RECON: TNO occultation with 11BV163

Event between 11BV163 and star UC4-541-048329 with event index number of 245704

Geocentric closest approach at 2020/01/23 06:14:54 UTC

J2000 position of star is 09:21:20.7 +18:00:05
Equinox of date position of star is 09:22:21.6 +17:55:24
Stellar brightness R=15.8, use SENSEUP=128
Star is 146 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 39.7 AU from the Sun and 38.7 AU from the Earth.
The TNO is moving 24.3 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 712 seconds.
The 1-sigma cross-track error in the shadow position is 4595 km.
The sky-plane scale is 28102.0 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=281.8 km assuming a 5% albedo -- 11.6 sec chord
Diameter=115.1 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 11BV163, (2020/01/23 06:15UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:26.3 +11:52:06  1.3 12.85 134
PPM 126439     09:26:39.0 +16:29:53  6.3  1.73 145
PPM 126391     09:23:55.5 +18:02:43  8.5  0.37 146
PPM 126359     09:22:09.6 +18:04:59 10.5  0.18 147
11BV163        09:22:28.0 +17:54:54 15.8       146
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 1.3 sigma about the mid-time.
The median site spacing is 26.6 km RECON observability=1.0 and success probability=6.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:17:36 -53.1 Dark Down 43.4 116.0 Up 06:02:36 - 06:32:36 7576
Tonasket 06:17:36 -53.2 Dark Down 43.5 115.8 Up 06:02:36 - 06:32:36 7552
Okanogan 06:17:36 -53.4 Dark Down 43.6 115.4 Up 06:02:36 - 06:32:36 7517
Brewster 06:17:37 -53.5 Dark Down 43.6 115.0 Up 06:02:37 - 06:32:37 7488
Manson/Chelan 06:17:38 -53.4 Dark Down 43.5 114.4 Up 06:02:38 - 06:32:38 7466
Entiat 06:17:39 -53.5 Dark Down 43.5 114.2 Up 06:02:39 - 06:32:39 7443
Wenatchee 06:17:39 -53.6 Dark Down 43.6 113.8 Up 06:02:39 - 06:32:39 7416
Ellensburg 06:17:40 -53.8 Dark Down 43.6 113.3 Up 06:02:40 - 06:32:40 7373
Yakima 06:17:40 -54.0 Dark Down 43.7 112.9 Up 06:02:40 - 06:32:40 7331
Toppenish/White Swan 06:17:41 -54.3 Dark Down 43.9 112.9 Up 06:02:41 - 06:32:41 7309
Pasco 06:17:37 -55.0 Dark Down 44.8 114.0 Up 06:02:37 - 06:32:37 7300
PNWRO 06:17:37 -55.3 Dark Down 45.0 114.0 Up 06:02:37 - 06:32:37 7275
George/Umatilla 06:17:38 -55.1 Dark Down 44.8 113.5 Up 06:02:38 - 06:32:38 7264
Goldendale 06:17:42 -54.4 Dark Down 43.9 112.0 Up 06:02:42 - 06:32:42 7250
The Dalles 06:17:43 -54.3 Dark Down 43.7 111.4 Up 06:02:43 - 06:32:43 7225
Maupin 06:17:43 -54.6 Dark Down 43.9 111.1 Up 06:02:43 - 06:32:43 7182
Madras/Culver 06:17:44 -54.9 Dark Down 44.1 110.6 Up 06:02:44 - 06:32:44 7124
Sisters 06:17:45 -54.8 Dark Down 43.9 109.9 Up 06:02:45 - 06:32:45 7088
Redmond 06:17:45 -55.1 Dark Down 44.2 110.2 Up 06:02:45 - 06:32:45 7086
Bend 06:17:45 -55.1 Dark Down 44.2 109.9 Up 06:02:45 - 06:32:45 7063
Oregon Observatory 06:17:45 -55.2 Dark Down 44.1 109.6 Up 06:02:45 - 06:32:45 7045
La Pine/Gilchrist 06:17:46 -55.2 Dark Down 44.2 109.4 Up 06:02:46 - 06:32:46 7023
North Lake 06:17:44 -55.8 Dark Down 44.7 109.5 Up 06:02:44 - 06:32:44 6978
Paisley 06:17:44 -56.4 Dark Down 45.2 109.4 Up 06:02:44 - 06:32:44 6920
Chiloquin 06:17:47 -55.6 Dark Down 44.3 108.1 Up 06:02:47 - 06:32:47 6904
Klamath Falls 06:17:47 -55.9 Dark Down 44.5 107.8 Up 06:02:47 - 06:32:47 6867
Lakeview 06:17:44 -56.8 Dark Down 45.5 109.1 Up 06:02:44 - 06:32:44 6867
Tulelake 06:17:47 -56.2 Dark Down 44.8 107.8 Up 06:02:47 - 06:32:47 6839
Cedarville 06:17:44 -57.2 Dark Down 45.8 108.6 Up 06:02:44 - 06:32:44 6797
Niwot 06:17:02 -66.3 Dark Down 56.5 122.8 Up 06:02:02 - 06:32:02 6762
Fall River/Burney 06:17:47 -56.7 Dark Down 45.1 107.0 Up 06:02:47 - 06:32:47 6742
Susanville 06:17:46 -57.5 Dark Down 45.8 107.1 Up 06:02:46 - 06:32:46 6676
Gimple 06:17:47 -57.6 Dark Down 45.7 106.6 Up 06:02:47 - 06:32:47 6646
Greenville 06:17:47 -57.5 Dark Down 45.7 106.5 Up 06:02:47 - 06:32:47 6646
Quincy 06:17:46 -57.6 Dark Down 45.7 106.3 Up 06:02:46 - 06:32:46 6624
Portola 06:17:46 -58.0 Dark Down 46.1 106.6 Up 06:02:46 - 06:32:46 6612
Reno 06:17:44 -58.5 Dark Down 46.7 106.9 Up 06:02:44 - 06:32:44 6585
Carson City 06:17:44 -58.7 Dark Down 46.8 106.6 Up 06:02:44 - 06:32:44 6546
Yerington 06:17:42 -59.3 Dark Down 47.3 106.9 Up 06:02:42 - 06:32:42 6528
Gardnerville 06:17:44 -58.9 Dark Down 46.9 106.4 Up 06:02:44 - 06:32:44 6520
Hawthorne 06:17:41 -59.8 Dark Down 47.8 106.9 Up 06:02:41 - 06:32:41 6479
Tonopah 06:17:38 -61.0 Dark Down 49.0 107.6 Up 06:02:38 - 06:32:38 6435
Lee Vining 06:17:43 -59.8 Dark Down 47.6 105.9 Up 06:02:43 - 06:32:43 6416
Bishop 06:17:41 -60.6 Dark Down 48.3 105.9 Up 06:02:41 - 06:32:41 6354
Beatty 06:17:37 -61.9 Dark Down 49.7 106.7 Up 06:02:37 - 06:32:37 6312
Indian Springs 06:17:34 -62.8 Dark Down 50.6 107.3 Up 06:02:34 - 06:32:34 6283
Lone Pine 06:17:41 -61.2 Dark Down 48.8 105.3 Up 06:02:41 - 06:32:41 6273
Henderson 06:17:32 -63.6 Dark Down 51.3 107.3 Up 06:02:32 - 06:32:32 6229
Patrick 06:17:29 -64.7 Dark Down 52.4 107.5 Up 06:02:29 - 06:32:29 6169
Searchlight/Boulder City 06:17:31 -63.9 Dark Down 51.5 106.7 Up 06:02:31 - 06:32:31 6167
Kingman/Dolan Springs 06:17:29 -64.7 Dark Down 52.3 107.1 Up 06:02:29 - 06:32:29 6143
DCO 06:17:27 -65.3 Dark Down 53.0 107.8 Up 06:02:27 - 06:32:27 6141
Laughlin/Bullhead City 06:17:31 -64.3 Dark Down 51.9 106.6 Up 06:02:31 - 06:32:31 6137
CPSLO 06:17:49 -59.9 Dark Down 47.1 101.9 Up 06:02:49 - 06:32:49 6121
Mohave Valley 06:17:31 -64.5 Dark Down 52.0 106.3 Up 06:02:31 - 06:32:31 6107
Lake Havasu City 06:17:31 -64.9 Dark Down 52.3 106.0 Up 06:02:31 - 06:32:31 6065
Parker 06:17:30 -65.1 Dark Down 52.4 105.6 Up 06:02:30 - 06:32:30 6027
Wildwood 06:17:43 -61.9 Dark Down 49.0 102.1 Up 06:02:43 - 06:32:43 5996
Blythe 06:17:31 -65.1 Dark Down 52.3 104.7 Up 06:02:31 - 06:32:31 5967
Idyllwild 06:17:38 -63.5 Dark Down 50.6 103.1 Up 06:02:38 - 06:32:38 5966
Calipatria 06:17:34 -64.6 Dark Down 51.7 103.3 Up 06:02:34 - 06:32:34 5907
Yuma 06:17:31 -65.5 Dark Down 52.5 103.5 Up 06:02:31 - 06:32:31 5865

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 11BV163, (2020/01/23 06:15UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 12.85 134
PPM 126439     09:25:32.4 +16:35:07  6.3  1.73 145
PPM 126391     09:22:48.3 +18:07:55  8.5  0.37 146
PPM 126359     09:21:02.4 +18:10:09 10.5  0.18 147
11BV163        09:21:20.7 +18:00:05 15.8       146
Positions are for J2000

Event circumstances last updated at 2018/02/28 17:49:01 UT

Marc W. Buie, Southwest Research Institute

RECON