RECON: TNO occultation with 307463

Event between (307463) 02VU130 and star GA1120:01174338 with event index number of 233015

Geocentric closest approach at 2019/12/19 02:24:00 UTC

J2000 position of star is 05:26:23.0 +23:20:57
Equinox of date position of star is 05:27:33.9 +23:21:53
Stellar brightness G=16.4, use SENSEUP=128
Star is 93 degrees from the moon. Moon is 51% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 39.8 AU from the Sun and 38.8 AU from the Earth.
The TNO is moving 25.6 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 337 seconds.
The 1-sigma cross-track error in the shadow position is 2128 km.
The sky-plane scale is 28122.6 km/arcsec.

The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 15.5 sec chord
Diameter=162.5 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 307463, (2019/12/19 02:24UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.1 +16:32:52  0.8 13.68 106
Alnath         05:27:33.3 +28:37:21  1.6  5.26  92
114 Tau        05:28:50.1 +21:57:09  4.7  1.44  93
PPM 094385     05:29:08.1 +23:18:29  8.4  0.36  93
PPM 094377     05:28:31.4 +23:07:20 11.2  0.32  93
307463         05:27:35.8 +23:21:55 16.4        93
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 16.3 km RECON observability=1.0 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 02:26:28 -22.7 Dark Down 25.9 83.8 Low 02:11:28 - 02:41:28 9859
Summerland 02:26:30 -22.5 Dark Down 25.7 83.5 Low 02:11:30 - 02:41:30 9847
Penticton 02:26:29 -22.6 Dark Down 25.7 83.5 Low 02:11:29 - 02:41:29 9839
Okanagan Falls 02:26:30 -22.5 Dark Down 25.7 83.4 Low 02:11:30 - 02:41:30 9827
Oliver 02:26:31 -22.5 Dark Down 25.7 83.4 Low 02:11:31 - 02:41:31 9815
Anarchist Mountain Observatory 02:26:31 -22.6 Dark Down 25.8 83.4 Low 02:11:31 - 02:41:31 9797
Oroville 02:26:32 -22.6 Dark Down 25.8 83.3 Low 02:11:32 - 02:41:32 9794
Tonasket 02:26:33 -22.5 Dark Down 25.7 83.2 Low 02:11:33 - 02:41:33 9778
Okanogan 02:26:34 -22.4 Dark Down 25.6 83.0 Low 02:11:34 - 02:41:34 9758
Brewster 02:26:35 -22.2 Dark Down 25.4 82.7 Low 02:11:35 - 02:41:35 9745
Manson/Chelan 02:26:36 -21.9 Dark Down 25.2 82.3 Low 02:11:36 - 02:41:36 9742
Entiat 02:26:36 -21.8 Dark Down 25.1 82.2 Low 02:11:36 - 02:41:36 9728
Wenatchee 02:26:37 -21.7 Dark Down 25.0 82.0 Low 02:11:37 - 02:41:37 9713
Ellensburg 02:26:39 -21.5 Dark Down 24.8 81.7 Low 02:11:39 - 02:41:39 9690
Yakima 02:26:40 -21.4 Dark Down 24.7 81.5 Low 02:11:40 - 02:41:40 9662
Toppenish/White Swan 02:26:40 -21.5 Dark Down 24.8 81.5 Low 02:11:40 - 02:41:40 9641
Goldendale 02:26:43 -21.1 Dark Down 24.4 81.0 Low 02:11:43 - 02:41:43 9614
The Dalles 02:26:44 -20.8 Dark Down 24.1 80.6 Low 02:11:44 - 02:41:44 9609
Pasco 02:26:40 -22.3 Dark Down 25.7 82.3 Low 02:11:40 - 02:41:40 9593
George/Umatilla 02:26:42 -22.1 Dark Down 25.5 82.0 Low 02:11:42 - 02:41:42 9575
Maupin 02:26:45 -20.7 Dark Down 24.2 80.5 Low 02:11:45 - 02:41:45 9575
PNWRO 02:26:41 -22.4 Dark Down 25.8 82.3 Low 02:11:41 - 02:41:41 9567
Madras/Culver 02:26:47 -20.6 Dark Down 24.0 80.2 Low 02:11:47 - 02:41:47 9536
Sisters 02:26:48 -20.2 Dark Down 23.7 79.8 Low 02:11:48 - 02:41:48 9525
Redmond 02:26:48 -20.5 Dark Down 23.9 80.1 Low 02:11:48 - 02:41:48 9511
Bend 02:26:49 -20.3 Dark Down 23.8 79.9 Low 02:11:49 - 02:41:49 9499
Oregon Observatory 02:26:49 -20.2 Dark Down 23.7 79.7 Low 02:11:49 - 02:41:49 9490
La Pine/Gilchrist 02:26:50 -20.1 Dark Down 23.6 79.6 Low 02:11:50 - 02:41:50 9477
North Lake 02:26:51 -20.4 Dark Down 24.0 79.8 Low 02:11:51 - 02:41:51 9425
Chiloquin 02:26:53 -19.6 Dark Down 23.2 78.9 Low 02:11:53 - 02:41:53 9404
Klamath Falls 02:26:54 -19.6 Dark Down 23.2 78.8 Low 02:11:54 - 02:41:54 9375
Paisley 02:26:53 -20.6 Dark Down 24.1 79.8 Low 02:11:53 - 02:41:53 9371
Tulelake 02:26:55 -19.7 Dark Down 23.3 78.9 Low 02:11:55 - 02:41:55 9345
Lakeview 02:26:54 -20.6 Dark Down 24.2 79.7 Low 02:11:54 - 02:41:54 9325
Fall River/Burney 02:26:58 -19.6 Dark Down 23.2 78.6 Low 02:11:58 - 02:41:58 9271
Cedarville 02:26:55 -20.6 Dark Down 24.2 79.5 Low 02:11:55 - 02:41:55 9268
Susanville 02:26:59 -20.0 Dark Down 23.7 78.7 Low 02:11:59 - 02:41:59 9196
Greenville 02:27:00 -19.7 Dark Down 23.4 78.4 Low 02:12:00 - 02:42:00 9185
Gimple 02:27:00 -19.8 Dark Down 23.4 78.5 Low 02:12:00 - 02:42:00 9182
Quincy 02:27:01 -19.6 Dark Down 23.3 78.4 Low 02:12:01 - 02:42:01 9168
Portola 02:27:01 -20.0 Dark Down 23.7 78.6 Low 02:12:01 - 02:42:01 9142
Reno 02:27:01 -20.4 Dark Down 24.1 78.8 Low 02:12:01 - 02:42:01 9098
Carson City 02:27:02 -20.3 Dark Down 24.1 78.7 Low 02:12:02 - 02:42:02 9069
Gardnerville 02:27:03 -20.3 Dark Down 24.1 78.6 Low 02:12:03 - 02:42:03 9047
Yerington 02:27:02 -20.8 Dark Down 24.5 79.0 Low 02:12:02 - 02:42:02 9031
Hawthorne 02:27:03 -21.0 Dark Down 24.8 79.1 Low 02:12:03 - 02:42:03 8974
Lee Vining 02:27:05 -20.5 Dark Down 24.4 78.5 Low 02:12:05 - 02:42:05 8945
Tonopah 02:27:03 -22.0 Dark Down 25.8 79.6 Low 02:12:03 - 02:42:03 8886
Bishop 02:27:06 -21.0 Dark Down 24.8 78.7 Low 02:12:06 - 02:42:06 8870
Lone Pine 02:27:09 -21.0 Dark Down 24.9 78.5 Low 02:12:09 - 02:42:09 8794
CPSLO 02:27:14 -18.7 Dark Down 22.6 76.6 Low 02:12:14 - 02:42:14 8777
Beatty 02:27:06 -22.1 Dark Down 26.0 79.3 Low 02:12:06 - 02:42:06 8773
Indian Springs 02:27:07 -22.9 Dark Down 26.8 79.7 Low 02:12:07 - 02:42:07 8707
Niwot 02:26:44 -31.5 Dark Down 35.3 87.8 Up 02:11:44 - 02:41:44 8656
SwRI 02:26:45 -31.4 Dark Down 35.2 87.7 Up 02:11:45 - 02:41:45 8650
Henderson 02:27:07 -23.3 Dark Down 27.2 79.8 Low 02:12:07 - 02:42:07 8636
Wildwood 02:27:15 -20.0 Dark Down 24.0 77.1 Low 02:12:15 - 02:42:15 8598
Searchlight/Boulder City 02:27:08 -23.2 Dark Down 27.2 79.6 Low 02:12:08 - 02:42:08 8584
Laughlin/Bullhead City 02:27:09 -23.5 Dark Down 27.4 79.6 Low 02:12:09 - 02:42:09 8546
Patrick 02:27:08 -24.1 Dark Down 28.0 80.1 Low 02:12:08 - 02:42:08 8542
Kingman/Dolan Springs 02:27:08 -23.9 Dark Down 27.8 79.9 Low 02:12:08 - 02:42:08 8529
Mohave Valley 02:27:09 -23.4 Dark Down 27.4 79.5 Low 02:12:09 - 02:42:09 8521
Idyllwild 02:27:15 -21.4 Dark Down 25.4 77.9 Low 02:12:15 - 02:42:15 8497
DCO 02:27:08 -24.6 Dark Down 28.6 80.3 Low 02:12:08 - 02:42:08 8489
Lake Havasu City 02:27:11 -23.5 Dark Down 27.5 79.4 Low 02:12:11 - 02:42:11 8477
Parker 02:27:11 -23.5 Dark Down 27.5 79.2 Low 02:12:11 - 02:42:11 8445
Blythe 02:27:13 -23.1 Dark Down 27.1 78.8 Low 02:12:13 - 02:42:13 8409
Calipatria 02:27:15 -22.2 Dark Down 26.3 78.1 Low 02:12:15 - 02:42:15 8400
Yuma 02:27:15 -22.9 Dark Down 26.9 78.3 Low 02:12:15 - 02:42:15 8328

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 307463, (2019/12/19 02:24UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 13.68 106
Alnath         05:26:17.5 +28:36:23  1.6  5.26  92
114 Tau        05:27:38.1 +21:56:13  4.7  1.44  93
PPM 094385     05:27:55.4 +23:17:34  8.4  0.36  93
PPM 094377     05:27:18.7 +23:06:24 11.2  0.32  93
307463         05:26:23.0 +23:20:57 16.4        93
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:02:38 UT

Marc W. Buie, Southwest Research Institute

RECON