RECON: TNO occultation with 13UG17

Event between 13UG17 and star GA0960:00121218 with event index number of 220015

Geocentric closest approach at 2018/10/09 06:50:34 UTC

J2000 position of star is 01:23:29.3 +06:44:41
Equinox of date position of star is 01:24:27.0 +06:50:26
Stellar brightness G=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 219 seconds.
The 1-sigma cross-track error in the shadow position is 3546 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 06:51UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:55:40.8 +20:53:56  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 4.1 sigma about the mid-time.
The median site spacing is 16.9 km RECON observability=1.0 and success probability=4.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 06:50:20 -45.2 Dark Down 44.0 151.8 Up 06:35:20 - 07:05:20 7990
Oroville 06:50:22 -45.8 Dark Down 44.6 151.7 Up 06:35:22 - 07:05:22 7949
Tonasket 06:50:22 -46.0 Dark Down 44.8 151.6 Up 06:35:22 - 07:05:22 7933
Okanogan 06:50:22 -46.3 Dark Down 45.0 151.2 Up 06:35:22 - 07:05:22 7916
Brewster 06:50:25 -46.5 Dark Down 45.2 150.9 Up 06:35:25 - 07:05:25 7905
Manson/Chelan 06:50:26 -46.6 Dark Down 45.3 150.3 Up 06:35:26 - 07:05:26 7902
Entiat 06:50:26 -46.8 Dark Down 45.5 150.1 Up 06:35:26 - 07:05:26 7890
Wenatchee 06:50:26 -47.0 Dark Down 45.6 149.8 Up 06:35:26 - 07:05:26 7877
Ellensburg 06:50:26 -47.3 Dark Down 45.9 149.3 Up 06:35:26 - 07:05:26 7857
Yakima 06:50:26 -47.7 Dark Down 46.3 149.0 Up 06:35:26 - 07:05:26 7830
Toppenish/White Swan 06:50:26 -48.0 Dark Down 46.5 149.2 Up 06:35:26 - 07:05:26 7811
Goldendale 06:50:26 -48.4 Dark Down 46.8 148.3 Up 06:35:26 - 07:05:26 7788
The Dalles 06:50:26 -48.5 Dark Down 46.9 147.7 Up 06:35:26 - 07:05:26 7785
Pasco 06:50:26 -48.4 Dark Down 47.1 150.8 Up 06:35:26 - 07:05:26 7762
Maupin 06:50:26 -48.9 Dark Down 47.3 147.6 Up 06:35:26 - 07:05:26 7754
George/Umatilla 06:50:26 -48.6 Dark Down 47.3 150.3 Up 06:35:26 - 07:05:26 7746
PNWRO 06:50:26 -48.7 Dark Down 47.3 151.0 Up 06:35:26 - 07:05:26 7738
Madras/Culver 06:50:36 -49.4 Dark Down 47.7 147.2 Up 06:35:36 - 07:05:36 7715
Sisters 06:50:38 -49.6 Dark Down 47.8 146.4 Up 06:35:38 - 07:05:38 7706
Redmond 06:50:37 -49.7 Dark Down 48.0 147.0 Up 06:35:37 - 07:05:37 7692
Bend 06:50:38 -49.8 Dark Down 48.1 146.6 Up 06:35:38 - 07:05:38 7681
Oregon Observatory 06:50:39 -50.0 Dark Down 48.2 146.4 Up 06:35:39 - 07:05:39 7674
La Pine/Gilchrist 06:50:39 -50.1 Dark Down 48.4 146.2 Up 06:35:39 - 07:05:39 7661
North Lake 06:50:39 -50.7 Dark Down 49.0 146.7 Up 06:35:39 - 07:05:39 7611
Chiloquin 06:50:43 -51.0 Dark Down 49.2 145.0 Up 06:35:43 - 07:05:43 7594
Klamath Falls 06:50:44 -51.4 Dark Down 49.5 144.9 Up 06:35:44 - 07:05:44 7567
Paisley 06:50:39 -51.3 Dark Down 49.6 146.9 Up 06:35:39 - 07:05:39 7560
Tulelake 06:50:44 -51.7 Dark Down 49.8 145.1 Up 06:35:44 - 07:05:44 7538
Lakeview 06:50:40 -51.8 Dark Down 50.1 146.8 Up 06:35:40 - 07:05:40 7517
Fall River/Burney 06:50:45 -52.6 Dark Down 50.6 144.6 Up 06:35:45 - 07:05:45 7469
Cedarville 06:50:41 -52.5 Dark Down 50.7 146.6 Up 06:35:41 - 07:05:41 7463
Susanville 06:50:44 -53.4 Dark Down 51.4 145.2 Up 06:35:44 - 07:05:44 7397
Greenville 06:50:47 -53.5 Dark Down 51.5 144.6 Up 06:35:47 - 07:05:47 7387
Gimple 06:50:46 -53.6 Dark Down 51.6 144.7 Up 06:35:46 - 07:05:46 7384
Quincy 06:50:47 -53.7 Dark Down 51.7 144.4 Up 06:35:47 - 07:05:47 7371
Portola 06:50:45 -54.0 Dark Down 52.0 145.0 Up 06:35:45 - 07:05:45 7346
Reno 06:50:44 -54.4 Dark Down 52.5 145.8 Up 06:35:44 - 07:05:44 7303
Carson City 06:50:45 -54.8 Dark Down 52.8 145.5 Up 06:35:45 - 07:05:45 7275
Gardnerville 06:50:46 -55.0 Dark Down 53.1 145.4 Up 06:35:46 - 07:05:46 7254
Yerington 06:50:44 -55.1 Dark Down 53.3 146.3 Up 06:35:44 - 07:05:44 7238
Hawthorne 06:50:44 -55.7 Dark Down 53.9 146.8 Up 06:35:44 - 07:05:44 7183
Lee Vining 06:50:47 -56.1 Dark Down 54.1 145.6 Up 06:35:47 - 07:05:47 7156
Tonopah 06:50:40 -56.6 Dark Down 54.9 148.6 Up 06:35:40 - 07:05:40 7096
Bishop 06:50:46 -56.9 Dark Down 55.0 146.3 Up 06:35:46 - 07:05:46 7084
Lone Pine 06:50:46 -57.7 Dark Down 55.7 146.2 Up 06:35:46 - 07:05:46 7011
CPSLO 06:50:57 -57.9 Dark Down 55.6 141.1 Up 06:35:57 - 07:05:57 7002
Beatty 06:50:41 -57.8 Dark Down 56.0 148.5 Up 06:35:41 - 07:05:41 6988
Indian Springs 06:50:39 -58.4 Dark Down 56.8 150.0 Up 06:35:39 - 07:05:39 6922
Henderson 06:50:38 -59.1 Dark Down 57.5 150.7 Up 06:35:38 - 07:05:38 6853
Niwot 06:50:00 -56.2 Dark Down 56.2 169.8 Up 06:35:00 - 07:05:00 6839
Wildwood 06:50:54 -59.8 Dark Down 57.6 143.2 Up 06:35:54 - 07:05:54 6827
Searchlight/Boulder City 06:50:39 -59.6 Dark Down 58.0 150.4 Up 06:35:39 - 07:05:39 6803
Laughlin/Bullhead City 06:50:39 -60.0 Dark Down 58.4 150.7 Up 06:35:39 - 07:05:39 6766
Patrick 06:50:36 -59.9 Dark Down 58.5 152.1 Up 06:35:36 - 07:05:36 6760
Kingman/Dolan Springs 06:50:36 -60.1 Dark Down 58.6 151.6 Up 06:35:36 - 07:05:36 6749
Mohave Valley 06:50:39 -60.3 Dark Down 58.7 150.5 Up 06:35:39 - 07:05:39 6743
Idyllwild 06:50:48 -60.8 Dark Down 58.7 145.9 Up 06:35:48 - 07:05:48 6726
DCO 06:50:34 -60.4 Dark Down 59.0 153.1 Up 06:35:34 - 07:05:34 6708
Lake Havasu City 06:50:39 -60.7 Dark Down 59.1 150.6 Up 06:35:39 - 07:05:39 6700
Parker 06:50:39 -61.0 Dark Down 59.4 150.4 Up 06:35:39 - 07:05:39 6670
Blythe 06:50:42 -61.5 Dark Down 59.8 149.4 Up 06:35:42 - 07:05:42 6637
Calipatria 06:50:46 -61.7 Dark Down 59.8 147.4 Up 06:35:46 - 07:05:46 6630
Yuma 06:50:44 -62.3 Dark Down 60.6 148.5 Up 06:35:44 - 07:05:44 6559

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 06:51UT)
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 +07:25:14  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 2018/06/05 16:29:25 UT

Marc W. Buie, Southwest Research Institute

RECON