RECON: TNO occultation with 10VR11

Event between 10VR11 and star GA1160:01872393 with event index number of 2108295

Geocentric closest approach at 2027/12/29 07:28:46 UTC

J2000 position of star is 06:03:47.2 +26:05:26
Equinox of date position of star is 06:05:10.7 +26:05:17
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 157 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 36.1 AU from the Sun and 35.1 AU from the Earth.
The TNO is moving 25.7 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 322 seconds.
The 1-sigma cross-track error in the shadow position is 5189 km.
The sky-plane scale is 25454.2 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 17.9 sec chord
Diameter=188.3 km assuming a 30% albedo -- 7.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 10VR11, (2027/12/29 07:29UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:41.3 +07:24:36  0.4 18.80 150
Alnath         05:28:03.8 +28:37:43  1.6  8.69 149
139 Tau        05:59:43.9 +25:57:17  4.7  1.31 156
PPM 095283     06:04:36.8 +25:52:53  8.3  0.29 157
PPM 095301     06:05:10.2 +26:07:23  9.5  0.09 157
10VR11         06:05:31.6 +26:05:15 15.7       157
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 2.8 sigma about the mid-time.
The median site spacing is 29.7 km RECON observability=1.0 and success probability=11.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:28:25 -60.8 Dark Down 62.3 205.3 Up 07:13:25 - 07:43:25 617
Kamloops 07:29:02 -61.8 Dark Down 65.4 176.7 Up 07:14:02 - 07:44:02 331
Kelowna 07:29:00 -62.7 Dark Down 66.2 178.6 Up 07:14:00 - 07:44:00 255
Peachland 07:29:00 -62.8 Dark Down 66.3 177.9 Up 07:14:00 - 07:44:00 242
Summerland 07:29:00 -62.9 Dark Down 66.5 178.1 Up 07:14:00 - 07:44:00 227
Penticton 07:29:00 -63.0 Dark Down 66.6 178.4 Up 07:14:00 - 07:44:00 221
Oliver 07:29:00 -63.3 Dark Down 66.9 178.3 Up 07:14:00 - 07:44:00 185
Anarchist Mountain Observatory 07:28:59 -63.5 Dark Down 67.1 178.8 Up 07:13:59 - 07:43:59 169
Tonasket 07:28:59 -63.8 Dark Down 67.4 178.6 Up 07:13:59 - 07:43:59 137
Okanogan 07:28:59 -64.1 Dark Down 67.7 178.2 Up 07:13:59 - 07:43:59 102
Victoria 07:29:10 -63.1 Dark Down 67.3 169.4 Up 07:14:10 - 07:44:10 94
Brewster 07:29:00 -64.3 Dark Down 68.0 177.7 Up 07:14:00 - 07:44:00 72
Manson/Chelan 07:29:01 -64.5 Dark Down 68.2 176.8 Up 07:14:01 - 07:44:01 48
Wenatchee 07:29:01 -64.9 Dark Down 68.6 176.3 Up 07:14:01 - 07:44:01 -2
Ellensburg 07:29:02 -65.2 Dark Down 69.1 175.7 Up 07:14:02 - 07:44:02 -46
Yakima 07:29:01 -65.6 Dark Down 69.5 175.6 Up 07:14:01 - 07:44:01 -88
Toppenish/White Swan 07:29:01 -65.8 Dark Down 69.7 176.0 Up 07:14:01 - 07:44:01 -110
PNWRO 07:28:56 -66.5 Dark Down 70.1 179.8 Up 07:13:56 - 07:43:56 -137
Goldendale 07:29:02 -66.3 Dark Down 70.2 174.8 Up 07:14:02 - 07:44:02 -170
The Dalles 07:29:03 -66.4 Dark Down 70.4 173.7 Up 07:14:03 - 07:44:03 -196
Maupin 07:29:03 -66.8 Dark Down 70.8 173.9 Up 07:14:03 - 07:44:03 -239
Sisters 07:29:04 -67.5 Dark Down 71.7 172.2 Up 07:14:04 - 07:44:04 -335
Bend 07:29:03 -67.8 Dark Down 71.9 172.8 Up 07:14:03 - 07:44:03 -358
Oregon Observatory 07:29:03 -67.9 Dark Down 72.1 172.4 Up 07:14:03 - 07:44:03 -377
North Lake 07:29:01 -68.6 Dark Down 72.8 173.7 Up 07:14:01 - 07:44:01 -441
Chiloquin 07:29:04 -68.9 Dark Down 73.3 170.5 Up 07:14:04 - 07:44:04 -520
Lakeview 07:28:59 -69.8 Dark Down 73.9 175.1 Up 07:13:59 - 07:43:59 -550
Klamath Falls 07:29:04 -69.3 Dark Down 73.7 170.6 Up 07:14:04 - 07:44:04 -556
Dunrhomin 07:28:10 -72.1 Dark Down 71.9 222.4 Up 07:13:10 - 07:43:10 -565
CU-SBO 07:28:10 -72.4 Dark Down 72.2 222.7 Up 07:13:10 - 07:43:10 -593
Cedarville 07:28:59 -70.4 Dark Down 74.5 175.5 Up 07:13:59 - 07:43:59 -618
Fall River/Burney 07:29:02 -70.5 Dark Down 74.9 171.2 Up 07:14:02 - 07:44:02 -679
Susanville 07:29:00 -71.3 Dark Down 75.6 173.4 Up 07:14:00 - 07:44:00 -741
Gimple 07:29:00 -71.4 Dark Down 75.9 172.5 Up 07:14:00 - 07:44:00 -773
Greenville 07:29:01 -71.4 Dark Down 75.8 172.2 Up 07:14:01 - 07:44:01 -773
Quincy 07:29:01 -71.6 Dark Down 76.0 172.1 Up 07:14:01 - 07:44:01 -795
Portola 07:28:59 -71.9 Dark Down 76.2 173.8 Up 07:13:59 - 07:43:59 -805
Reno 07:28:57 -72.3 Dark Down 76.5 176.2 Up 07:13:57 - 07:43:57 -828
Carson City 07:28:57 -72.7 Dark Down 76.9 176.1 Up 07:13:57 - 07:43:57 -866
Yerington 07:28:54 -73.0 Dark Down 77.1 178.6 Up 07:13:54 - 07:43:54 -882
Gardnerville 07:28:56 -72.9 Dark Down 77.1 176.3 Up 07:13:56 - 07:43:56 -892
Hawthorne 07:28:53 -73.6 Dark Down 77.6 180.7 Up 07:13:53 - 07:43:53 -927
Tonopah 07:28:47 -74.5 Dark Down 78.0 186.8 Up 07:13:47 - 07:43:47 -964
Lee Vining 07:28:54 -74.0 Dark Down 78.1 178.7 Up 07:13:54 - 07:43:54 -993
Bishop 07:28:51 -74.8 Dark Down 78.7 181.9 Up 07:13:51 - 07:43:51 -1051
Beatty 07:28:45 -75.7 Dark Down 79.1 189.6 Up 07:13:45 - 07:43:45 -1084
Indian Springs 07:28:42 -76.2 Dark Down 79.2 194.9 Up 07:13:42 - 07:43:42 -1108
Henderson 07:28:39 -76.9 Dark Down 79.5 199.0 Up 07:13:39 - 07:43:39 -1158
Patrick 07:28:34 -77.7 Dark Down 79.8 205.5 Up 07:13:34 - 07:43:34 -1212
Kingman/Dolan Springs 07:28:35 -77.9 Dark Down 80.1 205.1 Up 07:13:35 - 07:43:35 -1238
Laughlin/Bullhead City 07:28:37 -77.8 Dark Down 80.2 202.6 Up 07:13:37 - 07:43:37 -1247
Mohave Valley 07:28:37 -78.1 Dark Down 80.5 203.3 Up 07:13:37 - 07:43:37 -1277
Lake Havasu City 07:28:35 -78.5 Dark Down 80.8 205.6 Up 07:13:35 - 07:43:35 -1317
Parker 07:28:35 -78.9 Dark Down 81.1 206.7 Up 07:13:35 - 07:43:35 -1355
George/Scottsdale 07:28:27 -79.5 Dark Down 80.3 219.7 Up 07:13:27 - 07:43:27 -1368
Wildwood 07:28:51 -77.6 Dark Down 82.0 181.3 Up 07:13:51 - 07:43:51 -1408
Idyllwild 07:28:43 -78.6 Dark Down 82.2 193.7 Up 07:13:43 - 07:43:43 -1428
Calipatria 07:28:39 -79.6 Dark Down 82.4 202.5 Up 07:13:39 - 07:43:39 -1481
Yuma 07:28:35 -80.2 Dark Down 82.5 209.5 Up 07:13:35 - 07:43:35 -1517

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 10VR11, (2027/12/29 07:29UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.80 150
Alnath         05:26:17.6 +28:36:23  1.6  8.69 149
139 Tau        05:57:59.6 +25:57:14  4.7  1.31 156
PPM 095283     06:02:52.6 +25:53:02  8.3  0.29 157
PPM 095301     06:03:25.8 +26:07:34  9.5  0.09 157
10VR11         06:03:47.2 +26:05:26 15.7       157
Positions are for J2000

Event circumstances last updated at 2022/05/19 23:08:44 UT

Marc W. Buie, Southwest Research Institute

RECON