RECON: TNO occultation with 437871

Event between (437871) 01FN185 and star GA0820:04602783 with event index number of 198678

Geocentric closest approach at 2019/06/19 08:56:14 UTC

J2000 position of star is 14:52:39.1 -07:55:28
Equinox of date position of star is 14:53:38.2 -07:59:57
Stellar brightness G=17.2, use SENSEUP=128
Star is 68 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 39.5 AU from the Sun and 38.8 AU from the Earth.
The TNO is moving 16.4 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 482 seconds.
The 1-sigma cross-track error in the shadow position is 4506 km.
The sky-plane scale is 28105.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 13.3 sec chord
Diameter=89.3 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 437871, (2019/06/19 08:56UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.3 -11:15:44  1.0 21.80  87
27Bet Lib      15:18:03.4 -09:27:13  2.6  6.19  62
19Del Lib      15:02:00.9 -08:35:42  4.9  2.14  66
PPM 197987     14:53:06.1 -07:28:48  8.4  0.54  69
PPM 197989     14:53:16.6 -07:40:01  9.6  0.35  69
437871         14:53:41.4 -08:00:12 17.2        68
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 1.9 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 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)
Penticton 09:44:33 -13.4 AT Up 6.1 250.1 Really Low 09:29:33 - 09:59:33 5292
Oroville 09:44:30 -13.9 AT Up 6.3 250.3 Really Low 09:29:30 - 09:59:30 5262
Tonasket 09:44:28 -14.1 AT Up 6.4 250.3 Really Low 09:29:28 - 09:59:28 5251
Okanogan 09:44:27 -14.5 AT Up 6.6 250.2 Really Low 09:29:27 - 09:59:27 5235
Brewster 09:44:26 -14.8 AT Up 6.8 250.1 Really Low 09:29:26 - 09:59:26 5222
Manson/Chelan 09:44:25 -15.1 AT Up 7.1 249.8 Really Low 09:29:25 - 09:59:25 5213
Entiat 09:44:25 -15.3 AT Up 7.2 249.8 Really Low 09:29:25 - 09:59:25 5202
Wenatchee 09:44:23 -15.6 AT Up 7.4 249.7 Really Low 09:29:23 - 09:59:23 5189
Ellensburg 09:44:21 -16.0 AT Up 7.7 249.6 Really Low 09:29:21 - 09:59:21 5168
Yakima 09:44:19 -16.4 AT Up 7.8 249.7 Really Low 09:29:19 - 09:59:19 5147
Toppenish/White Swan 09:44:18 -16.5 AT Up 7.8 249.8 Really Low 09:29:18 - 09:59:18 5135
Pasco 09:44:14 -16.3 AT Up 7.0 250.8 Really Low 09:29:14 - 09:59:14 5123
PNWRO 09:44:12 -16.4 AT Up 7.0 251.0 Really Low 09:29:12 - 09:59:12 5108
Goldendale 09:44:14 -17.2 AT Up 8.3 249.5 Really Low 09:29:14 - 09:59:14 5106
George/Umatilla 09:44:13 -16.6 AT Up 7.3 250.6 Really Low 09:29:13 - 09:59:13 5106
The Dalles 09:44:13 -17.5 AT Up 8.6 249.3 Really Low 09:29:13 - 09:59:13 5095
Maupin 09:44:12 -17.8 AT Up 8.7 249.4 Really Low 09:29:12 - 09:59:12 5072
Madras/Culver 09:44:08 -18.3 Dark Up 8.9 249.5 Really Low 09:29:08 - 09:59:08 5041
Sisters 09:44:08 -18.8 Dark Up 9.3 249.2 Really Low 09:29:08 - 09:59:08 5024
Redmond 09:44:08 -18.7 Dark Up 9.1 249.5 Really Low 09:29:08 - 09:59:08 5021
Bend 09:44:06 -18.9 Dark Up 9.2 249.4 Really Low 09:29:06 - 09:59:06 5010
Oregon Observatory 09:44:05 -19.1 Dark Up 9.4 249.3 Really Low 09:29:05 - 09:59:05 5000
La Pine/Gilchrist 09:44:04 -19.3 Dark Up 9.5 249.3 Really Low 09:29:04 - 09:59:04 4988
North Lake 09:44:02 -19.5 Dark Up 9.3 249.8 Really Low 09:29:02 - 09:59:02 4961
Paisley 09:43:57 -19.9 Dark Up 9.2 250.1 Really Low 09:28:57 - 09:58:57 4927
Chiloquin 09:44:00 -20.5 Dark Up 10.2 249.2 Really Low 09:29:00 - 09:59:00 4924
Klamath Falls 09:43:58 -20.7 Dark Up 10.2 249.3 Really Low 09:28:58 - 09:58:58 4903
Lakeview 09:43:55 -20.4 Dark Up 9.3 250.4 Really Low 09:28:55 - 09:58:55 4896
Tulelake 09:43:57 -20.9 Dark Up 10.1 249.6 Really Low 09:28:57 - 09:58:57 4886
Cedarville 09:43:50 -20.9 Dark Up 9.4 250.6 Really Low 09:28:50 - 09:58:50 4855
Fall River/Burney 09:43:50 -21.7 Dark Up 10.4 249.8 Really Low 09:28:50 - 09:58:50 4830
Susanville 09:43:46 -22.1 Dark Up 10.1 250.4 Really Low 09:28:46 - 09:58:46 4787
Greenville 09:43:46 -22.4 Dark Up 10.4 250.2 Really Low 09:28:46 - 09:58:46 4771
Gimple 09:43:46 -22.4 Dark Up 10.3 250.3 Really Low 09:28:46 - 09:58:46 4770
Quincy 09:43:45 -22.6 Dark Up 10.5 250.3 Really Low 09:28:45 - 09:58:45 4758
Portola 09:43:43 -22.6 Dark Up 10.2 250.6 Really Low 09:28:43 - 09:58:43 4748
Reno 09:43:40 -22.6 Dark Up 9.8 251.1 Really Low 09:28:40 - 09:58:40 4728
Carson City 09:43:39 -22.9 Dark Up 9.9 251.2 Really Low 09:28:39 - 09:58:39 4705
Yerington 09:43:37 -22.9 Dark Up 9.5 251.6 Really Low 09:28:37 - 09:58:37 4689
Gardnerville 09:43:36 -23.1 Dark Up 9.9 251.2 Really Low 09:28:36 - 09:58:36 4689
Niwot 09:43:25 -16.2 AT Up -1.2 260.6 Not Up 09:28:25 - 09:58:25 4660
Hawthorne 09:43:32 -23.1 Dark Up 9.3 252.0 Really Low 09:28:32 - 09:58:32 4656
Lee Vining 09:43:32 -23.8 Dark Up 9.8 251.8 Really Low 09:28:32 - 09:58:32 4620
Tonopah 09:43:28 -23.0 Dark Up 8.4 253.0 Really Low 09:28:28 - 09:58:28 4617
Bishop 09:43:26 -24.1 Dark Up 9.5 252.4 Really Low 09:28:26 - 09:58:26 4577
Beatty 09:43:22 -23.9 Dark Up 8.4 253.5 Really Low 09:28:22 - 09:58:22 4536
Lone Pine 09:43:23 -24.6 Dark Up 9.4 252.7 Really Low 09:28:23 - 09:58:23 4522
Indian Springs 09:43:19 -23.7 Dark Up 7.6 254.2 Really Low 09:28:19 - 09:58:19 4507
Henderson 09:43:15 -23.9 Dark Up 7.2 254.7 Really Low 09:28:15 - 09:58:15 4465
CPSLO 09:43:21 -26.7 Dark Up 11.9 251.3 Really Low 09:28:21 - 09:58:21 4444
Searchlight/Boulder City 09:43:11 -24.4 Dark Up 7.4 254.8 Really Low 09:28:11 - 09:58:11 4424
Patrick 09:43:11 -24.0 Dark Up 6.5 255.4 Really Low 09:28:11 - 09:58:11 4413
Laughlin/Bullhead City 09:43:11 -24.5 Dark Up 7.2 255.0 Really Low 09:28:11 - 09:58:11 4400
Kingman/Dolan Springs 09:43:10 -24.3 Dark Up 6.8 255.3 Really Low 09:28:10 - 09:58:10 4398
DCO 09:43:07 -23.9 Dark Up 6.1 255.9 Really Low 09:28:07 - 09:58:07 4386
Mohave Valley 09:43:08 -24.7 Dark Up 7.2 255.0 Really Low 09:28:08 - 09:58:08 4381
Lake Havasu City 09:43:06 -25.0 Dark Up 7.2 255.2 Really Low 09:28:06 - 09:58:06 4350
Wildwood 09:43:11 -27.1 Dark Up 10.6 252.7 Really Low 09:28:11 - 09:58:11 4347
Parker 09:43:05 -25.3 Dark Up 7.2 255.3 Really Low 09:28:05 - 09:58:05 4324
Idyllwild 09:43:07 -26.6 Dark Up 9.3 253.9 Really Low 09:28:07 - 09:58:07 4310
Blythe 09:43:03 -25.8 Dark Up 7.6 255.2 Really Low 09:28:03 - 09:58:03 4288
Calipatria 09:43:02 -26.7 Dark Up 8.5 254.7 Really Low 09:28:02 - 09:58:02 4258
Yuma 09:42:58 -26.7 Dark Up 7.9 255.3 Really Low 09:27:58 - 09:57:58 4219

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 437871, (2019/06/19 08:56UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 21.80  87
27Bet Lib      15:17:00.3 -09:22:59  2.6  6.19  62
19Del Lib      15:00:58.3 -08:31:08  4.9  2.14  66
PPM 197987     14:52:04.0 -07:24:03  8.4  0.54  69
PPM 197989     14:52:14.3 -07:35:17  9.6  0.35  69
437871         14:52:39.1 -07:55:28 17.2        68
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:18:27 UT

Marc W. Buie, Southwest Research Institute

RECON