RECON: TNO occultation with 04TX357

Event between 04TX357 and star GA1240:01740493 with event index number of 174644

Geocentric closest approach at 2019/01/11 07:39:46 UTC

J2000 position of star is 05:17:29.7 +35:16:21
Equinox of date position of star is 05:18:45.5 +35:17:30
Stellar brightness G=15.4, use SENSEUP=128
Star is 94 degrees from the moon. Moon is 23% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 29.0 AU from the Sun and 28.1 AU from the Earth.
The TNO is moving 20.6 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 519 seconds.
The 1-sigma cross-track error in the shadow position is 3514 km.
The sky-plane scale is 20387.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.7
Diameter=111.2 km assuming a 5% albedo -- 5.4 sec chord
Diameter=45.4 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 04TX357, (2019/01/11 07:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.9 +16:32:46  0.8 20.93  82
3Iot Aur       04:58:14.1 +33:11:40  2.7  4.73  90
19 Aur         05:21:16.3 +33:58:34  5.0  1.41  95
PPM 070194     05:20:31.5 +34:54:33  7.3  0.53  95
PPM 070131     05:18:22.4 +35:20:27  9.2  0.09  94
PPM 070138     05:18:39.3 +35:13:23 10.5  0.07  94
04TX357        05:18:45.9 +35:17:30 15.4        94
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 1.7 sigma about the mid-time.
The median site spacing is 24.5 km RECON observability=1.0 and success probability=14.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:38:05 -61.4 Dark Down 66.0 242.5 Up 07:23:05 - 07:53:05 -346
Summerland 07:38:06 -61.4 Dark Down 66.2 242.1 Up 07:23:06 - 07:53:06 -353
Penticton 07:38:05 -61.8 Dark Down 66.2 243.0 Up 07:23:05 - 07:53:05 -386
Okanagan Falls 07:38:05 -61.9 Dark Down 66.3 243.4 Up 07:23:05 - 07:53:05 -407
Oliver 07:38:05 -62.1 Dark Down 66.4 243.7 Up 07:23:05 - 07:53:05 -424
Anarchist Mountain Observatory 07:38:04 -62.3 Dark Down 66.3 244.4 Up 07:23:04 - 07:53:04 -441
Oroville 07:38:04 -62.4 Dark Down 66.4 244.4 Up 07:23:04 - 07:53:04 -450
Tonasket 07:38:04 -62.6 Dark Down 66.5 244.9 Up 07:23:04 - 07:53:04 -475
Okanogan 07:38:04 -62.9 Dark Down 66.7 245.4 Up 07:23:04 - 07:53:04 -513
Brewster 07:38:05 -63.1 Dark Down 67.0 245.7 Up 07:23:05 - 07:53:05 -543
Manson/Chelan 07:38:06 -63.2 Dark Down 67.3 245.6 Up 07:23:06 - 07:53:06 -569
Entiat 07:38:06 -63.4 Dark Down 67.4 246.0 Up 07:23:06 - 07:53:06 -593
Wenatchee 07:38:06 -63.7 Dark Down 67.6 246.5 Up 07:23:06 - 07:53:06 -621
Ellensburg 07:38:07 -64.0 Dark Down 67.9 247.1 Up 07:23:07 - 07:53:07 -668
Yakima 07:38:06 -64.4 Dark Down 68.0 248.0 Up 07:23:06 - 07:53:06 -712
Toppenish/White Swan 07:38:05 -64.7 Dark Down 68.0 248.7 Up 07:23:05 - 07:53:05 -734
Pasco 07:38:01 -65.0 Dark Down 67.3 250.6 Up 07:23:01 - 07:53:01 -738
PNWRO 07:38:00 -65.3 Dark Down 67.2 251.5 Up 07:23:00 - 07:53:00 -763
George/Umatilla 07:38:01 -65.3 Dark Down 67.5 251.1 Up 07:23:01 - 07:53:01 -776
Goldendale 07:38:07 -65.1 Dark Down 68.5 249.4 Up 07:23:07 - 07:53:07 -798
The Dalles 07:38:08 -65.2 Dark Down 68.8 249.5 Up 07:23:08 - 07:53:08 -824
Maupin 07:38:07 -65.6 Dark Down 68.9 250.6 Up 07:23:07 - 07:53:07 -870
Madras/Culver 07:38:07 -66.1 Dark Down 69.1 251.9 Up 07:23:07 - 07:53:07 -930
Sisters 07:38:08 -66.3 Dark Down 69.5 252.2 Up 07:23:08 - 07:53:08 -969
Redmond 07:38:07 -66.5 Dark Down 69.2 252.8 Up 07:23:07 - 07:53:07 -969
Bend 07:38:07 -66.6 Dark Down 69.4 253.1 Up 07:23:07 - 07:53:07 -994
Oregon Observatory 07:38:07 -66.8 Dark Down 69.5 253.4 Up 07:23:07 - 07:53:07 -1014
La Pine/Gilchrist 07:38:07 -66.9 Dark Down 69.6 253.9 Up 07:23:07 - 07:53:07 -1036
North Lake 07:38:05 -67.5 Dark Down 69.3 255.7 Up 07:23:05 - 07:53:05 -1080
Paisley 07:38:03 -68.1 Dark Down 69.2 257.5 Up 07:23:03 - 07:53:03 -1138
Chiloquin 07:38:08 -67.9 Dark Down 70.2 256.4 Up 07:23:08 - 07:53:08 -1161
Lakeview 07:38:02 -68.6 Dark Down 69.2 259.0 Up 07:23:02 - 07:53:02 -1193
Klamath Falls 07:38:07 -68.2 Dark Down 70.2 257.4 Up 07:23:07 - 07:53:07 -1198
Niwot 07:37:06 -70.7 Dark Down 58.0 274.4 Up 07:22:06 - 07:52:06 -1210
Tulelake 07:38:06 -68.5 Dark Down 70.0 258.5 Up 07:23:06 - 07:53:06 -1226
Cedarville 07:38:01 -69.3 Dark Down 69.2 260.9 Up 07:23:01 - 07:53:01 -1264
Fall River/Burney 07:38:06 -69.4 Dark Down 70.1 261.0 Up 07:23:06 - 07:53:06 -1326
Susanville 07:38:02 -70.2 Dark Down 69.7 263.4 Up 07:23:02 - 07:53:02 -1390
Gimple 07:38:03 -70.4 Dark Down 69.9 264.0 Up 07:23:03 - 07:53:03 -1422
Greenville 07:38:03 -70.4 Dark Down 69.9 263.9 Up 07:23:03 - 07:53:03 -1423
Quincy 07:38:03 -70.5 Dark Down 69.9 264.4 Up 07:23:03 - 07:53:03 -1445
Portola 07:38:01 -70.8 Dark Down 69.6 265.2 Up 07:23:01 - 07:53:01 -1455
Reno 07:37:59 -71.2 Dark Down 69.1 266.4 Up 07:22:59 - 07:52:59 -1480
Carson City 07:37:59 -71.6 Dark Down 69.1 267.3 Up 07:22:59 - 07:52:59 -1519
Yerington 07:37:56 -71.9 Dark Down 68.6 268.3 Up 07:22:56 - 07:52:56 -1535
Gardnerville 07:37:58 -71.8 Dark Down 69.1 268.0 Up 07:22:58 - 07:52:58 -1546
Hawthorne 07:37:53 -72.5 Dark Down 68.2 269.8 Up 07:22:53 - 07:52:53 -1582
Tonopah 07:37:48 -73.3 Dark Down 67.1 271.8 Up 07:22:48 - 07:52:48 -1619
Lee Vining 07:37:55 -72.9 Dark Down 68.6 270.9 Up 07:22:55 - 07:52:55 -1648
Bishop 07:37:52 -73.7 Dark Down 68.0 272.8 Up 07:22:52 - 07:52:52 -1707
Beatty 07:37:45 -74.5 Dark Down 66.7 274.7 Up 07:22:45 - 07:52:45 -1742
Indian Springs 07:37:41 -75.0 Dark Down 65.8 275.9 Up 07:22:41 - 07:52:41 -1765
Lone Pine 07:37:50 -74.5 Dark Down 67.7 274.8 Up 07:22:50 - 07:52:50 -1788
Henderson 07:37:38 -75.6 Dark Down 65.2 277.3 Up 07:22:38 - 07:52:38 -1815
Patrick 07:37:33 -76.4 Dark Down 64.3 279.0 Up 07:22:33 - 07:52:33 -1869
Searchlight/Boulder City 07:37:37 -76.2 Dark Down 65.1 278.6 Up 07:22:37 - 07:52:37 -1877
DCO 07:37:30 -76.7 Dark Down 63.7 279.8 Up 07:22:30 - 07:52:30 -1892
Kingman/Dolan Springs 07:37:34 -76.6 Dark Down 64.4 279.4 Up 07:22:34 - 07:52:34 -1896
Laughlin/Bullhead City 07:37:36 -76.5 Dark Down 64.8 279.3 Up 07:22:36 - 07:52:36 -1905
Mohave Valley 07:37:36 -76.8 Dark Down 64.7 279.9 Up 07:22:36 - 07:52:36 -1935
CPSLO 07:38:00 -74.8 Dark Down 69.7 277.2 Up 07:23:00 - 07:53:00 -1955
Lake Havasu City 07:37:34 -77.2 Dark Down 64.5 280.8 Up 07:22:34 - 07:52:34 -1976
Parker 07:37:34 -77.6 Dark Down 64.4 281.5 Up 07:22:34 - 07:52:34 -2014
Wildwood 07:37:51 -76.6 Dark Down 67.8 280.8 Up 07:22:51 - 07:52:51 -2070
Blythe 07:37:35 -78.1 Dark Down 64.5 282.5 Up 07:22:35 - 07:52:35 -2076
Idyllwild 07:37:44 -77.5 Dark Down 66.2 281.9 Up 07:22:44 - 07:52:44 -2090
Calipatria 07:37:38 -78.4 Dark Down 65.2 283.4 Up 07:22:38 - 07:52:38 -2142
Yuma 07:37:34 -79.0 Dark Down 64.3 284.4 Up 07:22:34 - 07:52:34 -2178

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, (2019/01/11 07:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.93  82
3Iot Aur       04:56:59.6 +33:09:58  2.7  4.73  90
19 Aur         05:20:00.9 +33:57:29  5.0  1.41  95
PPM 070194     05:19:15.5 +34:53:27  7.3  0.53  95
PPM 070131     05:17:06.1 +35:19:17  9.2  0.09  94
PPM 070138     05:17:23.1 +35:12:14 10.5  0.07  94
04TX357        05:17:29.7 +35:16:21 15.4        94
Positions are for J2000

Event circumstances last updated at 2018/12/04 05:08:18 UT

Marc W. Buie, Southwest Research Institute

RECON