RECON: TNO occultation with 437871

Event between (437871) 01FN185 and star UC4-411-058896 with event index number of 198678

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

J2000 position of star is 14:52:39.2 -07:55:29
Equinox of date position of star is 14:53:35.2 -07:59:44
Stellar brightness R=14.9, 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 342 seconds.
The 1-sigma cross-track error in the shadow position is 3305 km.
The sky-plane scale is 28105.0 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         14:53:41.5 -08:00:13 14.9        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 2.6 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)
Oroville 08:53:50 -16.6 AT Up 13.8 240.1 Really Low 08:38:50 - 09:08:50 -2679
Tonasket 08:53:50 -16.8 AT Up 14.0 240.1 Really Low 08:38:50 - 09:08:50 -2691
Okanogan 08:53:48 -17.2 AT Up 14.2 240.1 Really Low 08:38:48 - 09:08:48 -2707
Brewster 08:53:47 -17.5 AT Up 14.5 239.9 Really Low 08:38:47 - 09:08:47 -2721
Manson/Chelan 08:53:47 -17.7 AT Up 14.8 239.7 Really Low 08:38:47 - 09:08:47 -2731
Entiat 08:53:46 -18.0 AT Up 14.9 239.7 Really Low 08:38:46 - 09:08:46 -2743
Wenatchee 08:53:45 -18.2 Dark Up 15.1 239.6 Really Low 08:38:45 - 09:08:45 -2756
Ellensburg 08:53:43 -18.7 Dark Up 15.5 239.6 Really Low 08:38:43 - 09:08:43 -2777
Yakima 08:53:42 -19.1 Dark Up 15.7 239.6 Really Low 08:38:42 - 09:08:42 -2799
Toppenish/White Swan 08:53:40 -19.3 Dark Up 15.7 239.8 Really Low 08:38:40 - 09:08:40 -2810
Pasco 08:53:36 -19.2 Dark Up 15.0 240.9 Really Low 08:38:36 - 09:08:36 -2816
PNWRO 08:53:35 -19.4 Dark Up 15.0 241.1 Really Low 08:38:35 - 09:08:35 -2829
George/Umatilla 08:53:35 -19.6 Dark Up 15.3 240.8 Really Low 08:38:35 - 09:08:35 -2834
Goldendale 08:53:39 -19.9 Dark Up 16.2 239.6 Really Low 08:38:39 - 09:08:39 -2840
The Dalles 08:53:39 -20.1 Dark Up 16.6 239.4 Really Low 08:38:39 - 09:08:39 -2853
Maupin 08:53:36 -20.5 Dark Up 16.7 239.5 Really Low 08:38:36 - 09:08:36 -2875
Madras/Culver 08:53:34 -21.1 Dark Up 17.0 239.6 Really Low 08:38:34 - 09:08:34 -2906
Sisters 08:53:34 -21.5 Dark Up 17.5 239.4 Really Low 08:38:34 - 09:08:34 -2924
Redmond 08:53:33 -21.4 Dark Up 17.3 239.7 Really Low 08:38:33 - 09:08:33 -2926
Bend 08:53:32 -21.7 Dark Up 17.5 239.6 Really Low 08:38:32 - 09:08:32 -2938
Oregon Observatory 08:53:31 -21.9 Dark Up 17.6 239.6 Really Low 08:38:31 - 09:08:31 -2948
La Pine/Gilchrist 08:53:31 -22.1 Dark Up 17.8 239.6 Really Low 08:38:31 - 09:08:31 -2959
North Lake 08:53:28 -22.4 Dark Up 17.6 240.2 Really Low 08:38:28 - 09:08:28 -2984
Paisley 08:53:23 -22.9 Dark Up 17.7 240.6 Really Low 08:38:23 - 09:08:23 -3017
Chiloquin 08:53:27 -23.2 Dark Up 18.6 239.6 Really Low 08:38:27 - 09:08:27 -3025
Klamath Falls 08:53:24 -23.5 Dark Up 18.7 239.8 Really Low 08:38:24 - 09:08:24 -3046
Lakeview 08:53:21 -23.4 Dark Up 17.8 240.9 Really Low 08:38:21 - 09:08:21 -3047
Tulelake 08:53:23 -23.8 Dark Up 18.6 240.1 Really Low 08:38:23 - 09:08:23 -3061
Cedarville 08:53:17 -24.0 Dark Up 18.0 241.2 Really Low 08:38:17 - 09:08:17 -3086
Fall River/Burney 08:53:18 -24.6 Dark Up 19.1 240.4 Really Low 08:38:18 - 09:08:18 -3117
Susanville 08:53:13 -25.1 Dark Up 18.9 241.1 Really Low 08:38:13 - 09:08:13 -3156
Greenville 08:53:12 -25.5 Dark Up 19.2 241.0 Really Low 08:38:12 - 09:08:12 -3174
Gimple 08:53:12 -25.4 Dark Up 19.2 241.1 Really Low 08:38:12 - 09:08:12 -3174
Quincy 08:53:12 -25.7 Dark Up 19.3 241.1 Really Low 08:38:12 - 09:08:12 -3187
Portola 08:53:10 -25.7 Dark Up 19.1 241.5 Really Low 08:38:10 - 09:08:10 -3194
Niwot 08:52:36 -21.4 Dark Up 8.3 252.3 Really Low 08:37:36 - 09:07:36 -3210
Reno 08:53:06 -25.9 Dark Up 18.8 242.0 Really Low 08:38:06 - 09:08:06 -3211
Carson City 08:53:05 -26.2 Dark Up 18.9 242.1 Really Low 08:38:05 - 09:08:05 -3234
Yerington 08:53:01 -26.3 Dark Up 18.6 242.7 Really Low 08:38:01 - 09:08:01 -3247
Gardnerville 08:53:04 -26.4 Dark Up 19.0 242.2 Really Low 08:38:04 - 09:08:04 -3250
Hawthorne 08:52:58 -26.6 Dark Up 18.4 243.2 Really Low 08:37:58 - 09:07:58 -3277
Tonopah 08:52:53 -26.8 Dark Up 17.7 244.3 Really Low 08:37:53 - 09:07:53 -3309
Lee Vining 08:52:58 -27.3 Dark Up 19.0 243.0 Really Low 08:37:58 - 09:07:58 -3314
Bishop 08:52:53 -27.7 Dark Up 18.8 243.7 Really Low 08:37:53 - 09:07:53 -3355
Beatty 08:52:46 -27.8 Dark Up 17.8 245.0 Really Low 08:37:46 - 09:07:46 -3388
Lone Pine 08:52:47 -28.4 Dark Up 18.9 244.2 Really Low 08:37:47 - 09:07:47 -3407
Indian Springs 08:52:42 -27.9 Dark Up 17.2 245.8 Really Low 08:37:42 - 09:07:42 -3411
Henderson 08:52:38 -28.2 Dark Up 16.9 246.5 Really Low 08:37:38 - 09:07:38 -3450
Searchlight/Boulder City 08:52:35 -28.7 Dark Up 17.1 246.6 Really Low 08:37:35 - 09:07:35 -3490
Patrick 08:52:32 -28.5 Dark Up 16.3 247.4 Really Low 08:37:32 - 09:07:32 -3496
CPSLO 08:52:50 -30.1 Dark Up 21.4 242.7 Low 08:37:50 - 09:07:50 -3499
Kingman/Dolan Springs 08:52:31 -28.8 Dark Up 16.6 247.3 Really Low 08:37:31 - 09:07:31 -3511
Laughlin/Bullhead City 08:52:33 -28.9 Dark Up 17.0 247.0 Really Low 08:37:33 - 09:07:33 -3512
DCO 08:52:29 -28.6 Dark Up 15.9 247.9 Really Low 08:37:29 - 09:07:29 -3519
Mohave Valley 08:52:31 -29.2 Dark Up 17.1 247.0 Really Low 08:37:31 - 09:07:31 -3532
Lake Havasu City 08:52:30 -29.5 Dark Up 17.1 247.3 Really Low 08:37:30 - 09:07:30 -3561
Wildwood 08:52:39 -30.9 Dark Up 20.4 244.6 Low 08:37:39 - 09:07:39 -3585
Parker 08:52:28 -29.8 Dark Up 17.2 247.4 Really Low 08:37:28 - 09:07:28 -3586
Idyllwild 08:52:32 -30.8 Dark Up 19.2 245.9 Really Low 08:37:32 - 09:07:32 -3612
Blythe 08:52:25 -30.4 Dark Up 17.6 247.4 Really Low 08:37:25 - 09:07:25 -3624
Calipatria 08:52:26 -31.1 Dark Up 18.5 246.9 Really Low 08:37:26 - 09:07:26 -3659
Yuma 08:52:21 -31.3 Dark Up 18.0 247.6 Really Low 08:37:21 - 09:07:21 -3692

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         14:52:39.2 -07:55:29 14.9        68
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:45:47 UT

Marc W. Buie, Southwest Research Institute

RECON