RECON: TNO occultation with 471155

Event between (471155) 10GF65 and star UC4-282-088819 with event index number of 190156

Geocentric closest approach at 2019/05/18 08:25:34 UTC

J2000 position of star is 16:21:26.3 -33:44:26
Equinox of date position of star is 16:22:36.1 -33:46:55
Stellar brightness R=14.4, use SENSEUP=64
Star is 25 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=20.8

[RECON map]
TNO is 23.2 AU from the Sun and 22.3 AU from the Earth.
The TNO is moving 21.8 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 209 seconds.
The 1-sigma cross-track error in the shadow position is 1450 km.
The sky-plane scale is 16139.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 10.5 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471155, (2019/05/18 08:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9  7.51  21
26Eps Sco      16:51:25.4 -34:19:36  2.3  5.97  30
PPM 295006     16:25:11.9 -33:14:40  6.2  0.75  25
PPM 294980     16:23:49.3 -33:43:11  8.5  0.24  25
471155         16:22:41.7 -33:47:07 14.4        25
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 4.3 sigma about the mid-time.
The median site spacing is 10.8 km RECON observability=0.2 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:26:06 -21.2 Dark Up 7.3 177.9 Really Low 08:11:06 - 08:41:06 10401
Tonasket 08:26:06 -21.4 Dark Up 7.5 177.9 Really Low 08:11:06 - 08:41:06 10398
Okanogan 08:26:06 -21.8 Dark Up 7.9 177.8 Really Low 08:11:06 - 08:41:06 10391
Brewster 08:26:07 -22.0 Dark Up 8.1 177.6 Really Low 08:11:07 - 08:41:07 10385
Manson/Chelan 08:26:08 -22.3 Dark Up 8.3 177.3 Really Low 08:11:08 - 08:41:08 10379
Entiat 08:26:09 -22.5 Dark Up 8.5 177.2 Really Low 08:11:09 - 08:41:09 10375
Wenatchee 08:26:09 -22.8 Dark Up 8.8 177.1 Really Low 08:11:09 - 08:41:09 10370
Ellensburg 08:26:10 -23.2 Dark Up 9.2 176.9 Really Low 08:11:10 - 08:41:10 10360
Pasco 08:26:05 -23.8 Dark Up 10.0 178.1 Really Low 08:11:05 - 08:41:05 10358
PNWRO 08:26:04 -24.0 Dark Up 10.2 178.3 Really Low 08:11:04 - 08:41:04 10355
Yakima 08:26:11 -23.6 Dark Up 9.6 176.9 Really Low 08:11:11 - 08:41:11 10352
Toppenish/White Swan 08:26:09 -23.8 Dark Up 9.8 177.1 Really Low 08:11:09 - 08:41:09 10350
George/Umatilla 08:26:06 -24.2 Dark Up 10.3 177.9 Really Low 08:11:06 - 08:41:06 10350
Goldendale 08:26:11 -24.4 Dark Up 10.4 176.7 Really Low 08:11:11 - 08:41:11 10335
The Dalles 08:26:12 -24.6 Dark Up 10.6 176.4 Really Low 08:11:12 - 08:41:12 10327
Maupin 08:26:12 -25.0 Dark Up 11.0 176.5 Really Low 08:11:12 - 08:41:12 10319
Madras/Culver 08:26:12 -25.6 Dark Up 11.5 176.4 Really Low 08:11:12 - 08:41:12 10306
Redmond 08:26:12 -26.0 Dark Up 11.9 176.4 Really Low 08:11:12 - 08:41:12 10298
Sisters 08:26:14 -26.0 Dark Up 11.8 176.1 Really Low 08:11:14 - 08:41:14 10294
Bend 08:26:13 -26.2 Dark Up 12.1 176.3 Really Low 08:11:13 - 08:41:13 10291
Oregon Observatory 08:26:14 -26.4 Dark Up 12.3 176.2 Really Low 08:11:14 - 08:41:14 10286
La Pine/Gilchrist 08:26:14 -26.6 Dark Up 12.5 176.1 Really Low 08:11:14 - 08:41:14 10280
North Lake 08:26:11 -27.0 Dark Up 12.9 176.6 Really Low 08:11:11 - 08:41:11 10275
Paisley 08:26:10 -27.5 Dark Up 13.5 176.9 Really Low 08:11:10 - 08:41:10 10264
Lakeview 08:26:10 -28.0 Dark Up 14.0 177.1 Really Low 08:11:10 - 08:41:10 10252
Chiloquin 08:26:15 -27.7 Dark Up 13.6 175.8 Really Low 08:11:15 - 08:41:15 10248
Niwot 08:25:13 -26.9 Dark Up 15.4 189.9 Really Low 08:10:13 - 08:40:13 10246
Klamath Falls 08:26:15 -28.0 Dark Up 13.9 175.9 Really Low 08:11:15 - 08:41:15 10239
Cedarville 08:26:09 -28.6 Dark Up 14.7 177.2 Really Low 08:11:09 - 08:41:09 10236
Tulelake 08:26:14 -28.3 Dark Up 14.2 176.1 Really Low 08:11:14 - 08:41:14 10235
Fall River/Burney 08:26:14 -29.2 Dark Up 15.1 176.2 Really Low 08:11:14 - 08:41:14 10210
Susanville 08:26:11 -29.7 Dark Up 15.8 176.8 Really Low 08:11:11 - 08:41:11 10198
Gimple 08:26:12 -30.0 Dark Up 16.0 176.6 Really Low 08:11:12 - 08:41:12 10187
Greenville 08:26:12 -30.0 Dark Up 16.0 176.5 Really Low 08:11:12 - 08:41:12 10187
Portola 08:26:10 -30.3 Dark Up 16.4 176.9 Really Low 08:11:10 - 08:41:10 10181
Quincy 08:26:12 -30.2 Dark Up 16.2 176.5 Really Low 08:11:12 - 08:41:12 10180
Reno 08:26:08 -30.5 Dark Up 16.7 177.5 Really Low 08:11:08 - 08:41:08 10179
Carson City 08:26:08 -30.9 Dark Up 17.0 177.5 Really Low 08:11:08 - 08:41:08 10167
Yerington 08:26:05 -31.0 Dark Up 17.2 178.0 Really Low 08:11:05 - 08:41:05 10167
Gardnerville 08:26:07 -31.1 Dark Up 17.3 177.5 Really Low 08:11:07 - 08:41:07 10160
Hawthorne 08:26:04 -31.4 Dark Up 17.7 178.5 Really Low 08:11:04 - 08:41:04 10156
Tonopah 08:25:58 -31.6 Dark Up 18.2 179.7 Really Low 08:10:58 - 08:40:58 10151
Lee Vining 08:26:06 -32.0 Dark Up 18.3 178.1 Really Low 08:11:06 - 08:41:06 10132
Bishop 08:26:02 -32.5 Dark Up 18.9 178.7 Really Low 08:11:02 - 08:41:02 10117
Beatty 08:25:56 -32.7 Dark Up 19.4 180.1 Really Low 08:10:56 - 08:40:56 10113
Indian Springs 08:25:52 -32.8 Dark Up 19.7 181.0 Really Low 08:10:52 - 08:40:52 10108
Henderson 08:25:49 -33.2 Dark Up 20.2 181.6 Low 08:10:49 - 08:40:49 10092
Lone Pine 08:26:02 -33.2 Dark Up 19.6 179.0 Really Low 08:11:02 - 08:41:02 10092
Patrick 08:25:45 -33.6 Dark Up 20.8 182.6 Low 08:10:45 - 08:40:45 10074
Searchlight/Boulder City 08:25:48 -33.8 Dark Up 20.8 181.7 Low 08:10:48 - 08:40:48 10070
DCO 08:25:42 -33.7 Dark Up 21.1 183.3 Low 08:10:42 - 08:40:42 10065
Kingman/Dolan Springs 08:25:45 -33.9 Dark Up 21.0 182.5 Low 08:10:45 - 08:40:45 10064
Laughlin/Bullhead City 08:25:47 -34.0 Dark Up 21.1 182.0 Low 08:10:47 - 08:40:47 10061
Mohave Valley 08:25:47 -34.3 Dark Up 21.3 182.0 Low 08:10:47 - 08:40:47 10050
Lake Havasu City 08:25:46 -34.6 Dark Up 21.7 182.2 Low 08:10:46 - 08:40:46 10035
Parker 08:25:46 -34.9 Dark Up 22.1 182.3 Low 08:10:46 - 08:40:46 10021
CPSLO 08:26:11 -34.8 Dark Up 20.9 176.7 Low 08:11:11 - 08:41:11 10018
Blythe 08:25:47 -35.5 Dark Up 22.6 182.0 Low 08:10:47 - 08:40:47 9997
Idyllwild 08:25:56 -35.8 Dark Up 22.5 180.1 Low 08:10:56 - 08:40:56 9988
Wildwood 08:26:03 -35.7 Dark Up 22.1 178.5 Low 08:11:03 - 08:41:03 9988
Calipatria 08:25:50 -36.2 Dark Up 23.1 181.2 Low 08:10:50 - 08:40:50 9970
Yuma 08:25:46 -36.4 Dark Up 23.5 182.0 Low 08:10:46 - 08:40:46 9957

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 471155, (2019/05/18 08:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  7.51  21
26Eps Sco      16:50:08.9 -34:17:40  2.3  5.97  30
PPM 295006     16:23:56.8 -33:12:03  6.2  0.75  25
PPM 294980     16:22:33.9 -33:40:32  8.5  0.24  25
471155         16:21:26.3 -33:44:26 14.4        25
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:57:16 UT

Marc W. Buie, Southwest Research Institute

RECON