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 09:11:50 UTC

J2000 position of star is 01:20:19.9 +35:19:33
Equinox of date position of star is 01:21:21.0 +35:25:11
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 84 seconds.
The 1-sigma cross-track error in the shadow position is 1929 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      04:37:00.4 +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 26.6 km RECON observability=1.0 and success probability=12.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:08:56 -55.2 Dark Down 49.3 270.9 Up 09:01:28 - 09:16:24 4126
Tonasket 09:08:56 -55.3 Dark Down 49.3 271.2 Up 09:01:28 - 09:16:24 4100
Okanogan 09:08:56 -55.7 Dark Down 49.3 271.5 Up 09:01:28 - 09:16:24 4063
Brewster 09:08:56 -56.0 Dark Down 49.5 271.7 Up 09:01:28 - 09:16:24 4032
Manson/Chelan 09:08:58 -56.3 Dark Down 49.7 271.6 Up 09:01:30 - 09:16:26 4007
Entiat 09:08:58 -56.5 Dark Down 49.8 271.8 Up 09:01:30 - 09:16:26 3983
Wenatchee 09:08:58 -56.7 Dark Down 49.8 272.1 Up 09:01:30 - 09:16:26 3954
Ellensburg 09:08:58 -57.1 Dark Down 49.9 272.4 Up 09:01:30 - 09:16:26 3908
Yakima 09:08:58 -57.5 Dark Down 49.9 272.9 Up 09:01:30 - 09:16:26 3863
Toppenish/White Swan 09:08:58 -57.6 Dark Down 49.8 273.3 Up 09:01:30 - 09:16:26 3839
Pasco 09:08:55 -57.1 Dark Down 48.9 274.2 Up 09:01:27 - 09:16:23 3830
PNWRO 09:08:54 -57.2 Dark Down 48.8 274.7 Up 09:01:26 - 09:16:22 3803
George/Umatilla 09:08:55 -57.5 Dark Down 49.1 274.5 Up 09:01:27 - 09:16:23 3792
Goldendale 09:08:59 -58.2 Dark Down 50.1 273.6 Up 09:01:31 - 09:16:27 3777
The Dalles 09:09:00 -58.5 Dark Down 50.3 273.7 Up 09:01:32 - 09:16:28 3751
Maupin 09:08:59 -58.8 Dark Down 50.2 274.2 Up 09:01:31 - 09:16:27 3705
Madras/Culver 09:08:59 -59.2 Dark Down 50.2 274.9 Up 09:01:31 - 09:16:27 3644
Sisters 09:09:01 -59.7 Dark Down 50.5 275.0 Up 09:01:33 - 09:16:29 3606
Redmond 09:09:00 -59.5 Dark Down 50.2 275.3 Up 09:01:32 - 09:16:28 3604
Bend 09:09:00 -59.8 Dark Down 50.3 275.4 Up 09:01:32 - 09:16:28 3580
Oregon Observatory 09:09:01 -60.0 Dark Down 50.3 275.6 Up 09:01:33 - 09:16:29 3560
La Pine/Gilchrist 09:09:01 -60.2 Dark Down 50.4 275.8 Up 09:01:33 - 09:16:29 3538
North Lake 09:08:59 -60.2 Dark Down 49.9 276.6 Up 09:01:31 - 09:16:27 3491
Paisley 09:08:59 -60.4 Dark Down 49.6 277.5 Up 09:01:31 - 09:16:27 3430
Chiloquin 09:09:02 -61.2 Dark Down 50.5 276.9 Up 09:01:34 - 09:16:30 3414
Klamath Falls 09:09:02 -61.4 Dark Down 50.4 277.4 Up 09:01:34 - 09:16:30 3376
Lakeview 09:08:58 -60.7 Dark Down 49.4 278.2 Up 09:01:30 - 09:16:26 3375
Tulelake 09:09:01 -61.4 Dark Down 50.1 277.8 Up 09:01:33 - 09:16:29 3347
Niwot 09:08:20 -52.7 Dark Down 37.9 287.6 Up 09:00:52 - 09:15:48 3313
Cedarville 09:08:57 -61.1 Dark Down 49.1 279.0 Up 09:01:29 - 09:16:25 3303
Fall River/Burney 09:09:01 -62.1 Dark Down 50.0 279.0 Up 09:01:33 - 09:16:29 3246
Susanville 09:08:59 -62.1 Dark Down 49.3 280.1 Up 09:01:31 - 09:16:27 3179
Greenville 09:09:00 -62.5 Dark Down 49.5 280.2 Up 09:01:32 - 09:16:28 3148
Gimple 09:09:00 -62.5 Dark Down 49.4 280.3 Up 09:01:32 - 09:16:28 3148
Quincy 09:09:00 -62.6 Dark Down 49.4 280.5 Up 09:01:32 - 09:16:28 3125
Portola 09:08:59 -62.5 Dark Down 49.1 280.8 Up 09:01:31 - 09:16:27 3113
Reno 09:08:57 -62.3 Dark Down 48.5 281.4 Up 09:01:29 - 09:16:25 3085
Carson City 09:08:57 -62.5 Dark Down 48.4 281.8 Up 09:01:29 - 09:16:25 3046
Yerington 09:08:55 -62.3 Dark Down 47.9 282.3 Up 09:01:27 - 09:16:23 3027
Gardnerville 09:08:57 -62.7 Dark Down 48.3 282.1 Up 09:01:29 - 09:16:25 3019
Hawthorne 09:08:54 -62.3 Dark Down 47.4 283.1 Up 09:01:26 - 09:16:22 2979
Tonopah 09:08:50 -61.7 Dark Down 46.2 284.1 Up 09:01:22 - 09:16:18 2936
Lee Vining 09:08:55 -62.9 Dark Down 47.6 283.5 Up 09:01:27 - 09:16:23 2915
Bishop 09:08:54 -62.8 Dark Down 47.0 284.4 Up 09:01:26 - 09:16:22 2853
Beatty 09:08:49 -62.1 Dark Down 45.6 285.5 Up 09:01:21 - 09:16:17 2812
Indian Springs 09:08:46 -61.5 Dark Down 44.7 286.2 Up 09:01:18 - 09:16:14 2785
Lone Pine 09:08:53 -63.1 Dark Down 46.5 285.3 Up 09:01:25 - 09:16:21 2772
Henderson 09:08:44 -61.3 Dark Down 44.0 287.0 Up 09:01:16 - 09:16:12 2733
Patrick 09:08:42 -60.8 Dark Down 42.9 287.9 Up 09:01:14 - 09:16:10 2676
Searchlight/Boulder City 09:08:44 -61.6 Dark Down 43.8 287.5 Up 09:01:16 - 09:16:12 2672
DCO 09:08:40 -60.5 Dark Down 42.3 288.4 Up 09:01:12 - 09:16:08 2651
Kingman/Dolan Springs 09:08:42 -61.1 Dark Down 43.0 288.0 Up 09:01:14 - 09:16:10 2651
Laughlin/Bullhead City 09:08:44 -61.4 Dark Down 43.4 287.9 Up 09:01:16 - 09:16:12 2643
CPSLO 09:09:01 -65.5 Dark Down 48.2 285.7 Up 09:01:33 - 09:16:29 2620
Mohave Valley 09:08:44 -61.6 Dark Down 43.3 288.1 Up 09:01:16 - 09:16:12 2614
Lake Havasu City 09:08:44 -61.6 Dark Down 43.0 288.6 Up 09:01:16 - 09:16:12 2573
Parker 09:08:43 -61.7 Dark Down 42.9 288.9 Up 09:01:15 - 09:16:11 2535
Wildwood 09:08:56 -64.8 Dark Down 46.2 287.6 Up 09:01:28 - 09:16:24 2497
Blythe 09:08:44 -62.2 Dark Down 42.9 289.3 Up 09:01:16 - 09:16:12 2476
Idyllwild 09:08:50 -63.7 Dark Down 44.6 288.5 Up 09:01:22 - 09:16:18 2470
Calipatria 09:08:48 -63.1 Dark Down 43.5 289.4 Up 09:01:20 - 09:16:16 2415
Yuma 09:08:45 -62.6 Dark Down 42.6 290.1 Up 09:01:17 - 09:16:13 2377

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 2017/12/15 17:13:42 UT

Marc W. Buie, Southwest Research Institute

RECON