RECON: TNO occultation with 04TX357

Event between 04TX357 and star GA1240:02028745 with event index number of 229382

Geocentric closest approach at 2019/12/09 11:42:41 UTC

J2000 position of star is 05:34:24.9 +35:59:09
Equinox of date position of star is 05:35:40.9 +35:59:50
Stellar brightness G=13.7, use SENSEUP=64
Star is 43 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 29.0 AU from the Sun and 28.0 AU from the Earth.
The TNO is moving 24.1 km/sec on the sky relative to the star, or, 4.3 arcsec/hr.
The 1-sigma error in the time of the event is 468 seconds.
The 1-sigma cross-track error in the shadow position is 3017 km.
The sky-plane scale is 20338.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.7
Diameter=111.2 km assuming a 5% albedo -- 4.6 sec chord
Diameter=45.4 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 04TX357, (2019/12/09 11:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.0 +16:32:52  0.8 23.42  25
Alnath         05:27:33.2 +28:37:21  1.6  7.58  39
PPM 070537     05:34:57.8 +34:44:16  6.1  1.27  43
PPM 070538     05:35:02.0 +36:28:19  8.5  0.50  43
PPM 070547     05:35:42.1 +35:49:32  9.9  0.17  43
04TX357        05:35:45.4 +35:59:52 13.7        44
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 1.9 sigma about the mid-time.
The median site spacing is 16.5 km RECON observability=1.0 and success probability=12.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 11:40:35 -37.9 Dark Up 51.6 268.3 Up 11:25:35 - 11:55:35 1966
Summerland 11:40:36 -38.1 Dark Up 51.9 268.1 Up 11:25:36 - 11:55:36 1950
Penticton 11:40:34 -38.0 Dark Up 51.7 268.6 Up 11:25:34 - 11:55:34 1928
Okanagan Falls 11:40:34 -38.1 Dark Up 51.8 268.8 Up 11:25:34 - 11:55:34 1911
Oliver 11:40:33 -38.1 Dark Up 51.8 269.0 Up 11:25:33 - 11:55:33 1897
Anarchist Mountain Observatory 11:40:32 -38.0 Dark Up 51.6 269.4 Up 11:25:32 - 11:55:32 1888
Oroville 11:40:32 -38.0 Dark Up 51.7 269.4 Up 11:25:32 - 11:55:32 1879
Tonasket 11:40:32 -38.1 Dark Up 51.7 269.7 Up 11:25:32 - 11:55:32 1859
Okanogan 11:40:31 -38.2 Dark Up 51.8 270.1 Up 11:25:31 - 11:55:31 1823
Brewster 11:40:31 -38.4 Dark Up 51.9 270.3 Up 11:25:31 - 11:55:31 1792
Manson/Chelan 11:40:31 -38.7 Dark Up 52.2 270.2 Up 11:25:31 - 11:55:31 1760
Entiat 11:40:30 -38.8 Dark Up 52.2 270.5 Up 11:25:30 - 11:55:30 1738
Wenatchee 11:40:30 -38.9 Dark Up 52.3 270.7 Up 11:25:30 - 11:55:30 1712
Niwot 11:39:43 -28.1 Dark Down 40.5 286.9 Up 11:24:43 - 11:54:43 1687
Ellensburg 11:40:29 -39.1 Dark Up 52.4 271.1 Up 11:25:29 - 11:55:29 1666
Pasco 11:40:24 -38.2 Dark Up 51.4 273.0 Up 11:25:24 - 11:55:24 1650
PNWRO 11:40:23 -38.1 Dark Up 51.3 273.5 Up 11:25:23 - 11:55:23 1636
Yakima 11:40:28 -39.1 Dark Up 52.4 271.6 Up 11:25:28 - 11:55:28 1629
Toppenish/White Swan 11:40:27 -39.0 Dark Up 52.3 272.0 Up 11:25:27 - 11:55:27 1615
George/Umatilla 11:40:24 -38.4 Dark Up 51.6 273.3 Up 11:25:24 - 11:55:24 1611
Goldendale 11:40:27 -39.4 Dark Up 52.6 272.4 Up 11:25:27 - 11:55:27 1549
The Dalles 11:40:27 -39.7 Dark Up 52.8 272.5 Up 11:25:27 - 11:55:27 1515
Maupin 11:40:25 -39.7 Dark Up 52.7 273.1 Up 11:25:25 - 11:55:25 1481
Madras/Culver 11:40:25 -39.8 Dark Up 52.7 273.8 Up 11:25:25 - 11:55:25 1428
Redmond 11:40:24 -39.9 Dark Up 52.7 274.2 Up 11:25:24 - 11:55:24 1393
Sisters 11:40:25 -40.1 Dark Up 53.0 273.9 Up 11:25:25 - 11:55:25 1381
Bend 11:40:23 -40.0 Dark Up 52.8 274.4 Up 11:25:23 - 11:55:23 1368
Oregon Observatory 11:40:23 -40.1 Dark Up 52.9 274.6 Up 11:25:23 - 11:55:23 1347
La Pine/Gilchrist 11:40:23 -40.2 Dark Up 52.9 274.8 Up 11:25:23 - 11:55:23 1326
North Lake 11:40:21 -39.8 Dark Up 52.5 275.7 Up 11:25:21 - 11:55:21 1308
Paisley 11:40:18 -39.6 Dark Up 52.2 276.6 Up 11:25:18 - 11:55:18 1270
Lakeview 11:40:17 -39.5 Dark Up 52.0 277.4 Up 11:25:17 - 11:55:17 1230
Chiloquin 11:40:21 -40.5 Dark Up 53.1 276.1 Up 11:25:21 - 11:55:21 1208
Klamath Falls 11:40:20 -40.5 Dark Up 53.0 276.5 Up 11:25:20 - 11:55:20 1179
Cedarville 11:40:14 -39.4 Dark Up 51.7 278.3 Up 11:25:14 - 11:55:14 1175
Tulelake 11:40:18 -40.3 Dark Up 52.8 277.1 Up 11:25:18 - 11:55:18 1165
Fall River/Burney 11:40:16 -40.3 Dark Up 52.6 278.3 Up 11:25:16 - 11:55:16 1082
Susanville 11:40:13 -39.8 Dark Up 51.9 279.5 Up 11:25:13 - 11:55:13 1051
Gimple 11:40:13 -40.0 Dark Up 52.1 279.7 Up 11:25:13 - 11:55:13 1016
Greenville 11:40:13 -40.0 Dark Up 52.1 279.7 Up 11:25:13 - 11:55:13 1013
Reno 11:40:09 -39.2 Dark Up 51.2 280.9 Up 11:25:09 - 11:55:09 1002
Portola 11:40:11 -39.7 Dark Up 51.7 280.3 Up 11:25:11 - 11:55:11 1001
Quincy 11:40:13 -40.0 Dark Up 52.1 279.9 Up 11:25:13 - 11:55:13 994
Yerington 11:40:06 -38.7 Dark Up 50.6 281.9 Up 11:25:06 - 11:55:06 976
Tonopah 11:40:00 -37.2 Dark Up 48.9 283.8 Up 11:25:00 - 11:55:00 969
Carson City 11:40:08 -39.2 Dark Up 51.1 281.4 Up 11:25:08 - 11:55:08 969
Hawthorne 11:40:04 -38.3 Dark Up 50.1 282.6 Up 11:25:04 - 11:55:04 954
Gardnerville 11:40:07 -39.2 Dark Up 51.0 281.7 Up 11:25:07 - 11:55:07 947
Indian Springs 11:39:53 -35.9 Dark Up 47.4 285.9 Up 11:24:53 - 11:54:53 896
Lee Vining 11:40:04 -38.7 Dark Up 50.3 283.1 Up 11:25:04 - 11:55:04 880
Beatty 11:39:56 -36.8 Dark Up 48.3 285.2 Up 11:24:56 - 11:54:56 880
Henderson 11:39:50 -35.4 Dark Up 46.7 286.7 Up 11:24:50 - 11:54:50 877
DCO 11:39:45 -33.8 Dark Up 45.0 288.2 Up 11:24:45 - 11:54:45 872
Patrick 11:39:47 -34.4 Dark Up 45.6 287.7 Up 11:24:47 - 11:54:47 869
Bishop 11:40:01 -38.1 Dark Up 49.6 284.1 Up 11:25:01 - 11:55:01 854
Kingman/Dolan Springs 11:39:46 -34.6 Dark Up 45.7 287.9 Up 11:24:46 - 11:54:46 839
Searchlight/Boulder City 11:39:49 -35.3 Dark Up 46.5 287.3 Up 11:24:49 - 11:54:49 826
Laughlin/Bullhead City 11:39:48 -35.0 Dark Up 46.1 287.7 Up 11:24:48 - 11:54:48 814
Lone Pine 11:39:59 -37.8 Dark Up 49.2 285.1 Up 11:24:59 - 11:54:59 796
Mohave Valley 11:39:47 -34.9 Dark Up 46.0 288.0 Up 11:24:47 - 11:54:47 788
Lake Havasu City 11:39:45 -34.7 Dark Up 45.7 288.5 Up 11:24:45 - 11:54:45 762
Parker 11:39:45 -34.7 Dark Up 45.6 288.8 Up 11:24:45 - 11:54:45 730
Blythe 11:39:44 -34.8 Dark Up 45.6 289.2 Up 11:24:44 - 11:54:44 667
Idyllwild 11:39:49 -36.6 Dark Up 47.3 288.5 Up 11:24:49 - 11:54:49 582
Yuma 11:39:42 -34.8 Dark Up 45.4 290.1 Up 11:24:42 - 11:54:42 578
Calipatria 11:39:45 -35.6 Dark Up 46.2 289.5 Up 11:24:45 - 11:54:45 578
CPSLO 11:40:02 -39.9 Dark Up 50.9 285.7 Up 11:25:02 - 11:55:02 561
Wildwood 11:39:54 -38.2 Dark Up 48.9 287.7 Up 11:24:54 - 11:54:54 533

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 04TX357, (2019/12/09 11:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 23.42  25
Alnath         05:26:17.5 +28:36:23  1.6  7.58  39
PPM 070537     05:33:38.1 +34:43:32  6.1  1.27  43
PPM 070538     05:33:41.1 +36:27:35  8.5  0.50  43
PPM 070547     05:34:21.7 +35:48:49  9.9  0.17  43
04TX357        05:34:24.9 +35:59:09 13.7        43
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:38:05 UT

Marc W. Buie, Southwest Research Institute

RECON