RECON: TNO occultation with 47932

Event between (47932) 00GN171 and star UC4-308-089298 with event index number of 188053

Geocentric closest approach at 2019/04/30 10:13:59 UTC

J2000 position of star is 16:12:52.9 -28:25:04
Equinox of date position of star is 16:13:59.6 -28:27:45
Stellar brightness R=15.4, use SENSEUP=128
Star is 101 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=20.8

[RECON map]
TNO is 28.9 AU from the Sun and 28.0 AU from the Earth.
The TNO is moving 20.2 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 163 seconds.
The 1-sigma cross-track error in the shadow position is 1495 km.
The sky-plane scale is 20294.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 17.2 sec chord
Diameter=141.6 km assuming a 30% albedo -- 7.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 47932, (2019/04/30 10:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.7 -26:28:24  0.9  4.17  98
23Tau Sco      16:37:05.3 -28:15:16  2.8  5.07  96
12 Sco         16:13:28.0 -28:27:58  5.9  0.13 101
PPM 265263     16:14:02.4 -28:10:49  8.4  0.29 101
PPM 265258     16:13:55.4 -28:22:12  9.1  0.10 101
47932          16:14:04.8 -28:27:57 15.4       100
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 5.0 sigma about the mid-time.
The median site spacing is 10.1 km RECON observability=0.5 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)
Oroville 10:13:43 -19.3 Dark Down 12.2 188.0 Really Low 09:59:38 - 10:27:48 6144
Tonasket 10:13:44 -19.5 Dark Down 12.5 188.0 Really Low 09:59:39 - 10:27:49 6138
Okanogan 10:13:44 -19.8 Dark Down 12.8 187.8 Really Low 09:59:39 - 10:27:49 6130
Brewster 10:13:45 -20.1 Dark Down 13.1 187.7 Really Low 09:59:40 - 10:27:50 6124
Manson/Chelan 10:13:46 -20.4 Dark Down 13.3 187.4 Really Low 09:59:41 - 10:27:51 6119
Entiat 10:13:46 -20.6 Dark Down 13.6 187.3 Really Low 09:59:41 - 10:27:51 6113
Wenatchee 10:13:46 -20.9 Dark Down 13.8 187.2 Really Low 09:59:41 - 10:27:51 6106
Ellensburg 10:13:47 -21.3 Dark Down 14.3 187.0 Really Low 09:59:42 - 10:27:52 6095
Yakima 10:13:46 -21.6 Dark Down 14.7 187.0 Really Low 09:59:41 - 10:27:51 6084
Toppenish/White Swan 10:13:46 -21.8 Dark Down 14.9 187.2 Really Low 09:59:41 - 10:27:51 6078
Pasco 10:13:42 -21.3 Dark Down 14.9 188.3 Really Low 09:59:37 - 10:27:47 6072
PNWRO 10:13:40 -21.5 Dark Down 15.1 188.5 Really Low 09:59:35 - 10:27:45 6065
George/Umatilla 10:13:42 -21.7 Dark Down 15.2 188.1 Really Low 09:59:37 - 10:27:47 6063
Goldendale 10:13:47 -22.4 Dark Down 15.5 186.8 Really Low 09:59:42 - 10:27:52 6062
The Dalles 10:13:49 -22.7 Dark Down 15.7 186.5 Really Low 09:59:44 - 10:27:54 6055
Maupin 10:13:48 -23.0 Dark Down 16.1 186.6 Really Low 09:59:43 - 10:27:53 6042
Madras/Culver 10:13:48 -23.5 Dark Down 16.7 186.6 Really Low 09:59:43 - 10:27:53 6025
Sisters 10:13:49 -23.9 Dark Down 17.0 186.2 Really Low 09:59:44 - 10:27:54 6014
Redmond 10:13:47 -23.8 Dark Down 17.0 186.6 Really Low 09:59:42 - 10:27:52 6013
Bend 10:13:48 -24.0 Dark Down 17.2 186.4 Really Low 09:59:43 - 10:27:53 6006
Oregon Observatory 10:13:48 -24.2 Dark Down 17.4 186.3 Really Low 09:59:43 - 10:27:53 6001
La Pine/Gilchrist 10:13:49 -24.4 Dark Down 17.6 186.3 Really Low 09:59:44 - 10:27:54 5994
North Lake 10:13:46 -24.5 Dark Down 18.0 186.8 Really Low 09:59:41 - 10:27:51 5979
Paisley 10:13:45 -24.8 Dark Down 18.5 187.2 Really Low 09:59:40 - 10:27:50 5959
Chiloquin 10:13:49 -25.5 Dark Down 18.8 186.0 Really Low 09:59:44 - 10:27:54 5955
Klamath Falls 10:13:49 -25.7 Dark Down 19.1 186.1 Really Low 09:59:44 - 10:27:54 5943
Lakeview 10:13:43 -25.1 Dark Down 19.0 187.4 Really Low 09:59:38 - 10:27:48 5940
Tulelake 10:13:48 -25.8 Dark Down 19.3 186.4 Really Low 09:59:43 - 10:27:53 5933
Cedarville 10:13:42 -25.6 Dark Down 19.7 187.6 Really Low 09:59:37 - 10:27:47 5916
Fall River/Burney 10:13:47 -26.5 Dark Down 20.2 186.5 Low 09:59:42 - 10:27:52 5898
Susanville 10:13:43 -26.7 Dark Down 20.8 187.2 Low 09:59:38 - 10:27:48 5873
Greenville 10:13:45 -27.0 Dark Down 21.1 186.9 Low 09:59:40 - 10:27:50 5862
Gimple 10:13:44 -27.0 Dark Down 21.1 187.0 Low 09:59:39 - 10:27:49 5862
Quincy 10:13:44 -27.2 Dark Down 21.3 186.9 Low 09:59:39 - 10:27:49 5854
Portola 10:13:42 -27.1 Dark Down 21.4 187.4 Low 09:59:37 - 10:27:47 5849
Reno 10:13:39 -27.0 Dark Down 21.6 188.0 Low 09:59:34 - 10:27:44 5837
Carson City 10:13:39 -27.3 Dark Down 21.9 188.0 Low 09:59:34 - 10:27:44 5822
Yerington 10:13:36 -27.1 Dark Down 22.1 188.6 Low 09:59:31 - 10:27:41 5813
Gardnerville 10:13:39 -27.5 Dark Down 22.2 188.1 Low 09:59:34 - 10:27:44 5812
Hawthorne 10:13:34 -27.2 Dark Down 22.5 189.1 Low 09:59:29 - 10:27:39 5792
Lee Vining 10:13:36 -27.9 Dark Down 23.1 188.7 Low 09:59:31 - 10:27:41 5768
Tonopah 10:13:28 -26.9 Dark Down 22.7 190.5 Low 09:59:23 - 10:27:33 5767
Niwot 10:12:42 -18.9 Dark Down 18.3 201.1 Really Low 09:58:37 - 10:26:47 5765
Bishop 10:13:32 -28.0 Dark Down 23.6 189.4 Low 09:59:27 - 10:27:37 5740
Beatty 10:13:25 -27.5 Dark Down 23.8 191.0 Low 09:59:20 - 10:27:30 5713
Lone Pine 10:13:31 -28.4 Dark Down 24.3 189.8 Low 09:59:26 - 10:27:36 5704
Indian Springs 10:13:20 -27.2 Dark Down 24.0 192.0 Low 09:59:15 - 10:27:25 5694
Henderson 10:13:17 -27.2 Dark Down 24.4 192.7 Low 09:59:12 - 10:27:22 5665
CPSLO 10:13:41 -30.8 Dark Down 25.9 187.4 Low 09:59:36 - 10:27:46 5647
Searchlight/Boulder City 10:13:16 -27.6 Dark Down 24.9 192.8 Low 09:59:11 - 10:27:21 5637
Patrick 10:13:12 -27.1 Dark Down 24.8 193.8 Low 09:59:07 - 10:27:17 5629
Laughlin/Bullhead City 10:13:14 -27.7 Dark Down 25.1 193.2 Low 09:59:09 - 10:27:19 5621
Kingman/Dolan Springs 10:13:12 -27.3 Dark Down 25.0 193.7 Low 09:59:07 - 10:27:17 5619
DCO 10:13:08 -26.9 Dark Down 24.9 194.5 Low 09:59:03 - 10:27:13 5609
Mohave Valley 10:13:14 -27.8 Dark Down 25.4 193.2 Low 09:59:09 - 10:27:19 5607
Lake Havasu City 10:13:13 -28.0 Dark Down 25.7 193.5 Low 09:59:08 - 10:27:18 5586
Wildwood 10:13:31 -30.6 Dark Down 26.8 189.5 Low 09:59:26 - 10:27:36 5583
Parker 10:13:12 -28.2 Dark Down 26.1 193.6 Low 09:59:07 - 10:27:17 5568
Idyllwild 10:13:23 -29.9 Dark Down 26.9 191.3 Low 09:59:18 - 10:27:28 5558
Blythe 10:13:13 -28.8 Dark Down 26.6 193.3 Low 09:59:08 - 10:27:18 5542
Calipatria 10:13:17 -29.7 Dark Down 27.3 192.5 Low 09:59:12 - 10:27:22 5521
Yuma 10:13:13 -29.5 Dark Down 27.6 193.4 Low 09:59:08 - 10:27:18 5494

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 47932, (2019/04/30 10:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  4.17  98
23Tau Sco      16:35:53.0 -28:12:58  2.8  5.07  96
12 Sco         16:12:16.1 -28:25:03  5.9  0.13 101
PPM 265263     16:12:50.6 -28:07:55  8.4  0.29 101
PPM 265258     16:12:43.6 -28:19:18  9.1  0.10 101
47932          16:12:52.9 -28:25:04 15.4       101
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:53:21 UT

Marc W. Buie, Southwest Research Institute

RECON