33:41 1109
Susanville 06:18:37 -53.0 Dark Up 45.6 209.2 Up 06:03:37 - 06:33:37 1098
Tonopah 06:18:16 -56.4 Dark Up 46.2 214.8 Up 06:03:16 - 06:33:16 1083
Reno 06:18:30 -54.0 Dark Up 46.0 210.7 Up 06:03:30 - 06:33:30 1076
Gimple 06:18:36 -53.0 Dark Up 45.9 209.0 Up 06:03:36 - 06:33:36 1072
Greenville 06:18:37 -52.9 Dark Up 45.9 208.9 Up 06:03:37 - 06:33:37 1069
Portola 06:18:35 -53.4 Dark Up 46.0 209.7 Up 06:03:35 - 06:33:35 1067
Yerington 06:18:27 -54.7 Dark Up 46.2 211.8 Up 06:03:27 - 06:33:27 1066
Hawthorne 06:18:23 -55.3 Dark Up 46.4 212.8 Up 06:03:23 - 06:33:23 1057
Quincy 06:18:36 -53.1 Dark Up 46.1 209.0 Up 06:03:36 - 06:33:36 1057
Carson City 06:18:29 -54.2 Dark Up 46.3 210.9 Up 06:03:29 - 06:33:29 1054
Indian Springs 06:18:05 -58.3 Dark Up 46.7 217.7 Up 06:03:05 - 06:33:05 1046
Patrick 06:17:53 -60.2 Dark Up 46.7 220.7 Up 06:02:53 - 06:32:53 1041
Gardnerville 06:18:29 -54.4 Dark Up 46.5 211.1 Up 06:03:29 - 06:33:29 1040
Henderson 06:18:01 -59.1 Dark Up 46.8 218.9 Up 06:03:01 - 06:33:01 1038
Beatty 06:18:11 -57.4 Dark Up 46.9 216.1 Up 06:03:11 - 06:33:11 1025
Kingman/Dolan Springs 06:17:54 -60.2 Dark Up 47.0 220.6 Up 06:02:54 - 06:32:54 1019
George/Scottsdale 06:17:40 -62.5 Dark Up 46.9 224.3 Up 06:02:40 - 06:32:40 1008
Lee Vining 06:18:23 -55.3 Dark Up 47.1 212.4 Up 06:03:23 - 06:33:23 1002
Laughlin/Bullhead City 06:17:57 -59.9 Dark Up 47.2 220.0 Up 06:02:57 - 06:32:57 997
Bishop 06:18:18 -56.1 Dark Up 47.3 213.7 Up 06:03:18 - 06:33:18 991
Mohave Valley 06:17:54 -60.0 Dark Up 47.5 220.2 Up 06:02:54 - 06:32:54 979
Lake Havasu City 06:17:52 -60.4 Dark Up 47.6 220.7 Up 06:02:52 - 06:32:52 962
Parker 06:17:51 -60.7 Dark Up 47.9 221.0 Up 06:02:51 - 06:32:51 940
Yuma 06:17:48 -61.3 Dark Up 49.2 221.7 Up 06:02:48 - 06:32:48 827
Calipatria 06:17:52 -60.5 Dark Up 49.3 220.2 Up 06:02:52 - 06:32:52 820
Idyllwild 06:17:59 -59.3 Dark Up 49.5 218.3 Up 06:02:59 - 06:32:59 815
Wildwood 06:18:07 -57.8 Dark Up 50.1 215.5 Up 06:03:07 - 06:33:07 762

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 12VB116, (2028/02/12 06:18UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 10.35  77
34Del Ori      05:32:00.4 -00:17:57  2.2 12.89  83
PPM 176254     06:25:16.9 -00:56:50  6.5  0.92  70
PPM 176242     06:23:44.6 -00:01:03  7.5  0.13  70
12VB116        06:23:34.3 -00:08:08 15.0        70
Positions are for J2000

Event circumstances last updated at 2022/05/22 23:05:39 UT

Marc W. Buie, Southwest Research Institute

RECON