RECON: TNO occultation with 13UG17

Event between 13UG17 and star UC4-484-001935 with event index number of 220015

Geocentric closest approach at 2018/10/09 06:49:17 UTC

J2000 position of star is 01:23:29.3 +06:44:41
Equinox of date position of star is 01:24:25.4 +06:50:17
Stellar brightness R=13.9, use SENSEUP=64
Star is 175 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=24.4

[RECON map]
TNO is 41.5 AU from the Sun and 40.5 AU from the Earth.
The TNO is moving 25.0 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 217 seconds.
The 1-sigma cross-track error in the shadow position is 3613 km.
The sky-plane scale is 29349.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 5.3 sec chord
Diameter=54.3 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 13UG17, (2018/10/09 06:49UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:55:40.8 +20:53:57  2.6 15.96 159
PPM 144653     01:30:02.0 +07:23:26  6.4  1.49 174
PPM 144532     01:23:55.8 +07:31:05  8.0  0.69 174
PPM 144541     01:24:22.5 +06:50:18  9.2  0.02 175
13UG17         01:24:28.1 +06:50:32 13.9       175
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 4.2 sigma about the mid-time.
The median site spacing is 16.5 km RECON observability=1.0 and success probability=3.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:49:05 -45.7 Dark Down 44.5 151.3 Up 06:34:05 - 07:04:05 8810
Tonasket 06:49:06 -45.9 Dark Down 44.7 151.2 Up 06:34:06 - 07:04:06 8795
Okanogan 06:49:06 -46.2 Dark Down 44.9 150.8 Up 06:34:06 - 07:04:06 8778
Brewster 06:49:08 -46.4 Dark Down 45.1 150.4 Up 06:34:08 - 07:04:08 8767
Manson/Chelan 06:49:09 -46.5 Dark Down 45.2 149.8 Up 06:34:09 - 07:04:09 8764
Entiat 06:49:10 -46.7 Dark Down 45.3 149.6 Up 06:34:10 - 07:04:10 8752
Wenatchee 06:49:10 -46.9 Dark Down 45.5 149.4 Up 06:34:10 - 07:04:10 8739
Ellensburg 06:49:12 -47.3 Dark Down 45.8 148.9 Up 06:34:12 - 07:04:12 8718
Yakima 06:49:13 -47.6 Dark Down 46.2 148.6 Up 06:34:13 - 07:04:13 8692
Toppenish/White Swan 06:49:13 -47.9 Dark Down 46.4 148.8 Up 06:34:13 - 07:04:13 8672
Goldendale 06:49:16 -48.3 Dark Down 46.7 147.9 Up 06:34:16 - 07:04:16 8648
The Dalles 06:49:17 -48.4 Dark Down 46.8 147.3 Up 06:34:17 - 07:04:17 8645
Pasco 06:49:09 -48.3 Dark Down 46.9 150.4 Up 06:34:09 - 07:04:09 8624
Maupin 06:49:18 -48.8 Dark Down 47.2 147.2 Up 06:34:18 - 07:04:18 8613
George/Umatilla 06:49:11 -48.6 Dark Down 47.2 149.9 Up 06:34:11 - 07:04:11 8608
PNWRO 06:49:10 -48.6 Dark Down 47.2 150.6 Up 06:34:10 - 07:04:10 8600
Madras/Culver 06:49:20 -49.3 Dark Down 47.6 146.8 Up 06:34:20 - 07:04:20 8577
Sisters 06:49:21 -49.5 Dark Down 47.7 146.0 Up 06:34:21 - 07:04:21 8569
Redmond 06:49:20 -49.6 Dark Down 47.9 146.5 Up 06:34:20 - 07:04:20 8554
Bend 06:49:21 -49.8 Dark Down 48.0 146.2 Up 06:34:21 - 07:04:21 8544
Oregon Observatory 06:49:22 -49.9 Dark Down 48.1 145.9 Up 06:34:22 - 07:04:22 8536
La Pine/Gilchrist 06:49:23 -50.0 Dark Down 48.3 145.7 Up 06:34:23 - 07:04:23 8524
North Lake 06:49:22 -50.6 Dark Down 48.9 146.3 Up 06:34:22 - 07:04:22 8474
Chiloquin 06:49:26 -50.9 Dark Down 49.0 144.5 Up 06:34:26 - 07:04:26 8457
Klamath Falls 06:49:27 -51.3 Dark Down 49.3 144.4 Up 06:34:27 - 07:04:27 8430
Paisley 06:49:22 -51.2 Dark Down 49.5 146.4 Up 06:34:22 - 07:04:22 8422
Tulelake 06:49:27 -51.6 Dark Down 49.7 144.6 Up 06:34:27 - 07:04:27 8401
Lakeview 06:49:24 -51.7 Dark Down 50.0 146.4 Up 06:34:24 - 07:04:24 8380
Fall River/Burney 06:49:29 -52.5 Dark Down 50.5 144.1 Up 06:34:29 - 07:04:29 8332
Cedarville 06:49:24 -52.4 Dark Down 50.6 146.2 Up 06:34:24 - 07:04:24 8326
Susanville 06:49:28 -53.3 Dark Down 51.3 144.7 Up 06:34:28 - 07:04:28 8260
Greenville 06:49:30 -53.4 Dark Down 51.4 144.1 Up 06:34:30 - 07:04:30 8250
Gimple 06:49:29 -53.4 Dark Down 51.4 144.2 Up 06:34:29 - 07:04:29 8247
Quincy 06:49:30 -53.6 Dark Down 51.6 144.0 Up 06:34:30 - 07:04:30 8235
Portola 06:49:29 -53.9 Dark Down 51.9 144.6 Up 06:34:29 - 07:04:29 8209
Reno 06:49:28 -54.3 Dark Down 52.4 145.3 Up 06:34:28 - 07:04:28 8166
Carson City 06:49:29 -54.7 Dark Down 52.7 145.1 Up 06:34:29 - 07:04:29 8138
Gardnerville 06:49:29 -54.9 Dark Down 52.9 145.0 Up 06:34:29 - 07:04:29 8118
Yerington 06:49:27 -55.0 Dark Down 53.1 145.9 Up 06:34:27 - 07:04:27 8101
Hawthorne 06:49:27 -55.6 Dark Down 53.7 146.3 Up 06:34:27 - 07:04:27 8046
Lee Vining 06:49:30 -56.0 Dark Down 54.0 145.1 Up 06:34:30 - 07:04:30 8020
Tonopah 06:49:24 -56.5 Dark Down 54.7 148.1 Up 06:34:24 - 07:04:24 7960
Bishop 06:49:28 -56.8 Dark Down 54.8 145.8 Up 06:34:28 - 07:04:28 7947
Lone Pine 06:49:30 -57.6 Dark Down 55.6 145.7 Up 06:34:30 - 07:04:30 7875
CPSLO 06:49:41 -57.8 Dark Down 55.4 140.6 Up 06:34:41 - 07:04:41 7866
Beatty 06:49:25 -57.7 Dark Down 55.9 147.9 Up 06:34:25 - 07:04:25 7851
Indian Springs 06:49:22 -58.3 Dark Down 56.6 149.4 Up 06:34:22 - 07:04:22 7786
Henderson 06:49:22 -59.0 Dark Down 57.4 150.2 Up 06:34:22 - 07:04:22 7717
Niwot 06:48:43 -56.2 Dark Down 56.2 169.2 Up 06:33:43 - 07:03:43 7702
Wildwood 06:49:37 -59.7 Dark Down 57.4 142.6 Up 06:34:37 - 07:04:37 7691
Searchlight/Boulder City 06:49:23 -59.5 Dark Down 57.9 149.8 Up 06:34:23 - 07:04:23 7667
Laughlin/Bullhead City 06:49:22 -59.9 Dark Down 58.3 150.2 Up 06:34:22 - 07:04:22 7630
Patrick 06:49:20 -59.9 Dark Down 58.4 151.6 Up 06:34:20 - 07:04:20 7624
Kingman/Dolan Springs 06:49:20 -60.0 Dark Down 58.5 151.1 Up 06:34:20 - 07:04:20 7613
Mohave Valley 06:49:23 -60.2 Dark Down 58.5 150.0 Up 06:34:23 - 07:04:23 7607
Idyllwild 06:49:32 -60.7 Dark Down 58.6 145.4 Up 06:34:32 - 07:04:32 7591
DCO 06:49:18 -60.3 Dark Down 58.9 152.6 Up 06:34:18 - 07:04:18 7572
Lake Havasu City 06:49:23 -60.6 Dark Down 59.0 150.1 Up 06:34:23 - 07:04:23 7564
Parker 06:49:24 -61.0 Dark Down 59.3 149.8 Up 06:34:24 - 07:04:24 7534
Blythe 06:49:26 -61.4 Dark Down 59.6 148.9 Up 06:34:26 - 07:04:26 7501
Calipatria 06:49:29 -61.6 Dark Down 59.6 146.8 Up 06:34:29 - 07:04:29 7495
Yuma 06:49:28 -62.3 Dark Down 60.4 148.0 Up 06:34:28 - 07:04:28 7424

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 13UG17, (2018/10/09 06:49UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:54:38.5 +20:48:27  2.6 15.96 159
PPM 144653     01:29:03.1 +07:17:38  6.4  1.49 174
PPM 144532     01:22:56.9 +07:25:13  8.0  0.69 174
PPM 144541     01:23:23.7 +06:44:27  9.2  0.02 175
13UG17         01:23:29.3 +06:44:41 13.9       175
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:59:10 UT

Marc W. Buie, Southwest Research Institute

RECON