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 08:25:33 UTC

J2000 position of star is 16:21:26.3 -33:44:26
Equinox of date position of star is 16:22:34.0 -33:46:51
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 175 seconds.
The 1-sigma cross-track error in the shadow position is 1288 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 5.1 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 08:26:05 -21.2 Dark Up 7.3 177.9 Really Low 08:11:05 - 08:41:05 10403
Tonasket 08:26:05 -21.4 Dark Up 7.5 177.9 Really Low 08:11:05 - 08:41:05 10400
Okanogan 08:26:05 -21.8 Dark Up 7.9 177.7 Really Low 08:11:05 - 08:41:05 10394
Brewster 08:26:06 -22.0 Dark Up 8.1 177.6 Really Low 08:11:06 - 08:41:06 10388
Manson/Chelan 08:26:08 -22.3 Dark Up 8.3 177.3 Really Low 08:11:08 - 08:41:08 10382
Entiat 08:26:08 -22.5 Dark Up 8.5 177.2 Really Low 08:11:08 - 08:41:08 10377
Wenatchee 08:26:08 -22.8 Dark Up 8.8 177.1 Really Low 08:11:08 - 08:41:08 10372
Ellensburg 08:26:10 -23.2 Dark Up 9.2 176.9 Really Low 08:11:10 - 08:41:10 10363
Pasco 08:26:04 -23.8 Dark Up 10.0 178.1 Really Low 08:11:04 - 08:41:04 10360
PNWRO 08:26:04 -24.0 Dark Up 10.2 178.3 Really Low 08:11:04 - 08:41:04 10358
Yakima 08:26:10 -23.6 Dark Up 9.6 176.9 Really Low 08:11:10 - 08:41:10 10355
Toppenish/White Swan 08:26:08 -23.8 Dark Up 9.8 177.1 Really Low 08:11:08 - 08:41:08 10353
George/Umatilla 08:26:05 -24.2 Dark Up 10.3 177.9 Really Low 08:11:05 - 08:41:05 10352
Goldendale 08:26:10 -24.4 Dark Up 10.4 176.7 Really Low 08:11:10 - 08:41:10 10338
The Dalles 08:26:11 -24.6 Dark Up 10.6 176.4 Really Low 08:11:11 - 08:41:11 10330
Maupin 08:26:11 -25.0 Dark Up 11.0 176.5 Really Low 08:11:11 - 08:41:11 10322
Madras/Culver 08:26:11 -25.6 Dark Up 11.5 176.4 Really Low 08:11:11 - 08:41:11 10310
Redmond 08:26:11 -26.0 Dark Up 11.9 176.4 Really Low 08:11:11 - 08:41:11 10301
Sisters 08:26:13 -26.0 Dark Up 11.8 176.1 Really Low 08:11:13 - 08:41:13 10298
Bend 08:26:12 -26.2 Dark Up 12.1 176.3 Really Low 08:11:12 - 08:41:12 10295
Oregon Observatory 08:26:12 -26.4 Dark Up 12.3 176.2 Really Low 08:11:12 - 08:41:12 10290
La Pine/Gilchrist 08:26:13 -26.6 Dark Up 12.5 176.1 Really Low 08:11:13 - 08:41:13 10284
North Lake 08:26:11 -27.0 Dark Up 12.9 176.6 Really Low 08:11:11 - 08:41:11 10279
Paisley 08:26:09 -27.5 Dark Up 13.5 176.9 Really Low 08:11:09 - 08:41:09 10268
Lakeview 08:26:08 -28.0 Dark Up 14.0 177.1 Really Low 08:11:08 - 08:41:08 10256
Chiloquin 08:26:15 -27.7 Dark Up 13.6 175.8 Really Low 08:11:15 - 08:41:15 10252
Niwot 08:25:12 -26.9 Dark Up 15.4 189.9 Really Low 08:10:12 - 08:40:12 10247
Klamath Falls 08:26:15 -28.0 Dark Up 13.9 175.9 Really Low 08:11:15 - 08:41:15 10243
Cedarville 08:26:08 -28.6 Dark Up 14.7 177.2 Really Low 08:11:08 - 08:41:08 10240
Tulelake 08:26:13 -28.3 Dark Up 14.2 176.1 Really Low 08:11:13 - 08:41:13 10239
Fall River/Burney 08:26:13 -29.2 Dark Up 15.1 176.2 Really Low 08:11:13 - 08:41:13 10213
Susanville 08:26:11 -29.7 Dark Up 15.8 176.8 Really Low 08:11:11 - 08:41:11 10202
Gimple 08:26:11 -30.0 Dark Up 16.0 176.6 Really Low 08:11:11 - 08:41:11 10191
Greenville 08:26:11 -30.0 Dark Up 16.0 176.5 Really Low 08:11:11 - 08:41:11 10190
Portola 08:26:10 -30.3 Dark Up 16.4 176.9 Really Low 08:11:10 - 08:41:10 10185
Quincy 08:26:11 -30.2 Dark Up 16.2 176.5 Really Low 08:11:11 - 08:41:11 10184
Reno 08:26:07 -30.5 Dark Up 16.7 177.5 Really Low 08:11:07 - 08:41:07 10183
Carson City 08:26:07 -30.9 Dark Up 17.0 177.5 Really Low 08:11:07 - 08:41:07 10171
Yerington 08:26:04 -31.0 Dark Up 17.2 178.0 Really Low 08:11:04 - 08:41:04 10170
Gardnerville 08:26:07 -31.1 Dark Up 17.3 177.5 Really Low 08:11:07 - 08:41:07 10164
Hawthorne 08:26:02 -31.4 Dark Up 17.7 178.5 Really Low 08:11:02 - 08:41:02 10159
Tonopah 08:25:56 -31.6 Dark Up 18.2 179.7 Really Low 08:10:56 - 08:40:56 10155
Lee Vining 08:26:04 -32.0 Dark Up 18.3 178.1 Really Low 08:11:04 - 08:41:04 10136
Bishop 08:26:02 -32.5 Dark Up 18.9 178.7 Really Low 08:11:02 - 08:41:02 10121
Beatty 08:25:55 -32.7 Dark Up 19.4 180.1 Really Low 08:10:55 - 08:40:55 10116
Indian Springs 08:25:50 -32.8 Dark Up 19.7 181.0 Really Low 08:10:50 - 08:40:50 10111
Lone Pine 08:26:00 -33.2 Dark Up 19.6 179.0 Really Low 08:11:00 - 08:41:00 10095
Henderson 08:25:48 -33.2 Dark Up 20.2 181.6 Low 08:10:48 - 08:40:48 10094
Patrick 08:25:43 -33.6 Dark Up 20.8 182.6 Low 08:10:43 - 08:40:43 10076
Searchlight/Boulder City 08:25:47 -33.8 Dark Up 20.8 181.7 Low 08:10:47 - 08:40:47 10073
DCO 08:25:40 -33.7 Dark Up 21.1 183.2 Low 08:10:40 - 08:40:40 10067
Kingman/Dolan Springs 08:25:44 -33.9 Dark Up 21.0 182.5 Low 08:10:44 - 08:40:44 10066
Laughlin/Bullhead City 08:25:46 -34.0 Dark Up 21.1 182.0 Low 08:10:46 - 08:40:46 10062
Mohave Valley 08:25:46 -34.3 Dark Up 21.3 182.0 Low 08:10:46 - 08:40:46 10051
Lake Havasu City 08:25:45 -34.6 Dark Up 21.7 182.2 Low 08:10:45 - 08:40:45 10037
Parker 08:25:44 -34.9 Dark Up 22.1 182.3 Low 08:10:44 - 08:40:44 10022
CPSLO 08:26:11 -34.8 Dark Up 20.9 176.7 Low 08:11:11 - 08:41:11 10021
Blythe 08:25:46 -35.5 Dark Up 22.6 182.0 Low 08:10:46 - 08:40:46 9999
Idyllwild 08:25:54 -35.8 Dark Up 22.5 180.1 Low 08:10:54 - 08:40:54 9992
Wildwood 08:26:02 -35.7 Dark Up 22.1 178.5 Low 08:11:02 - 08:41:02 9991
Calipatria 08:25:49 -36.2 Dark Up 23.1 181.2 Low 08:10:49 - 08:40:49 9972
Yuma 08:25:46 -36.4 Dark Up 23.5 182.0 Low 08:10:46 - 08:40:46 9958

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      16:50:09.0 -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 2017/06/01 18:13:51 UT

Marc W. Buie, Southwest Research Institute

RECON