RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star GA1360:03262277 with event index number of 233103

Geocentric closest approach at 2019/12/26 13:38:23 UTC

J2000 position of star is 05:30:02.0 +46:31:13
Equinox of date position of star is 05:31:28.9 +46:32:02
Stellar brightness G=15.4, use SENSEUP=128
Star is 153 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 15.4 AU from the Sun and 14.6 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 7.7 arcsec/hr.
The 1-sigma error in the time of the event is 639 seconds.
The 1-sigma cross-track error in the shadow position is 4801 km.
The sky-plane scale is 10554.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.1 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 341275, (2019/12/26 13:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.2 +16:32:52  0.8 32.05 151
34Bet Aur      06:00:59.7 +44:56:50  1.9  5.38 157
PPM 048270     05:37:46.6 +47:43:35  6.1  1.60 153
PPM 048157     05:31:24.2 +46:35:09  8.4  0.06 153
341275         05:31:31.3 +46:32:04 15.4       153
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 1.4 sigma about the mid-time.
The median site spacing is 13.4 km RECON observability=0.8 and success probability=6.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 13:34:18 -8.9 NT Down 16.4 317.9 Really Low 13:19:18 - 13:49:18 -145
SwRI 13:34:18 -8.9 NT Down 16.3 317.8 Really Low 13:19:18 - 13:49:18 -157
Kelowna 13:34:43 -21.3 Dark Down 30.3 307.7 Up 13:19:43 - 13:49:43 -381
Penticton 13:34:42 -21.3 Dark Down 30.2 307.7 Up 13:19:42 - 13:49:42 -414
Summerland 13:34:43 -21.4 Dark Down 30.3 307.6 Up 13:19:43 - 13:49:43 -415
Okanagan Falls 13:34:42 -21.3 Dark Down 30.1 307.8 Up 13:19:42 - 13:49:42 -427
Oliver 13:34:41 -21.3 Dark Down 29.9 307.9 Low 13:19:41 - 13:49:41 -437
Anarchist Mountain Observatory 13:34:41 -21.1 Dark Down 29.7 308.1 Low 13:19:41 - 13:49:41 -437
Oroville 13:34:41 -21.1 Dark Down 29.7 308.1 Low 13:19:41 - 13:49:41 -446
Tonasket 13:34:40 -21.1 Dark Down 29.6 308.2 Low 13:19:40 - 13:49:40 -461
Okanogan 13:34:39 -21.1 Dark Down 29.5 308.2 Low 13:19:39 - 13:49:39 -491
Brewster 13:34:38 -21.2 Dark Down 29.4 308.2 Low 13:19:38 - 13:49:38 -520
Manson/Chelan 13:34:38 -21.4 Dark Down 29.5 308.2 Low 13:19:38 - 13:49:38 -554
Entiat 13:34:37 -21.4 Dark Down 29.4 308.2 Low 13:19:37 - 13:49:37 -572
Wenatchee 13:34:36 -21.4 Dark Down 29.3 308.3 Low 13:19:36 - 13:49:36 -594
Pasco 13:34:33 -20.4 Dark Down 27.9 309.4 Low 13:19:33 - 13:49:33 -605
PNWRO 13:34:32 -20.2 Dark Down 27.6 309.6 Low 13:19:32 - 13:49:32 -609
Ellensburg 13:34:35 -21.5 Dark Down 29.1 308.3 Low 13:19:35 - 13:49:35 -634
George/Umatilla 13:34:32 -20.5 Dark Down 27.8 309.4 Low 13:19:32 - 13:49:32 -640
Yakima 13:34:34 -21.4 Dark Down 28.9 308.5 Low 13:19:34 - 13:49:34 -663
Toppenish/White Swan 13:34:33 -21.3 Dark Down 28.7 308.7 Low 13:19:33 - 13:49:33 -668
Goldendale 13:34:32 -21.4 Dark Down 28.6 308.7 Low 13:19:32 - 13:49:32 -729
The Dalles 13:34:31 -21.6 Dark Down 28.6 308.6 Low 13:19:31 - 13:49:31 -765
Maupin 13:34:30 -21.5 Dark Down 28.3 308.9 Low 13:19:30 - 13:49:30 -788
Madras/Culver 13:34:29 -21.4 Dark Down 28.0 309.1 Low 13:19:29 - 13:49:29 -829
Redmond 13:34:28 -21.4 Dark Down 27.8 309.2 Low 13:19:28 - 13:49:28 -856
Sisters 13:34:28 -21.7 Dark Down 28.0 309.0 Low 13:19:28 - 13:49:28 -878
Bend 13:34:27 -21.4 Dark Down 27.7 309.2 Low 13:19:27 - 13:49:27 -879
Oregon Observatory 13:34:27 -21.5 Dark Down 27.7 309.2 Low 13:19:27 - 13:49:27 -899
North Lake 13:34:25 -21.0 Dark Down 27.0 309.7 Low 13:19:25 - 13:49:25 -913
La Pine/Gilchrist 13:34:26 -21.5 Dark Down 27.6 309.3 Low 13:19:26 - 13:49:26 -917
Paisley 13:34:24 -20.6 Dark Down 26.4 310.1 Low 13:19:24 - 13:49:24 -930
Lakeview 13:34:22 -20.3 Dark Down 26.0 310.4 Low 13:19:22 - 13:49:22 -954
DCO 13:34:04 -13.0 AT Down 17.1 315.4 Really Low 13:19:04 - 13:49:04 -985
Cedarville 13:34:20 -20.1 Dark Down 25.5 310.7 Low 13:19:20 - 13:49:20 -990
Patrick 13:34:05 -13.6 AT Down 17.7 315.0 Really Low 13:19:05 - 13:49:05 -1012
Chiloquin 13:34:24 -21.5 Dark Down 27.1 309.5 Low 13:19:24 - 13:49:24 -1017
Klamath Falls 13:34:23 -21.4 Dark Down 26.8 309.7 Low 13:19:23 - 13:49:23 -1036
Tulelake 13:34:22 -21.1 Dark Down 26.5 309.9 Low 13:19:22 - 13:49:22 -1038
Kingman/Dolan Springs 13:34:05 -13.7 AT Down 17.7 315.0 Really Low 13:19:05 - 13:49:05 -1040
Henderson 13:34:07 -14.7 AT Down 18.8 314.4 Really Low 13:19:07 - 13:49:07 -1044
Tonopah 13:34:11 -17.0 AT Down 21.5 313.0 Low 13:19:11 - 13:49:11 -1049
Indian Springs 13:34:08 -15.4 AT Down 19.6 314.0 Really Low 13:19:08 - 13:49:08 -1053
Laughlin/Bullhead City 13:34:05 -14.1 AT Down 18.0 314.8 Really Low 13:19:05 - 13:49:05 -1076
Searchlight/Boulder City 13:34:05 -14.5 AT Down 18.4 314.6 Really Low 13:19:05 - 13:49:05 -1079
Mohave Valley 13:34:04 -14.0 AT Down 17.8 314.9 Really Low 13:19:04 - 13:49:04 -1095
Fall River/Burney 13:34:20 -20.8 Dark Down 25.9 310.3 Low 13:19:20 - 13:49:20 -1098
Susanville 13:34:18 -20.1 Dark Down 25.0 310.9 Low 13:19:18 - 13:49:18 -1098
Beatty 13:34:09 -16.3 AT Down 20.4 313.5 Low 13:19:09 - 13:49:09 -1101
Lake Havasu City 13:34:03 -13.7 AT Down 17.4 315.0 Really Low 13:19:03 - 13:49:03 -1106
Hawthorne 13:34:13 -18.2 Dark Down 22.6 312.3 Low 13:19:13 - 13:49:13 -1107
Yerington 13:34:14 -18.7 Dark Down 23.2 311.9 Low 13:19:14 - 13:49:14 -1107
Reno 13:34:15 -19.3 Dark Down 24.0 311.5 Low 13:19:15 - 13:49:15 -1109
Parker 13:34:02 -13.5 AT Down 17.1 315.1 Really Low 13:19:02 - 13:49:02 -1128
Portola 13:34:16 -19.9 Dark Down 24.5 311.1 Low 13:19:16 - 13:49:16 -1130
Gimple 13:34:17 -20.2 Dark Down 25.0 310.9 Low 13:19:17 - 13:49:17 -1131
Carson City 13:34:14 -19.2 Dark Down 23.7 311.6 Low 13:19:14 - 13:49:14 -1133
Greenville 13:34:17 -20.3 Dark Down 25.0 310.8 Low 13:19:17 - 13:49:17 -1136
Gardnerville 13:34:14 -19.1 Dark Down 23.5 311.7 Low 13:19:14 - 13:49:14 -1148
Quincy 13:34:17 -20.3 Dark Down 24.9 310.9 Low 13:19:17 - 13:49:17 -1150
Bishop 13:34:10 -17.7 AT Down 21.7 312.7 Low 13:19:10 - 13:49:10 -1174
Lee Vining 13:34:12 -18.4 Dark Down 22.5 312.3 Low 13:19:12 - 13:49:12 -1178
Blythe 13:34:02 -13.6 AT Down 16.9 315.1 Really Low 13:19:02 - 13:49:02 -1185
Lone Pine 13:34:08 -17.2 AT Down 21.0 313.1 Low 13:19:08 - 13:49:08 -1207
Yuma 13:34:00 -13.3 AT Down 16.3 315.3 Really Low 13:19:00 - 13:49:00 -1252
Calipatria 13:34:01 -14.2 AT Down 17.1 314.9 Really Low 13:19:01 - 13:49:01 -1284
Idyllwild 13:34:02 -15.3 AT Down 18.2 314.3 Really Low 13:19:02 - 13:49:02 -1321
Wildwood 13:34:03 -16.9 AT Down 19.6 313.6 Really Low 13:19:03 - 13:49:03 -1423
CPSLO 13:34:07 -18.9 Dark Down 21.7 312.5 Low 13:19:07 - 13:49:07 -1470

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 341275, (2019/12/26 13:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 32.05 151
34Bet Aur      05:59:31.6 +44:56:51  1.9  5.38 157
PPM 048270     05:36:16.0 +47:42:55  6.1  1.60 153
PPM 048157     05:29:54.8 +46:34:18  8.4  0.06 153
341275         05:30:02.0 +46:31:13 15.4       153
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:04:18 UT

Marc W. Buie, Southwest Research Institute

RECON