RECON: TNO occultation with 38628

Event between (38628) Huya and star GA0820:05176814 with event index number of 204277

Geocentric closest approach at 2019/07/08 09:10:03 UTC

J2000 position of star is 16:31:56.9 -06:04:25
Equinox of date position of star is 16:32:56.0 -06:06:43
Stellar brightness G=12.7, use SENSEUP=16
Star is 65 degrees from the moon. Moon is 38% illuminated.
TNO apparent brightness V=19.5

[RECON map]
TNO is 28.7 AU from the Sun and 27.9 AU from the Earth.
The TNO is moving 17.3 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 111 seconds.
The 1-sigma cross-track error in the shadow position is 1026 km.
The sky-plane scale is 20229.6 km/arcsec.

The TNO has an absolute magnitude Hv=4.8
Diameter=660.7 km assuming a 5% albedo -- 38.3 sec chord
Diameter=269.7 km assuming a 30% albedo -- 15.6 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 38628, (2019/07/08 09:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.4 -26:28:25  0.9 20.37  69
13Zet Oph      16:38:14.1 -10:36:19  2.6  4.67  67
PPM 199844     16:39:04.4 -06:34:34  6.4  1.58  67
PPM 199789     16:35:30.9 -06:10:32  8.4  0.63  66
PPM 199743     16:33:02.1 -06:12:18  9.5  0.09  65
38628          16:32:59.5 -06:06:51 12.7        65
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 5.0 sigma about the mid-time.
The median site spacing is 23.5 km RECON observability=0.7 and success probability=26.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 09:06:42 -16.6 AT Down 16.7 238.5 Really Low 08:56:56 - 09:16:28 1717
Oroville 09:06:40 -17.2 AT Down 17.0 238.7 Really Low 08:56:54 - 09:16:26 1671
Tonasket 09:06:39 -17.4 AT Down 17.1 238.8 Really Low 08:56:53 - 09:16:25 1653
Okanogan 09:06:39 -17.7 AT Down 17.4 238.7 Really Low 08:56:53 - 09:16:25 1630
Brewster 09:06:38 -18.0 Dark Down 17.6 238.6 Really Low 08:56:52 - 09:16:24 1611
Manson/Chelan 09:06:38 -18.3 Dark Down 18.0 238.4 Really Low 08:56:52 - 09:16:24 1600
Entiat 09:06:38 -18.5 Dark Down 18.1 238.4 Really Low 08:56:52 - 09:16:24 1584
Wenatchee 09:06:37 -18.8 Dark Down 18.3 238.4 Really Low 08:56:51 - 09:16:23 1565
Ellensburg 09:06:36 -19.2 Dark Down 18.7 238.3 Really Low 08:56:50 - 09:16:22 1536
Yakima 09:06:35 -19.6 Dark Down 18.9 238.4 Really Low 08:56:49 - 09:16:21 1505
Toppenish/White Swan 09:06:34 -19.8 Dark Down 18.9 238.6 Really Low 08:56:48 - 09:16:20 1486
Pasco 09:06:30 -19.7 Dark Down 18.2 239.7 Really Low 08:56:44 - 09:16:16 1462
Goldendale 09:06:33 -20.4 Dark Down 19.4 238.4 Really Low 08:56:47 - 09:16:19 1448
PNWRO 09:06:29 -19.9 Dark Down 18.2 239.9 Really Low 08:56:43 - 09:16:15 1439
George/Umatilla 09:06:30 -20.1 Dark Down 18.5 239.6 Really Low 08:56:44 - 09:16:16 1438
The Dalles 09:06:33 -20.7 Dark Down 19.8 238.1 Really Low 08:56:47 - 09:16:19 1434
Maupin 09:06:32 -21.1 Dark Down 19.9 238.4 Really Low 08:56:46 - 09:16:18 1400
Madras/Culver 09:06:30 -21.6 Dark Down 20.2 238.5 Low 08:56:44 - 09:16:16 1357
Sisters 09:06:30 -22.0 Dark Down 20.7 238.2 Low 08:56:44 - 09:16:16 1335
Redmond 09:06:29 -22.0 Dark Down 20.5 238.6 Low 08:56:43 - 09:16:15 1328
Bend 09:06:29 -22.2 Dark Down 20.7 238.5 Low 08:56:43 - 09:16:15 1313
Oregon Observatory 09:06:28 -22.4 Dark Down 20.8 238.5 Low 08:56:42 - 09:16:14 1300
La Pine/Gilchrist 09:06:28 -22.6 Dark Down 21.0 238.5 Low 08:56:42 - 09:16:14 1284
North Lake 09:06:25 -22.9 Dark Down 20.8 239.1 Low 08:56:39 - 09:16:11 1242
Chiloquin 09:06:26 -23.8 Dark Down 21.8 238.5 Low 08:56:40 - 09:16:12 1198
Paisley 09:06:22 -23.4 Dark Down 20.9 239.6 Low 08:56:36 - 09:16:08 1192
Klamath Falls 09:06:24 -24.1 Dark Down 21.9 238.7 Low 08:56:38 - 09:16:10 1168
Lakeview 09:06:20 -23.9 Dark Down 21.0 239.9 Low 08:56:34 - 09:16:06 1147
Tulelake 09:06:23 -24.3 Dark Down 21.9 239.1 Low 08:56:37 - 09:16:09 1142
Cedarville 09:06:18 -24.5 Dark Down 21.3 240.2 Low 08:56:32 - 09:16:04 1090
Fall River/Burney 09:06:20 -25.2 Dark Down 22.3 239.4 Low 08:56:34 - 09:16:06 1065
Susanville 09:06:17 -25.6 Dark Down 22.1 240.2 Low 08:56:31 - 09:16:03 1002
Greenville 09:06:17 -26.0 Dark Down 22.5 240.1 Low 08:56:31 - 09:16:03 982
Gimple 09:06:16 -25.9 Dark Down 22.4 240.2 Low 08:56:30 - 09:16:02 980
Quincy 09:06:16 -26.2 Dark Down 22.6 240.2 Low 08:56:30 - 09:16:02 964
Portola 09:06:14 -26.2 Dark Down 22.3 240.6 Low 08:56:28 - 09:16:00 947
Reno 09:06:11 -26.3 Dark Down 22.0 241.2 Low 08:56:25 - 09:15:57 916
Carson City 09:06:10 -26.7 Dark Down 22.2 241.3 Low 08:56:24 - 09:15:56 884
Gardnerville 09:06:10 -26.9 Dark Down 22.3 241.5 Low 08:56:24 - 09:15:56 862
Yerington 09:06:08 -26.7 Dark Down 21.8 241.9 Low 08:56:22 - 09:15:54 859
Hawthorne 09:06:06 -27.0 Dark Down 21.7 242.5 Low 08:56:20 - 09:15:52 811
Niwot 09:05:40 -21.4 Dark Down 11.6 251.7 Really Low 08:55:54 - 09:15:26 783
Lee Vining 09:06:05 -27.7 Dark Down 22.3 242.3 Low 08:56:19 - 09:15:51 768
Tonopah 09:06:00 -27.1 Dark Down 20.9 243.7 Low 08:56:14 - 09:15:46 752
Bishop 09:06:02 -28.1 Dark Down 22.1 243.0 Low 08:56:16 - 09:15:48 705
Beatty 09:05:56 -28.1 Dark Down 21.1 244.4 Low 08:56:10 - 09:15:42 642
Lone Pine 09:05:59 -28.7 Dark Down 22.2 243.6 Low 08:56:13 - 09:15:45 632
Indian Springs 09:05:52 -28.1 Dark Down 20.5 245.3 Low 08:56:06 - 09:15:38 598
CPSLO 09:06:03 -30.6 Dark Down 24.6 242.1 Low 08:56:17 - 09:15:49 550
Henderson 09:05:49 -28.4 Dark Down 20.2 246.0 Low 08:56:03 - 09:15:35 540
Searchlight/Boulder City 09:05:48 -29.0 Dark Down 20.4 246.2 Low 08:56:02 - 09:15:34 487
Patrick 09:05:44 -28.7 Dark Down 19.7 246.9 Really Low 08:55:58 - 09:15:30 468
Laughlin/Bullhead City 09:05:46 -29.1 Dark Down 20.3 246.5 Low 08:56:00 - 09:15:32 455
Kingman/Dolan Springs 09:05:44 -28.9 Dark Down 19.9 246.9 Really Low 08:55:58 - 09:15:30 450
DCO 09:05:42 -28.7 Dark Down 19.2 247.5 Really Low 08:55:56 - 09:15:28 430
Mohave Valley 09:05:45 -29.4 Dark Down 20.4 246.6 Low 08:55:59 - 09:15:31 429
Wildwood 09:05:54 -31.3 Dark Down 23.7 244.1 Low 08:56:08 - 09:15:40 410
Lake Havasu City 09:05:43 -29.7 Dark Down 20.4 246.9 Low 08:55:57 - 09:15:29 389
Parker 09:05:42 -30.0 Dark Down 20.5 247.1 Low 08:55:56 - 09:15:28 356
Idyllwild 09:05:48 -31.1 Dark Down 22.5 245.6 Low 08:56:02 - 09:15:34 351
Blythe 09:05:42 -30.6 Dark Down 20.9 247.0 Low 08:55:56 - 09:15:28 311
Calipatria 09:05:43 -31.3 Dark Down 21.8 246.6 Low 08:55:57 - 09:15:29 277
Yuma 09:05:40 -31.4 Dark Down 21.3 247.3 Low 08:55:54 - 09:15:26 224

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 38628, (2019/07/08 09:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.37  69
13Zet Oph      16:37:09.6 -10:34:01  2.6  4.67  67
PPM 199844     16:38:01.6 -06:32:17  6.4  1.58  67
PPM 199789     16:34:28.3 -06:08:11  8.4  0.63  66
PPM 199743     16:31:59.4 -06:09:53  9.5  0.09  65
38628          16:31:56.9 -06:04:25 12.7        65
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:22:43 UT

Marc W. Buie, Southwest Research Institute

RECON