RECON: TNO occultation with 55636

Event between (55636) 02TX300 and star UC4-627-004203 with event index number of 166696

Geocentric closest approach at 2018/11/16 09:11:41 UTC

J2000 position of star is 01:20:19.9 +35:19:33
Equinox of date position of star is 01:21:19.0 +35:25:00
Stellar brightness R=16.1, 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 94 seconds.
The 1-sigma cross-track error in the shadow position is 2151 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 09:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.3 +16:32:45  0.8 47.27  97
57Gam1And      02:05:04.0 +42:25:10  2.3 10.99  75
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 16.1        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 26.5 km RECON observability=1.0 and success probability=10.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:08:46 -55.2 Dark Down 49.3 270.9 Up 09:00:28 - 09:17:05 4608
Tonasket 09:08:46 -55.4 Dark Down 49.3 271.2 Up 09:00:28 - 09:17:05 4582
Okanogan 09:08:46 -55.7 Dark Down 49.4 271.5 Up 09:00:28 - 09:17:05 4544
Brewster 09:08:47 -56.0 Dark Down 49.5 271.6 Up 09:00:29 - 09:17:06 4514
Manson/Chelan 09:08:48 -56.3 Dark Down 49.7 271.6 Up 09:00:29 - 09:17:06 4489
Entiat 09:08:48 -56.5 Dark Down 49.8 271.8 Up 09:00:29 - 09:17:06 4465
Wenatchee 09:08:48 -56.7 Dark Down 49.8 272.0 Up 09:00:30 - 09:17:07 4436
Ellensburg 09:08:48 -57.2 Dark Down 50.0 272.4 Up 09:00:30 - 09:17:07 4389
Yakima 09:08:48 -57.5 Dark Down 50.0 272.9 Up 09:00:30 - 09:17:07 4344
Toppenish/White Swan 09:08:48 -57.6 Dark Down 49.8 273.2 Up 09:00:30 - 09:17:07 4321
Pasco 09:08:45 -57.1 Dark Down 49.0 274.2 Up 09:00:26 - 09:17:03 4312
PNWRO 09:08:44 -57.2 Dark Down 48.8 274.6 Up 09:00:26 - 09:17:03 4285
George/Umatilla 09:08:45 -57.5 Dark Down 49.1 274.5 Up 09:00:27 - 09:17:04 4274
Goldendale 09:08:49 -58.2 Dark Down 50.1 273.6 Up 09:00:31 - 09:17:08 4258
The Dalles 09:08:50 -58.5 Dark Down 50.3 273.6 Up 09:00:32 - 09:17:09 4232
Maupin 09:08:50 -58.8 Dark Down 50.2 274.2 Up 09:00:31 - 09:17:08 4186
Madras/Culver 09:08:50 -59.3 Dark Down 50.2 274.8 Up 09:00:32 - 09:17:09 4125
Sisters 09:08:51 -59.7 Dark Down 50.5 275.0 Up 09:00:33 - 09:17:10 4087
Redmond 09:08:51 -59.6 Dark Down 50.2 275.2 Up 09:00:32 - 09:17:09 4085
Bend 09:08:51 -59.8 Dark Down 50.3 275.4 Up 09:00:32 - 09:17:09 4061
Oregon Observatory 09:08:51 -60.0 Dark Down 50.4 275.5 Up 09:00:33 - 09:17:10 4042
La Pine/Gilchrist 09:08:51 -60.2 Dark Down 50.4 275.7 Up 09:00:33 - 09:17:10 4019
North Lake 09:08:50 -60.2 Dark Down 49.9 276.6 Up 09:00:31 - 09:17:08 3972
Paisley 09:08:48 -60.5 Dark Down 49.6 277.5 Up 09:00:30 - 09:17:07 3912
Chiloquin 09:08:52 -61.2 Dark Down 50.5 276.9 Up 09:00:34 - 09:17:11 3895
Klamath Falls 09:08:52 -61.4 Dark Down 50.4 277.3 Up 09:00:34 - 09:17:11 3857
Lakeview 09:08:48 -60.7 Dark Down 49.4 278.2 Up 09:00:30 - 09:17:07 3857
Tulelake 09:08:51 -61.5 Dark Down 50.2 277.8 Up 09:00:33 - 09:17:10 3828
Niwot 09:08:10 -52.7 Dark Down 37.9 287.6 Up 08:59:51 - 09:16:28 3798
Cedarville 09:08:48 -61.1 Dark Down 49.2 279.0 Up 09:00:29 - 09:17:06 3784
Fall River/Burney 09:08:51 -62.1 Dark Down 50.0 278.9 Up 09:00:33 - 09:17:10 3728
Susanville 09:08:49 -62.2 Dark Down 49.3 280.0 Up 09:00:31 - 09:17:08 3660
Greenville 09:08:50 -62.5 Dark Down 49.5 280.2 Up 09:00:32 - 09:17:09 3629
Gimple 09:08:51 -62.5 Dark Down 49.4 280.3 Up 09:00:32 - 09:17:09 3629
Quincy 09:08:51 -62.7 Dark Down 49.5 280.4 Up 09:00:32 - 09:17:09 3607
Portola 09:08:49 -62.5 Dark Down 49.1 280.8 Up 09:00:31 - 09:17:08 3594
Reno 09:08:47 -62.3 Dark Down 48.5 281.4 Up 09:00:29 - 09:17:06 3567
Carson City 09:08:47 -62.5 Dark Down 48.5 281.8 Up 09:00:29 - 09:17:06 3528
Yerington 09:08:46 -62.3 Dark Down 47.9 282.3 Up 09:00:27 - 09:17:04 3509
Gardnerville 09:08:47 -62.7 Dark Down 48.4 282.1 Up 09:00:29 - 09:17:06 3501
Hawthorne 09:08:44 -62.3 Dark Down 47.4 283.0 Up 09:00:26 - 09:17:03 3461
Tonopah 09:08:41 -61.7 Dark Down 46.3 284.1 Up 09:00:22 - 09:16:59 3418
Lee Vining 09:08:46 -62.9 Dark Down 47.7 283.4 Up 09:00:27 - 09:17:04 3396
Bishop 09:08:44 -62.9 Dark Down 47.0 284.4 Up 09:00:26 - 09:17:03 3335
Beatty 09:08:40 -62.1 Dark Down 45.6 285.5 Up 09:00:21 - 09:16:58 3295
Indian Springs 09:08:37 -61.5 Dark Down 44.7 286.2 Up 09:00:18 - 09:16:55 3268
Lone Pine 09:08:43 -63.1 Dark Down 46.5 285.3 Up 09:00:25 - 09:17:02 3254
Henderson 09:08:35 -61.3 Dark Down 44.0 286.9 Up 09:00:16 - 09:16:53 3217
Patrick 09:08:32 -60.9 Dark Down 43.0 287.9 Up 09:00:13 - 09:16:50 3160
Searchlight/Boulder City 09:08:34 -61.6 Dark Down 43.8 287.5 Up 09:00:16 - 09:16:53 3155
DCO 09:08:30 -60.5 Dark Down 42.3 288.4 Up 09:00:11 - 09:16:48 3135
Kingman/Dolan Springs 09:08:33 -61.1 Dark Down 43.1 288.0 Up 09:00:14 - 09:16:51 3134
Laughlin/Bullhead City 09:08:34 -61.5 Dark Down 43.4 287.9 Up 09:00:15 - 09:16:52 3126
CPSLO 09:08:51 -65.5 Dark Down 48.2 285.7 Up 09:00:33 - 09:17:10 3101
Mohave Valley 09:08:34 -61.6 Dark Down 43.4 288.1 Up 09:00:15 - 09:16:52 3097
Lake Havasu City 09:08:33 -61.6 Dark Down 43.0 288.6 Up 09:00:15 - 09:16:52 3056
Parker 09:08:33 -61.7 Dark Down 42.9 288.9 Up 09:00:15 - 09:16:52 3019
Wildwood 09:08:46 -64.8 Dark Down 46.2 287.6 Up 09:00:27 - 09:17:04 2979
Blythe 09:08:35 -62.2 Dark Down 43.0 289.2 Up 09:00:16 - 09:16:53 2960
Idyllwild 09:08:41 -63.7 Dark Down 44.6 288.5 Up 09:00:22 - 09:16:59 2953
Calipatria 09:08:37 -63.1 Dark Down 43.5 289.4 Up 09:00:19 - 09:16:56 2898
Yuma 09:08:35 -62.6 Dark Down 42.7 290.0 Up 09:00:16 - 09:16:53 2860

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 09:12UT)
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  75
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 16.1        65
Positions are for J2000

Event circumstances last updated at 2017/05/19 18:05:49 UT

Marc W. Buie, Southwest Research Institute

RECON