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 05:20:48 UTC

J2000 position of star is 15:15:03.9 -18:08:25
Equinox of date position of star is 15:16:05.0 -18:12:21
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 9.8 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 05:23:28 -14.9 AT Up 15.4 144.0 Really Low 05:08:28 - 05:38:28 1183
Tonasket 05:23:28 -15.1 AT Up 15.6 143.9 Really Low 05:08:28 - 05:38:28 1169
Okanogan 05:23:29 -15.3 AT Up 15.8 143.7 Really Low 05:08:29 - 05:38:29 1145
Brewster 05:23:30 -15.4 AT Up 16.0 143.5 Really Low 05:08:30 - 05:38:30 1122
Manson/Chelan 05:23:31 -15.4 AT Up 16.0 143.1 Really Low 05:08:31 - 05:38:31 1099
Entiat 05:23:32 -15.6 AT Up 16.1 143.0 Really Low 05:08:32 - 05:38:32 1084
Wenatchee 05:23:32 -15.7 AT Up 16.3 142.9 Really Low 05:08:32 - 05:38:32 1065
Niwot 05:23:00 -27.6 Dark Up 28.1 155.7 Low 05:08:00 - 05:38:00 1050
Ellensburg 05:23:33 -16.0 AT Up 16.6 142.6 Really Low 05:08:33 - 05:38:33 1033
Pasco 05:23:31 -17.2 AT Up 17.7 143.8 Really Low 05:08:31 - 05:38:31 1028
PNWRO 05:23:31 -17.5 AT Up 18.0 143.9 Really Low 05:08:31 - 05:38:31 1019
Yakima 05:23:34 -16.3 AT Up 16.9 142.6 Really Low 05:08:34 - 05:38:34 1006
George/Umatilla 05:23:32 -17.3 AT Up 17.9 143.5 Really Low 05:08:32 - 05:38:32 1000
Toppenish/White Swan 05:23:34 -16.5 AT Up 17.1 142.7 Really Low 05:08:34 - 05:38:34 998
Goldendale 05:23:36 -16.8 AT Up 17.4 142.2 Really Low 05:08:36 - 05:38:36 950
The Dalles 05:23:37 -16.8 AT Up 17.4 141.8 Really Low 05:08:37 - 05:38:37 924
Maupin 05:23:37 -17.2 AT Up 17.8 141.8 Really Low 05:08:37 - 05:38:37 900
Madras/Culver 05:23:38 -17.6 AT Up 18.2 141.7 Really Low 05:08:38 - 05:38:38 862
Redmond 05:23:39 -17.8 AT Up 18.4 141.6 Really Low 05:08:39 - 05:38:39 837
Sisters 05:23:40 -17.6 AT Up 18.2 141.2 Really Low 05:08:40 - 05:38:40 826
Bend 05:23:39 -17.9 AT Up 18.5 141.4 Really Low 05:08:39 - 05:38:39 818
Oregon Observatory 05:23:40 -18.0 Dark Up 18.6 141.3 Really Low 05:08:40 - 05:38:40 802
La Pine/Gilchrist 05:23:40 -18.1 Dark Up 18.8 141.2 Really Low 05:08:40 - 05:38:40 787
North Lake 05:23:39 -18.8 Dark Up 19.4 141.6 Really Low 05:08:39 - 05:38:39 776
Paisley 05:23:39 -19.4 Dark Up 20.0 141.8 Really Low 05:08:39 - 05:38:39 749
Lakeview 05:23:39 -19.8 Dark Up 20.5 141.9 Low 05:08:39 - 05:38:39 720
Chiloquin 05:23:43 -18.8 Dark Up 19.5 140.6 Really Low 05:08:43 - 05:38:43 699
Cedarville 05:23:40 -20.4 Dark Up 21.1 141.9 Low 05:08:40 - 05:38:40 680
Klamath Falls 05:23:43 -19.1 Dark Up 19.8 140.6 Really Low 05:08:43 - 05:38:43 678
Tulelake 05:23:42 -19.5 Dark Up 20.1 140.8 Low 05:08:42 - 05:38:42 668
Fall River/Burney 05:23:43 -20.2 Dark Up 20.9 140.7 Low 05:08:43 - 05:38:43 607
Susanville 05:23:42 -21.1 Dark Up 21.7 141.2 Low 05:08:42 - 05:38:42 586
Gimple 05:23:43 -21.2 Dark Up 21.8 140.9 Low 05:08:43 - 05:38:43 559
Greenville 05:23:43 -21.1 Dark Up 21.8 140.8 Low 05:08:43 - 05:38:43 556
Reno 05:23:41 -22.1 Dark Up 22.8 141.7 Low 05:08:41 - 05:38:41 550
Portola 05:23:42 -21.6 Dark Up 22.3 141.2 Low 05:08:42 - 05:38:42 548
Quincy 05:23:43 -21.3 Dark Up 21.9 140.8 Low 05:08:43 - 05:38:43 542
Yerington 05:23:40 -22.9 Dark Up 23.5 142.1 Low 05:08:40 - 05:38:40 532
Tonopah 05:23:36 -24.6 Dark Up 25.2 143.6 Low 05:08:36 - 05:38:36 528
Carson City 05:23:41 -22.4 Dark Up 23.1 141.6 Low 05:08:41 - 05:38:41 525
Hawthorne 05:23:39 -23.5 Dark Up 24.1 142.5 Low 05:08:39 - 05:38:39 516
Gardnerville 05:23:41 -22.6 Dark Up 23.3 141.6 Low 05:08:41 - 05:38:41 509
Indian Springs 05:23:33 -26.5 Dark Up 27.1 144.6 Low 05:08:33 - 05:38:33 470
Beatty 05:23:35 -25.7 Dark Up 26.3 143.7 Low 05:08:35 - 05:38:35 458
Lee Vining 05:23:40 -23.7 Dark Up 24.4 141.9 Low 05:08:40 - 05:38:40 458
Henderson 05:23:31 -27.2 Dark Up 27.9 145.1 Low 05:08:31 - 05:38:31 454
DCO 05:23:26 -28.8 Dark Up 29.5 146.5 Low 05:08:26 - 05:38:26 446
Patrick 05:23:28 -28.3 Dark Up 28.9 145.9 Low 05:08:28 - 05:38:28 444
Bishop 05:23:39 -24.5 Dark Up 25.2 142.4 Low 05:08:39 - 05:38:39 438
Kingman/Dolan Springs 05:23:29 -28.4 Dark Up 29.0 145.7 Low 05:08:29 - 05:38:29 421
Searchlight/Boulder City 05:23:31 -27.7 Dark Up 28.4 145.0 Low 05:08:31 - 05:38:31 413
Laughlin/Bullhead City 05:23:30 -28.1 Dark Up 28.8 145.2 Low 05:08:30 - 05:38:30 402
Lone Pine 05:23:39 -25.3 Dark Up 25.9 142.4 Low 05:08:39 - 05:38:39 392
Mohave Valley 05:23:30 -28.4 Dark Up 29.0 145.1 Low 05:08:30 - 05:38:30 382
Lake Havasu City 05:23:30 -28.8 Dark Up 29.4 145.2 Low 05:08:30 - 05:38:30 360
Parker 05:23:30 -29.1 Dark Up 29.7 145.1 Low 05:08:30 - 05:38:30 334
Blythe 05:23:31 -29.4 Dark Up 30.0 144.7 Up 05:08:31 - 05:38:31 283
Idyllwild 05:23:37 -28.2 Dark Up 28.9 142.8 Low 05:08:37 - 05:38:37 218
Calipatria 05:23:34 -29.3 Dark Up 30.0 143.6 Low 05:08:34 - 05:38:34 212
Yuma 05:23:32 -30.1 Dark Up 30.8 144.3 Up 05:08:32 - 05:38:32 210
CPSLO 05:23:47 -25.0 Dark Up 25.7 139.8 Low 05:08:47 - 05:38:47 203
Wildwood 05:23:43 -27.0 Dark Up 27.7 141.2 Low 05:08:43 - 05:38:43 181

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 2017/12/06 18:55:32 UT

Marc W. Buie, Southwest Research Institute

RECON