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 05:24:22 UTC

J2000 position of star is 15:15:03.9 -18:08:25
Equinox of date position of star is 15:16:05.6 -18:12:23
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 252 seconds.
The 1-sigma cross-track error in the shadow position is 4059 km.
The sky-plane scale is 24326.3 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 05:24UT)
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 3.6 sigma about the mid-time.
The median site spacing is 9.5 km RECON observability=0.6 and success probability=5.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 05:26:59 -15.2 AT Up 15.8 144.7 Really Low 05:11:59 - 05:41:59 1838
Tonasket 05:27:00 -15.4 AT Up 16.0 144.7 Really Low 05:12:00 - 05:42:00 1824
Okanogan 05:27:01 -15.6 AT Up 16.2 144.5 Really Low 05:12:01 - 05:42:01 1800
Brewster 05:27:02 -15.8 AT Up 16.3 144.3 Really Low 05:12:02 - 05:42:02 1778
Manson/Chelan 05:27:03 -15.8 AT Up 16.4 143.9 Really Low 05:12:03 - 05:42:03 1755
Entiat 05:27:03 -15.9 AT Up 16.5 143.8 Really Low 05:12:03 - 05:42:03 1739
Wenatchee 05:27:04 -16.1 AT Up 16.7 143.7 Really Low 05:12:04 - 05:42:04 1720
Niwot 05:26:30 -27.9 Dark Up 28.4 156.6 Low 05:11:30 - 05:41:30 1706
Ellensburg 05:27:05 -16.3 AT Up 16.9 143.4 Really Low 05:12:05 - 05:42:05 1688
Pasco 05:27:03 -17.5 AT Up 18.1 144.6 Really Low 05:12:03 - 05:42:03 1684
PNWRO 05:27:02 -17.8 AT Up 18.4 144.7 Really Low 05:12:02 - 05:42:02 1675
Yakima 05:27:05 -16.7 AT Up 17.2 143.3 Really Low 05:12:05 - 05:42:05 1663
George/Umatilla 05:27:03 -17.7 AT Up 18.3 144.3 Really Low 05:12:03 - 05:42:03 1656
Toppenish/White Swan 05:27:06 -16.9 AT Up 17.5 143.5 Really Low 05:12:06 - 05:42:06 1654
Goldendale 05:27:07 -17.2 AT Up 17.7 143.0 Really Low 05:12:07 - 05:42:07 1606
The Dalles 05:27:08 -17.2 AT Up 17.8 142.6 Really Low 05:12:08 - 05:42:08 1581
Maupin 05:27:08 -17.6 AT Up 18.2 142.6 Really Low 05:12:08 - 05:42:08 1557
Madras/Culver 05:27:09 -18.0 AT Up 18.6 142.5 Really Low 05:12:09 - 05:42:09 1519
Redmond 05:27:10 -18.2 Dark Up 18.8 142.4 Really Low 05:12:10 - 05:42:10 1494
Sisters 05:27:11 -18.0 Dark Up 18.6 142.0 Really Low 05:12:11 - 05:42:11 1483
Bend 05:27:10 -18.3 Dark Up 18.9 142.2 Really Low 05:12:10 - 05:42:10 1476
Oregon Observatory 05:27:11 -18.4 Dark Up 19.0 142.0 Really Low 05:12:11 - 05:42:11 1460
La Pine/Gilchrist 05:27:12 -18.5 Dark Up 19.2 141.9 Really Low 05:12:12 - 05:42:12 1444
North Lake 05:27:11 -19.2 Dark Up 19.8 142.4 Really Low 05:12:11 - 05:42:11 1434
Paisley 05:27:10 -19.8 Dark Up 20.4 142.6 Low 05:12:10 - 05:42:10 1407
Lakeview 05:27:11 -20.2 Dark Up 20.9 142.6 Low 05:12:11 - 05:42:11 1379
Chiloquin 05:27:14 -19.3 Dark Up 19.9 141.4 Really Low 05:12:14 - 05:42:14 1357
Cedarville 05:27:11 -20.8 Dark Up 21.5 142.6 Low 05:12:11 - 05:42:11 1339
Klamath Falls 05:27:14 -19.6 Dark Up 20.2 141.4 Low 05:12:14 - 05:42:14 1336
Tulelake 05:27:14 -19.9 Dark Up 20.5 141.6 Low 05:12:14 - 05:42:14 1327
Fall River/Burney 05:27:14 -20.6 Dark Up 21.3 141.5 Low 05:12:14 - 05:42:14 1266
Susanville 05:27:13 -21.5 Dark Up 22.1 142.0 Low 05:12:13 - 05:42:13 1245
Gimple 05:27:14 -21.6 Dark Up 22.2 141.7 Low 05:12:14 - 05:42:14 1218
Greenville 05:27:14 -21.6 Dark Up 22.2 141.6 Low 05:12:14 - 05:42:14 1215
Reno 05:27:12 -22.6 Dark Up 23.2 142.5 Low 05:12:12 - 05:42:12 1210
Portola 05:27:13 -22.0 Dark Up 22.7 142.0 Low 05:12:13 - 05:42:13 1208
Quincy 05:27:14 -21.7 Dark Up 22.4 141.6 Low 05:12:14 - 05:42:14 1201
Yerington 05:27:11 -23.3 Dark Up 23.9 142.9 Low 05:12:11 - 05:42:11 1191
Tonopah 05:27:07 -25.0 Dark Up 25.6 144.4 Low 05:12:07 - 05:42:07 1188
Carson City 05:27:12 -22.9 Dark Up 23.5 142.4 Low 05:12:12 - 05:42:12 1184
Hawthorne 05:27:10 -23.9 Dark Up 24.6 143.3 Low 05:12:10 - 05:42:10 1175
Gardnerville 05:27:12 -23.1 Dark Up 23.7 142.4 Low 05:12:12 - 05:42:12 1168
Indian Springs 05:27:03 -26.9 Dark Up 27.5 145.4 Low 05:12:03 - 05:42:03 1130
Beatty 05:27:06 -26.1 Dark Up 26.7 144.5 Low 05:12:06 - 05:42:06 1118
Lee Vining 05:27:12 -24.1 Dark Up 24.8 142.7 Low 05:12:12 - 05:42:12 1117
Henderson 05:27:02 -27.6 Dark Up 28.3 145.9 Low 05:12:02 - 05:42:02 1114
DCO 05:26:57 -29.2 Dark Up 29.8 147.4 Low 05:11:57 - 05:41:57 1105
Patrick 05:26:59 -28.7 Dark Up 29.3 146.8 Low 05:11:59 - 05:41:59 1104
Bishop 05:27:10 -25.0 Dark Up 25.6 143.2 Low 05:12:10 - 05:42:10 1097
Kingman/Dolan Springs 05:26:59 -28.8 Dark Up 29.4 146.5 Low 05:11:59 - 05:41:59 1081
Searchlight/Boulder City 05:27:02 -28.1 Dark Up 28.8 145.8 Low 05:12:02 - 05:42:02 1073
Laughlin/Bullhead City 05:27:01 -28.5 Dark Up 29.2 146.0 Low 05:12:01 - 05:42:01 1062
Lone Pine 05:27:10 -25.7 Dark Up 26.4 143.2 Low 05:12:10 - 05:42:10 1052
Mohave Valley 05:27:01 -28.8 Dark Up 29.4 145.9 Low 05:12:01 - 05:42:01 1042
Lake Havasu City 05:27:01 -29.2 Dark Up 29.8 146.1 Low 05:12:01 - 05:42:01 1020
Parker 05:27:01 -29.5 Dark Up 30.1 146.0 Up 05:12:01 - 05:42:01 994
Blythe 05:27:02 -29.8 Dark Up 30.4 145.5 Up 05:12:02 - 05:42:02 944
Idyllwild 05:27:08 -28.7 Dark Up 29.3 143.6 Low 05:12:08 - 05:42:08 879
Calipatria 05:27:05 -29.8 Dark Up 30.4 144.5 Up 05:12:05 - 05:42:05 873
Yuma 05:27:03 -30.5 Dark Up 31.2 145.2 Up 05:12:03 - 05:42:03 871
CPSLO 05:27:18 -25.4 Dark Up 26.1 140.5 Low 05:12:18 - 05:42:18 864
Wildwood 05:27:14 -27.4 Dark Up 28.1 142.0 Low 05:12:14 - 05:42:14 842

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 05:24UT)
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 2018/02/15 18:03:33 UT

Marc W. Buie, Southwest Research Institute

RECON