RECON: TNO occultation with 55636

Event between (55636) 02TX300 and star GA1240:00248378 with event index number of 166696

Geocentric closest approach at 2018/11/16 09:09:16 UTC

J2000 position of star is 01:20:19.9 +35:19:33
Equinox of date position of star is 01:21:22.6 +35:25:20
Stellar brightness G=16.0, use SENSEUP=128
Star is 65 degrees from the moon. Moon is 57% illuminated.
TNO apparent brightness V=19.7

[RECON map]
TNO is 42.6 AU from the Sun and 41.8 AU from the Earth.
The TNO is moving 23.8 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 89 seconds.
The 1-sigma cross-track error in the shadow position is 2095 km.
The sky-plane scale is 30287.2 km/arcsec.

The TNO has an absolute magnitude Hv=3.4
Diameter=1259.0 km assuming a 5% albedo -- 53.0 sec chord
Diameter=514.0 km assuming a 30% albedo -- 21.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 55636, (2018/11/16 09:09UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.4 +16:32:45  0.8 47.27  97
57Gam1And      02:05:04.0 +42:25:10  2.3 10.99  76
PPM 066072     01:14:19.7 +34:11:53  6.5  1.90  63
PPM 066115     01:16:44.8 +34:49:31  8.5  1.12  63
PPM 066175     01:21:18.3 +35:13:14  9.0  0.20  64
55636          01:21:24.1 +35:25:28 16.0        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 27.3 km RECON observability=1.0 and success probability=1.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 09:06:24 -55.0 Dark Down 49.8 269.7 Up 08:58:30 - 09:14:18 7600
Oroville 09:06:23 -55.4 Dark Down 49.7 270.5 Up 08:58:29 - 09:14:17 7534
Tonasket 09:06:24 -55.6 Dark Down 49.7 270.7 Up 08:58:30 - 09:14:18 7508
Okanogan 09:06:24 -55.9 Dark Down 49.8 271.0 Up 08:58:30 - 09:14:18 7470
Brewster 09:06:24 -56.2 Dark Down 49.9 271.2 Up 08:58:30 - 09:14:18 7440
Manson/Chelan 09:06:26 -56.5 Dark Down 50.1 271.2 Up 08:58:32 - 09:14:20 7416
Entiat 09:06:25 -56.7 Dark Down 50.2 271.4 Up 08:58:31 - 09:14:19 7391
Wenatchee 09:06:26 -57.0 Dark Down 50.2 271.6 Up 08:58:32 - 09:14:20 7363
Ellensburg 09:06:26 -57.4 Dark Down 50.4 272.0 Up 08:58:32 - 09:14:20 7316
Yakima 09:06:26 -57.7 Dark Down 50.4 272.4 Up 08:58:32 - 09:14:20 7271
Toppenish/White Swan 09:06:26 -57.8 Dark Down 50.2 272.8 Up 08:58:32 - 09:14:20 7247
Pasco 09:06:23 -57.4 Dark Down 49.4 273.8 Up 08:58:29 - 09:14:17 7237
PNWRO 09:06:22 -57.5 Dark Down 49.2 274.3 Up 08:58:28 - 09:14:16 7210
George/Umatilla 09:06:24 -57.7 Dark Down 49.5 274.1 Up 08:58:30 - 09:14:18 7199
Goldendale 09:06:27 -58.5 Dark Down 50.5 273.2 Up 08:58:33 - 09:14:21 7185
The Dalles 09:06:28 -58.8 Dark Down 50.7 273.2 Up 08:58:34 - 09:14:22 7160
Maupin 09:06:28 -59.1 Dark Down 50.6 273.8 Up 08:58:34 - 09:14:22 7113
Madras/Culver 09:06:28 -59.5 Dark Down 50.6 274.5 Up 08:58:34 - 09:14:22 7052
Sisters 09:06:29 -60.0 Dark Down 50.9 274.6 Up 08:58:35 - 09:14:23 7015
Redmond 09:06:28 -59.8 Dark Down 50.6 274.9 Up 08:58:34 - 09:14:22 7013
Bend 09:06:28 -60.1 Dark Down 50.7 275.0 Up 08:58:34 - 09:14:22 6989
Oregon Observatory 09:06:29 -60.3 Dark Down 50.8 275.2 Up 08:58:35 - 09:14:23 6969
La Pine/Gilchrist 09:06:29 -60.4 Dark Down 50.8 275.4 Up 08:58:35 - 09:14:23 6947
North Lake 09:06:27 -60.5 Dark Down 50.4 276.3 Up 08:58:33 - 09:14:21 6899
Paisley 09:06:27 -60.7 Dark Down 50.0 277.1 Up 08:58:33 - 09:14:21 6839
Chiloquin 09:06:30 -61.5 Dark Down 51.0 276.5 Up 08:58:36 - 09:14:24 6823
Klamath Falls 09:06:30 -61.7 Dark Down 50.9 277.0 Up 08:58:36 - 09:14:24 6785
Lakeview 09:06:26 -61.0 Dark Down 49.8 277.8 Up 08:58:32 - 09:14:20 6783
Tulelake 09:06:29 -61.8 Dark Down 50.6 277.5 Up 08:58:35 - 09:14:23 6756
Cedarville 09:06:26 -61.4 Dark Down 49.6 278.7 Up 08:58:32 - 09:14:20 6711
Niwot 09:05:48 -53.1 Dark Down 38.3 287.3 Up 08:57:54 - 09:13:42 6710
Fall River/Burney 09:06:29 -62.4 Dark Down 50.4 278.6 Up 08:58:35 - 09:14:23 6655
Susanville 09:06:27 -62.5 Dark Down 49.8 279.7 Up 08:58:33 - 09:14:21 6587
Greenville 09:06:28 -62.8 Dark Down 49.9 279.9 Up 08:58:34 - 09:14:22 6556
Gimple 09:06:28 -62.8 Dark Down 49.9 280.0 Up 08:58:34 - 09:14:22 6556
Quincy 09:06:28 -63.0 Dark Down 49.9 280.2 Up 08:58:34 - 09:14:22 6534
Portola 09:06:27 -62.8 Dark Down 49.5 280.5 Up 08:58:33 - 09:14:21 6521
Reno 09:06:25 -62.6 Dark Down 49.0 281.1 Up 08:58:31 - 09:14:19 6493
Carson City 09:06:25 -62.9 Dark Down 48.9 281.6 Up 08:58:31 - 09:14:19 6454
Yerington 09:06:23 -62.7 Dark Down 48.4 282.1 Up 08:58:29 - 09:14:17 6434
Gardnerville 09:06:25 -63.0 Dark Down 48.8 281.9 Up 08:58:31 - 09:14:19 6427
Hawthorne 09:06:22 -62.6 Dark Down 47.9 282.8 Up 08:58:28 - 09:14:16 6386
Tonopah 09:06:19 -62.1 Dark Down 46.7 283.9 Up 08:58:25 - 09:14:13 6341
Lee Vining 09:06:23 -63.3 Dark Down 48.1 283.2 Up 08:58:29 - 09:14:17 6322
Bishop 09:06:22 -63.2 Dark Down 47.4 284.1 Up 08:58:28 - 09:14:16 6259
Beatty 09:06:18 -62.5 Dark Down 46.1 285.2 Up 08:58:24 - 09:14:12 6218
Indian Springs 09:06:15 -61.9 Dark Down 45.2 286.0 Up 08:58:21 - 09:14:09 6190
Lone Pine 09:06:21 -63.5 Dark Down 47.0 285.1 Up 08:58:27 - 09:14:15 6178
Henderson 09:06:12 -61.8 Dark Down 44.5 286.7 Up 08:58:18 - 09:14:06 6137
Patrick 09:06:09 -61.3 Dark Down 43.4 287.7 Up 08:58:15 - 09:14:03 6080
Searchlight/Boulder City 09:06:13 -62.0 Dark Down 44.3 287.3 Up 08:58:19 - 09:14:07 6076
DCO 09:06:08 -60.9 Dark Down 42.8 288.2 Up 08:58:14 - 09:14:02 6054
Kingman/Dolan Springs 09:06:11 -61.5 Dark Down 43.5 287.8 Up 08:58:17 - 09:14:05 6054
Laughlin/Bullhead City 09:06:12 -61.9 Dark Down 43.9 287.7 Up 08:58:18 - 09:14:06 6047
CPSLO 09:06:30 -65.9 Dark Down 48.7 285.5 Up 08:58:36 - 09:14:24 6028
Mohave Valley 09:06:12 -62.0 Dark Down 43.8 287.9 Up 08:58:18 - 09:14:06 6017
Lake Havasu City 09:06:11 -62.0 Dark Down 43.5 288.4 Up 08:58:17 - 09:14:05 5977
Parker 09:06:12 -62.2 Dark Down 43.4 288.7 Up 08:58:18 - 09:14:06 5939
Wildwood 09:06:24 -65.3 Dark Down 46.7 287.4 Up 08:58:30 - 09:14:18 5904
Blythe 09:06:13 -62.6 Dark Down 43.4 289.1 Up 08:58:19 - 09:14:07 5880
Idyllwild 09:06:19 -64.1 Dark Down 45.1 288.3 Up 08:58:25 - 09:14:13 5876
Calipatria 09:06:15 -63.5 Dark Down 44.0 289.3 Up 08:58:21 - 09:14:09 5819
Yuma 09:06:13 -63.1 Dark Down 43.1 289.9 Up 08:58:19 - 09:14:07 5780

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 55636, (2018/11/16 09:09UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 47.27  97
57Gam1And      02:03:54.0 +42:19:46  2.3 10.99  76
PPM 066072     01:13:16.2 +34:05:54  6.5  1.90  63
PPM 066115     01:15:41.1 +34:43:33  8.5  1.12  63
PPM 066175     01:20:14.1 +35:07:19  9.0  0.20  64
55636          01:20:19.9 +35:19:33 16.0        65
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:34:19 UT

Marc W. Buie, Southwest Research Institute

RECON