RECON: TNO occultation with 03HF57

Event between 03HF57 and star UC4-360-072800 with event index number of 189638

Geocentric closest approach at 2019/05/13 05:20:44 UTC

J2000 position of star is 15:15:03.9 -18:08:25
Equinox of date position of star is 15:16:03.2 -18:12:14
Stellar brightness R=13.8, use SENSEUP=64
Star is 74 degrees from the moon. Moon is 63% illuminated.
TNO apparent brightness V=23.9

[RECON map]
TNO is 34.6 AU from the Sun and 33.5 AU from the Earth.
The TNO is moving 24.2 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 351 seconds.
The 1-sigma cross-track error in the shadow position is 5661 km.
The sky-plane scale is 24326.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.3 km assuming a 5% albedo -- 4.7 sec chord
Diameter=46.7 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 03HF57, (2019/05/13 05:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9 19.06  92
27Bet Lib      15:18:03.1 -09:27:12  2.6  8.77  71
28 Lib         15:21:59.8 -18:13:39  6.4  1.38  75
26 Lib         15:15:39.5 -17:50:23  6.6  0.39  73
PPM 229984     15:16:56.7 -18:22:34  9.9  0.25  74
03HF57         15:16:09.9 -18:12:40 13.8        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 2.6 sigma about the mid-time.
The median site spacing is 9.7 km RECON observability=0.6 and success probability=4.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 05:23:24 -14.9 AT Up 15.4 143.9 Really Low 05:08:24 - 05:38:24 1188
Tonasket 05:23:24 -15.1 AT Up 15.6 143.9 Really Low 05:08:24 - 05:38:24 1175
Okanogan 05:23:25 -15.3 AT Up 15.8 143.7 Really Low 05:08:25 - 05:38:25 1150
Brewster 05:23:26 -15.4 AT Up 16.0 143.5 Really Low 05:08:26 - 05:38:26 1128
Manson/Chelan 05:23:27 -15.4 AT Up 16.0 143.1 Really Low 05:08:27 - 05:38:27 1105
Entiat 05:23:28 -15.6 AT Up 16.1 143.0 Really Low 05:08:28 - 05:38:28 1089
Wenatchee 05:23:29 -15.7 AT Up 16.3 142.9 Really Low 05:08:29 - 05:38:29 1071
Niwot 05:22:56 -27.6 Dark Up 28.1 155.6 Low 05:07:56 - 05:37:56 1057
Ellensburg 05:23:29 -16.0 AT Up 16.5 142.6 Really Low 05:08:29 - 05:38:29 1039
Pasco 05:23:27 -17.2 AT Up 17.7 143.8 Really Low 05:08:27 - 05:38:27 1033
PNWRO 05:23:27 -17.4 AT Up 18.0 143.9 Really Low 05:08:27 - 05:38:27 1025
Yakima 05:23:30 -16.3 AT Up 16.9 142.5 Really Low 05:08:30 - 05:38:30 1012
George/Umatilla 05:23:28 -17.3 AT Up 17.9 143.5 Really Low 05:08:28 - 05:38:28 1005
Toppenish/White Swan 05:23:30 -16.5 AT Up 17.1 142.7 Really Low 05:08:30 - 05:38:30 1004
Goldendale 05:23:32 -16.8 AT Up 17.4 142.2 Really Low 05:08:32 - 05:38:32 956
The Dalles 05:23:33 -16.8 AT Up 17.4 141.8 Really Low 05:08:33 - 05:38:33 930
Maupin 05:23:33 -17.2 AT Up 17.8 141.8 Really Low 05:08:33 - 05:38:33 906
Madras/Culver 05:23:34 -17.6 AT Up 18.2 141.7 Really Low 05:08:34 - 05:38:34 869
Redmond 05:23:35 -17.8 AT Up 18.4 141.6 Really Low 05:08:35 - 05:38:35 844
Sisters 05:23:36 -17.6 AT Up 18.2 141.2 Really Low 05:08:36 - 05:38:36 833
Bend 05:23:36 -17.9 AT Up 18.5 141.4 Really Low 05:08:36 - 05:38:36 825
Oregon Observatory 05:23:36 -18.0 Dark Up 18.6 141.2 Really Low 05:08:36 - 05:38:36 809
La Pine/Gilchrist 05:23:36 -18.1 Dark Up 18.8 141.2 Really Low 05:08:36 - 05:38:36 794
North Lake 05:23:35 -18.8 Dark Up 19.4 141.6 Really Low 05:08:35 - 05:38:35 783
Paisley 05:23:35 -19.3 Dark Up 20.0 141.8 Really Low 05:08:35 - 05:38:35 757
Lakeview 05:23:35 -19.8 Dark Up 20.4 141.8 Low 05:08:35 - 05:38:35 728
Chiloquin 05:23:39 -18.8 Dark Up 19.5 140.6 Really Low 05:08:39 - 05:38:39 706
Cedarville 05:23:36 -20.4 Dark Up 21.0 141.8 Low 05:08:36 - 05:38:36 688
Klamath Falls 05:23:39 -19.1 Dark Up 19.8 140.6 Really Low 05:08:39 - 05:38:39 685
Tulelake 05:23:38 -19.5 Dark Up 20.1 140.8 Low 05:08:38 - 05:38:38 676
Fall River/Burney 05:23:39 -20.2 Dark Up 20.9 140.7 Low 05:08:39 - 05:38:39 614
Susanville 05:23:38 -21.1 Dark Up 21.7 141.2 Low 05:08:38 - 05:38:38 593
Gimple 05:23:39 -21.2 Dark Up 21.8 140.9 Low 05:08:39 - 05:38:39 566
Greenville 05:23:39 -21.1 Dark Up 21.8 140.8 Low 05:08:39 - 05:38:39 564
Reno 05:23:37 -22.1 Dark Up 22.8 141.7 Low 05:08:37 - 05:38:37 558
Portola 05:23:38 -21.6 Dark Up 22.3 141.2 Low 05:08:38 - 05:38:38 556
Quincy 05:23:40 -21.3 Dark Up 21.9 140.8 Low 05:08:40 - 05:38:40 549
Yerington 05:23:36 -22.9 Dark Up 23.5 142.1 Low 05:08:36 - 05:38:36 539
Tonopah 05:23:32 -24.5 Dark Up 25.2 143.6 Low 05:08:32 - 05:38:32 536
Carson City 05:23:37 -22.4 Dark Up 23.1 141.6 Low 05:08:37 - 05:38:37 533
Hawthorne 05:23:35 -23.5 Dark Up 24.1 142.5 Low 05:08:35 - 05:38:35 523
Gardnerville 05:23:37 -22.6 Dark Up 23.3 141.6 Low 05:08:37 - 05:38:37 516
Indian Springs 05:23:28 -26.5 Dark Up 27.1 144.6 Low 05:08:28 - 05:38:28 478
Lee Vining 05:23:37 -23.7 Dark Up 24.4 141.9 Low 05:08:37 - 05:38:37 466
Beatty 05:23:31 -25.7 Dark Up 26.3 143.7 Low 05:08:31 - 05:38:31 466
Henderson 05:23:27 -27.2 Dark Up 27.8 145.1 Low 05:08:27 - 05:38:27 461
DCO 05:23:22 -28.8 Dark Up 29.4 146.5 Low 05:08:22 - 05:38:22 453
Patrick 05:23:24 -28.3 Dark Up 28.9 145.9 Low 05:08:24 - 05:38:24 452
Bishop 05:23:35 -24.5 Dark Up 25.2 142.3 Low 05:08:35 - 05:38:35 445
Kingman/Dolan Springs 05:23:25 -28.3 Dark Up 29.0 145.7 Low 05:08:25 - 05:38:25 429
Searchlight/Boulder City 05:23:27 -27.7 Dark Up 28.3 144.9 Low 05:08:27 - 05:38:27 420
Laughlin/Bullhead City 05:23:26 -28.1 Dark Up 28.7 145.2 Low 05:08:26 - 05:38:26 409
Lone Pine 05:23:35 -25.3 Dark Up 25.9 142.4 Low 05:08:35 - 05:38:35 399
Mohave Valley 05:23:26 -28.3 Dark Up 29.0 145.1 Low 05:08:26 - 05:38:26 389
Lake Havasu City 05:23:25 -28.8 Dark Up 29.4 145.2 Low 05:08:25 - 05:38:25 367
Parker 05:23:26 -29.1 Dark Up 29.7 145.1 Low 05:08:26 - 05:38:26 341
Blythe 05:23:27 -29.4 Dark Up 30.0 144.7 Up 05:08:27 - 05:38:27 290
Idyllwild 05:23:33 -28.2 Dark Up 28.9 142.7 Low 05:08:33 - 05:38:33 227
Calipatria 05:23:30 -29.3 Dark Up 30.0 143.6 Low 05:08:30 - 05:38:30 220
Yuma 05:23:28 -30.1 Dark Up 30.7 144.3 Up 05:08:28 - 05:38:28 217
CPSLO 05:23:43 -25.0 Dark Up 25.6 139.7 Low 05:08:43 - 05:38:43 210
Wildwood 05:23:39 -27.0 Dark Up 27.6 141.2 Low 05:08:39 - 05:38:39 188

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 03HF57, (2019/05/13 05:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.06  92
27Bet Lib      15:17:00.3 -09:22:59  2.6  8.77  71
28 Lib         15:20:53.7 -18:09:32  6.4  1.38  75
26 Lib         15:14:33.7 -17:46:07  6.6  0.39  73
PPM 229984     15:15:50.7 -18:18:20  9.9  0.25  74
03HF57         15:15:03.9 -18:08:25 13.8        74
Positions are for J2000

Event circumstances last updated at 2017/06/01 18:11:05 UT

Marc W. Buie, Southwest Research Institute

RECON