RECON: TNO occultation with 14HT199

Event between 14HT199 and star UC4-369-072902 with event index number of 256187

Geocentric closest approach at 2020/04/16 10:04:58 UTC

J2000 position of star is 15:54:21.7 -16:22:45
Equinox of date position of star is 15:55:24.1 -16:25:56
Stellar brightness R=15.4, use SENSEUP=128
Star is 74 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 29.9 AU from the Sun and 29.0 AU from the Earth.
The TNO is moving 18.6 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 371 seconds.
The 1-sigma cross-track error in the shadow position is 5726 km.
The sky-plane scale is 21060.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 11.5 sec chord
Diameter=87.7 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 14HT199, (2020/04/16 10:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.3 -26:28:31  0.9 12.94  64
8Bet1Sco       16:06:37.2 -19:51:34  2.6  4.32  71
46The Lib      15:54:59.0 -16:47:15  4.3  0.37  74
PPM 230994     15:58:14.3 -16:05:32  6.5  0.74  73
PPM 230940     15:56:08.6 -16:25:11  8.9  0.15  74
14HT199        15:55:30.9 -16:26:16 15.4        74
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 2.4 sigma about the mid-time.
The median site spacing is 12.9 km RECON observability=1.0 and success probability=4.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:06:02 -24.3 Dark Down 24.7 178.4 Low 09:51:02 - 10:21:02 3573
Tonasket 10:06:02 -24.5 Dark Down 24.9 178.4 Low 09:51:02 - 10:21:02 3562
Okanogan 10:06:03 -24.8 Dark Down 25.2 178.3 Low 09:51:03 - 10:21:03 3544
Brewster 10:06:04 -25.1 Dark Down 25.5 178.0 Low 09:51:04 - 10:21:04 3528
Manson/Chelan 10:06:04 -25.4 Dark Down 25.7 177.6 Low 09:51:04 - 10:21:04 3513
Entiat 10:06:06 -25.6 Dark Down 25.9 177.6 Low 09:51:06 - 10:21:06 3501
Wenatchee 10:06:06 -25.9 Dark Down 26.2 177.5 Low 09:51:06 - 10:21:06 3488
Ellensburg 10:06:06 -26.3 Dark Down 26.6 177.2 Low 09:51:06 - 10:21:06 3464
Pasco 10:06:00 -26.4 Dark Down 27.4 178.7 Low 09:51:00 - 10:21:00 3448
Yakima 10:06:06 -26.7 Dark Down 27.0 177.2 Low 09:51:06 - 10:21:06 3443
PNWRO 10:05:59 -26.5 Dark Down 27.6 178.9 Low 09:50:59 - 10:20:59 3439
Toppenish/White Swan 10:06:06 -26.8 Dark Down 27.2 177.4 Low 09:51:06 - 10:21:06 3435
George/Umatilla 10:06:01 -26.7 Dark Down 27.7 178.5 Low 09:51:01 - 10:21:01 3428
Goldendale 10:06:06 -27.4 Dark Down 27.7 176.9 Low 09:51:06 - 10:21:06 3400
The Dalles 10:06:06 -27.7 Dark Down 28.0 176.5 Low 09:51:06 - 10:21:06 3383
Maupin 10:06:06 -28.0 Dark Down 28.4 176.6 Low 09:51:06 - 10:21:06 3363
Madras/Culver 10:06:06 -28.5 Dark Down 28.9 176.5 Low 09:51:06 - 10:21:06 3333
Redmond 10:06:06 -28.8 Dark Down 29.3 176.5 Low 09:51:06 - 10:21:06 3313
Sisters 10:06:06 -28.9 Dark Down 29.2 176.0 Low 09:51:06 - 10:21:06 3308
Bend 10:06:06 -29.0 Dark Down 29.5 176.3 Low 09:51:06 - 10:21:06 3299
Niwot 10:04:56 -23.9 Dark Up 32.3 194.2 Up 09:49:56 - 10:19:56 3294
Oregon Observatory 10:06:06 -29.2 Dark Down 29.7 176.1 Low 09:51:06 - 10:21:06 3287
La Pine/Gilchrist 10:06:06 -29.4 Dark Down 29.9 176.1 Low 09:51:06 - 10:21:06 3275
North Lake 10:06:06 -29.5 Dark Down 30.3 176.7 Up 09:51:06 - 10:21:06 3260
Paisley 10:06:04 -29.8 Dark Down 30.9 177.1 Up 09:51:04 - 10:21:04 3235
Lakeview 10:06:04 -30.2 Dark Down 31.4 177.3 Up 09:51:04 - 10:21:04 3209
Chiloquin 10:06:06 -30.5 Dark Down 30.9 175.6 Up 09:51:06 - 10:21:06 3207
Klamath Falls 10:06:06 -30.7 Dark Down 31.3 175.7 Up 09:51:06 - 10:21:06 3188
Tulelake 10:06:06 -30.8 Dark Down 31.6 176.0 Up 09:51:06 - 10:21:06 3177
Cedarville 10:06:03 -30.6 Dark Down 32.1 177.5 Up 09:51:03 - 10:21:03 3174
Fall River/Burney 10:06:06 -31.5 Dark Down 32.5 176.1 Up 09:51:06 - 10:21:06 3125
Susanville 10:06:05 -31.7 Dark Down 33.1 176.9 Up 09:51:05 - 10:21:05 3100
Gimple 10:06:05 -32.0 Dark Down 33.4 176.6 Up 09:51:05 - 10:21:05 3079
Greenville 10:06:06 -32.1 Dark Down 33.4 176.5 Up 09:51:06 - 10:21:06 3078
Portola 10:06:03 -32.1 Dark Down 33.8 177.1 Up 09:51:03 - 10:21:03 3066
Quincy 10:06:06 -32.2 Dark Down 33.6 176.5 Up 09:51:06 - 10:21:06 3066
Reno 10:06:00 -32.0 Dark Down 34.0 177.8 Up 09:51:00 - 10:21:00 3061
Carson City 10:06:00 -32.3 Dark Down 34.4 177.8 Up 09:51:00 - 10:21:00 3039
Yerington 10:05:57 -32.2 Dark Down 34.6 178.5 Up 09:50:57 - 10:20:57 3037
Gardnerville 10:06:00 -32.5 Dark Down 34.7 177.9 Up 09:51:00 - 10:21:00 3024
Hawthorne 10:05:54 -32.3 Dark Down 35.1 179.1 Up 09:50:54 - 10:20:54 3017
Tonopah 10:05:48 -31.9 Dark Down 35.6 180.8 Up 09:50:48 - 10:20:48 3010
Lee Vining 10:05:56 -33.0 Dark Down 35.6 178.6 Up 09:50:56 - 10:20:56 2973
Bishop 10:05:53 -33.1 Dark Down 36.3 179.4 Up 09:50:53 - 10:20:53 2947
Beatty 10:05:45 -32.6 Dark Down 36.7 181.3 Up 09:50:45 - 10:20:45 2943
Indian Springs 10:05:40 -32.2 Dark Down 37.0 182.6 Up 09:50:40 - 10:20:40 2939
Henderson 10:05:36 -32.3 Dark Down 37.5 183.4 Up 09:50:36 - 10:20:36 2915
Lone Pine 10:05:50 -33.5 Dark Down 37.0 179.8 Up 09:50:50 - 10:20:50 2903
Patrick 10:05:30 -32.1 Dark Up 38.1 184.8 Up 09:50:30 - 10:20:30 2890
DCO 10:05:27 -31.9 Dark Up 38.3 185.7 Up 09:50:27 - 10:20:27 2881
Searchlight/Boulder City 10:05:35 -32.6 Dark Down 38.1 183.5 Up 09:50:35 - 10:20:35 2878
Kingman/Dolan Springs 10:05:31 -32.3 Dark Up 38.3 184.6 Up 09:50:31 - 10:20:31 2873
Laughlin/Bullhead City 10:05:33 -32.7 Dark Down 38.4 184.0 Up 09:50:33 - 10:20:33 2863
Mohave Valley 10:05:33 -32.8 Dark Down 38.6 184.0 Up 09:50:33 - 10:20:33 2845
Lake Havasu City 10:05:32 -33.0 Dark Up 39.0 184.3 Up 09:50:32 - 10:20:32 2822
Parker 10:05:31 -33.2 Dark Up 39.4 184.4 Up 09:50:31 - 10:20:31 2798
CPSLO 10:06:02 -35.8 Dark Down 38.3 176.7 Up 09:51:02 - 10:21:02 2771
Blythe 10:05:33 -33.8 Dark Up 39.9 184.0 Up 09:50:33 - 10:20:33 2757
Idyllwild 10:05:43 -34.9 Dark Down 39.9 181.4 Up 09:50:43 - 10:20:43 2731
Wildwood 10:05:51 -35.7 Dark Down 39.5 179.1 Up 09:50:51 - 10:20:51 2724
Calipatria 10:05:37 -34.7 Dark Up 40.4 182.9 Up 09:50:37 - 10:20:37 2708
Yuma 10:05:32 -34.4 Dark Up 40.8 184.0 Up 09:50:32 - 10:20:32 2692

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 14HT199, (2020/04/16 10:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.94  64
8Bet1Sco       16:05:26.2 -19:48:20  2.6  4.32  71
46The Lib      15:53:49.7 -16:43:43  4.3  0.37  74
PPM 230994     15:57:05.2 -16:02:05  6.5  0.74  73
PPM 230940     15:54:59.4 -16:21:41  8.9  0.15  74
14HT199        15:54:21.7 -16:22:45 15.4        74
Positions are for J2000

Event circumstances last updated at 2018/04/15 00:15:40 UT

Marc W. Buie, Southwest Research Institute

RECON