RECON: TNO occultation with 55636

Event between (55636) 02TX300 and star GA1240:00243616 with event index number of 171964

Geocentric closest approach at 2018/12/15 07:44:27 UTC

J2000 position of star is 01:18:39.4 +35:00:11
Equinox of date position of star is 01:19:41.9 +35:05:58
Stellar brightness G=16.3, use SENSEUP=128
Star is 49 degrees from the moon. Moon is 48% illuminated.
TNO apparent brightness V=19.8

[RECON map]
TNO is 42.6 AU from the Sun and 42.0 AU from the Earth.
The TNO is moving 17.0 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is 2262 km.
The sky-plane scale is 30490.1 km/arcsec.

The TNO has an absolute magnitude Hv=3.4
Diameter=1259.0 km assuming a 5% albedo -- 74.0 sec chord
Diameter=514.0 km assuming a 30% albedo -- 30.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 55636, (2018/12/15 07:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.6 +16:32:45  0.8 47.55  78
57Gam1And      02:05:04.3 +42:25:11  2.3 11.46  60
PPM 066072     01:14:19.9 +34:11:55  6.5  1.43  47
PPM 066115     01:16:45.1 +34:49:32  8.5  0.67  48
PPM 066152     01:19:39.1 +34:54:08  9.6  0.20  49
55636          01:19:43.7 +35:06:08 16.3        49
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 25.2 km RECON observability=1.0 and success probability=12.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 07:40:16 -63.6 Dark Down 44.8 274.7 Up 07:30:00 - 07:50:33 4250
Oroville 07:40:17 -64.2 Dark Down 44.6 275.4 Up 07:30:01 - 07:50:34 4185
Tonasket 07:40:17 -64.4 Dark Down 44.6 275.6 Up 07:30:01 - 07:50:34 4160
Okanogan 07:40:19 -64.8 Dark Down 44.7 275.9 Up 07:30:02 - 07:50:35 4126
Brewster 07:40:20 -65.0 Dark Down 44.8 276.0 Up 07:30:03 - 07:50:36 4099
Manson/Chelan 07:40:22 -65.2 Dark Down 45.0 276.0 Up 07:30:05 - 07:50:38 4081
Entiat 07:40:22 -65.4 Dark Down 45.0 276.1 Up 07:30:06 - 07:50:39 4059
Wenatchee 07:40:23 -65.6 Dark Down 45.0 276.3 Up 07:30:06 - 07:50:39 4033
Ellensburg 07:40:24 -66.0 Dark Down 45.1 276.6 Up 07:30:08 - 07:50:41 3992
Yakima 07:40:25 -66.4 Dark Down 45.1 277.0 Up 07:30:09 - 07:50:42 3949
Toppenish/White Swan 07:40:25 -66.7 Dark Down 45.0 277.3 Up 07:30:09 - 07:50:42 3924
Pasco 07:40:21 -66.9 Dark Down 44.1 278.2 Up 07:30:05 - 07:50:38 3897
Goldendale 07:40:27 -67.2 Dark Down 45.2 277.6 Up 07:30:11 - 07:50:44 3872
PNWRO 07:40:21 -67.2 Dark Down 43.9 278.6 Up 07:30:05 - 07:50:38 3868
George/Umatilla 07:40:23 -67.2 Dark Down 44.2 278.4 Up 07:30:07 - 07:50:40 3864
The Dalles 07:40:30 -67.3 Dark Down 45.4 277.6 Up 07:30:13 - 07:50:46 3853
Maupin 07:40:30 -67.8 Dark Down 45.3 278.1 Up 07:30:13 - 07:50:46 3808
Madras/Culver 07:40:31 -68.3 Dark Down 45.2 278.6 Up 07:30:14 - 07:50:47 3751
Sisters 07:40:34 -68.5 Dark Down 45.5 278.7 Up 07:30:17 - 07:50:50 3723
Redmond 07:40:32 -68.6 Dark Down 45.2 278.9 Up 07:30:16 - 07:50:49 3715
Bend 07:40:33 -68.8 Dark Down 45.2 279.1 Up 07:30:17 - 07:50:50 3695
Oregon Observatory 07:40:34 -69.0 Dark Down 45.3 279.2 Up 07:30:17 - 07:50:50 3678
La Pine/Gilchrist 07:40:34 -69.2 Dark Down 45.3 279.3 Up 07:30:18 - 07:50:51 3658
North Lake 07:40:33 -69.7 Dark Down 44.8 280.1 Up 07:30:17 - 07:50:50 3605
Chiloquin 07:40:38 -70.2 Dark Down 45.4 280.3 Up 07:30:21 - 07:50:54 3549
Paisley 07:40:33 -70.3 Dark Down 44.5 280.8 Up 07:30:17 - 07:50:50 3543
Klamath Falls 07:40:39 -70.5 Dark Down 45.3 280.6 Up 07:30:22 - 07:50:55 3512
Lakeview 07:40:34 -70.8 Dark Down 44.2 281.4 Up 07:30:18 - 07:50:51 3488
Tulelake 07:40:39 -70.8 Dark Down 45.0 281.1 Up 07:30:22 - 07:50:55 3480
Cedarville 07:40:35 -71.5 Dark Down 43.9 282.2 Up 07:30:19 - 07:50:52 3419
Fall River/Burney 07:40:41 -71.7 Dark Down 44.7 282.0 Up 07:30:24 - 07:50:57 3386
Susanville 07:40:39 -72.5 Dark Down 44.1 283.0 Up 07:30:23 - 07:50:56 3312
Greenville 07:40:41 -72.7 Dark Down 44.2 283.1 Up 07:30:25 - 07:50:58 3288
Gimple 07:40:41 -72.7 Dark Down 44.1 283.1 Up 07:30:24 - 07:50:57 3287
Quincy 07:40:41 -72.9 Dark Down 44.2 283.3 Up 07:30:25 - 07:50:58 3267
Portola 07:40:40 -73.1 Dark Down 43.8 283.6 Up 07:30:24 - 07:50:57 3248
Niwot 07:39:49 -70.8 Dark Down 32.8 290.4 Up 07:29:32 - 07:50:05 3218
Reno 07:40:38 -73.5 Dark Down 43.2 284.2 Up 07:30:22 - 07:50:55 3212
Carson City 07:40:39 -73.8 Dark Down 43.1 284.5 Up 07:30:23 - 07:50:56 3176
Gardnerville 07:40:39 -74.1 Dark Down 43.0 284.8 Up 07:30:23 - 07:50:56 3151
Yerington 07:40:38 -74.1 Dark Down 42.6 285.0 Up 07:30:21 - 07:50:54 3148
Hawthorne 07:40:37 -74.6 Dark Down 42.1 285.6 Up 07:30:21 - 07:50:54 3095
Lee Vining 07:40:40 -75.1 Dark Down 42.3 285.9 Up 07:30:23 - 07:50:56 3045
Tonopah 07:40:33 -75.2 Dark Down 40.9 286.6 Up 07:30:17 - 07:50:50 3033
Bishop 07:40:39 -75.8 Dark Down 41.6 286.7 Up 07:30:22 - 07:50:55 2977
Beatty 07:40:34 -76.4 Dark Down 40.2 287.7 Up 07:30:18 - 07:50:51 2914
Lone Pine 07:40:40 -76.6 Dark Down 41.1 287.5 Up 07:30:23 - 07:50:56 2897
Indian Springs 07:40:31 -76.7 Dark Down 39.3 288.4 Up 07:30:15 - 07:50:48 2872
Henderson 07:40:30 -77.2 Dark Down 38.6 289.1 Up 07:30:14 - 07:50:47 2814
CPSLO 07:40:52 -77.4 Dark Up 42.7 287.7 Up 07:30:36 - 07:51:09 2804
Searchlight/Boulder City 07:40:31 -77.7 Dark Down 38.3 289.5 Up 07:30:14 - 07:50:47 2757
Patrick 07:40:27 -77.7 Dark Down 37.5 290.0 Up 07:30:10 - 07:50:43 2745
Laughlin/Bullhead City 07:40:30 -78.0 Dark Down 38.0 289.9 Up 07:30:14 - 07:50:47 2725
Kingman/Dolan Springs 07:40:29 -77.9 Dark Down 37.6 290.1 Up 07:30:12 - 07:50:45 2724
DCO 07:40:25 -77.8 Dark Down 36.9 290.4 Up 07:30:09 - 07:50:42 2711
Mohave Valley 07:40:31 -78.3 Dark Down 37.9 290.1 Up 07:30:14 - 07:50:47 2699
Wildwood 07:40:48 -79.0 Dark Down 40.7 289.4 Up 07:30:32 - 07:51:05 2659
Lake Havasu City 07:40:31 -78.6 Dark Down 37.5 290.5 Up 07:30:15 - 07:50:48 2658
Parker 07:40:32 -79.0 Dark Down 37.4 290.7 Up 07:30:16 - 07:50:49 2624
Idyllwild 07:40:42 -79.5 Dark Down 39.1 290.2 Up 07:30:25 - 07:50:58 2604
Blythe 07:40:34 -79.5 Dark Down 37.4 291.0 Up 07:30:18 - 07:50:51 2575
Calipatria 07:40:39 -80.1 Dark Down 38.0 291.1 Up 07:30:23 - 07:50:56 2535
Yuma 07:40:37 -80.4 Dark Down 37.1 291.7 Up 07:30:21 - 07:50:54 2487

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, (2018/12/15 07:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 47.55  78
57Gam1And      02:03:54.0 +42:19:46  2.3 11.46  60
PPM 066072     01:13:16.2 +34:05:54  6.5  1.43  47
PPM 066115     01:15:41.1 +34:43:33  8.5  0.67  48
PPM 066152     01:18:34.9 +34:48:10  9.6  0.20  49
55636          01:18:39.4 +35:00:11 16.3        49
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:38:40 UT

Marc W. Buie, Southwest Research Institute

RECON