RECON: TNO occultation with 143707

Event between (143707) 03UY117 and star GA1100:00331639 with event index number of 165442

Geocentric closest approach at 2018/11/20 10:26:38 UTC

J2000 position of star is 03:02:26.9 +21:55:57
Equinox of date position of star is 03:03:30.7 +22:00:14
Stellar brightness G=14.3, use SENSEUP=64
Star is 28 degrees from the moon. Moon is 91% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 34.0 AU from the Sun and 33.0 AU from the Earth.
The TNO is moving 23.9 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 104 seconds.
The 1-sigma cross-track error in the shadow position is 1355 km.
The sky-plane scale is 23923.8 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 18.3 sec chord
Diameter=178.2 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 143707, (2018/11/20 10:27UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.4 +16:32:45  0.8 22.70  47
Hamal          02:08:14.5 +23:33:03  2.0 12.83  21
48Eps Ari      03:00:17.7 +21:24:53  5.6  0.96  27
PPM 092164     03:03:33.1 +22:26:48  8.3  0.44  29
PPM 092173     03:04:06.9 +22:03:37  9.2  0.14  28
143707         03:03:32.3 +22:00:21 14.3        29
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 26.8 km RECON observability=1.0 and success probability=11.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 10:23:46 -46.5 Dark Up 42.1 253.6 Up 10:14:37 - 10:32:54 -2113
Oroville 10:23:44 -46.7 Dark Up 42.2 254.2 Up 10:14:36 - 10:32:53 -2174
Tonasket 10:23:44 -46.8 Dark Up 42.2 254.4 Up 10:14:36 - 10:32:53 -2198
Okanogan 10:23:44 -47.0 Dark Up 42.4 254.6 Up 10:14:36 - 10:32:53 -2234
Brewster 10:23:44 -47.3 Dark Up 42.6 254.6 Up 10:14:35 - 10:32:52 -2263
Manson/Chelan 10:23:45 -47.6 Dark Up 42.9 254.5 Up 10:14:36 - 10:32:53 -2287
Entiat 10:23:45 -47.7 Dark Up 43.0 254.6 Up 10:14:36 - 10:32:53 -2310
Wenatchee 10:23:44 -47.9 Dark Up 43.1 254.8 Up 10:14:36 - 10:32:53 -2337
Ellensburg 10:23:44 -48.2 Dark Up 43.4 254.9 Up 10:14:36 - 10:32:53 -2382
Yakima 10:23:44 -48.4 Dark Up 43.5 255.3 Up 10:14:35 - 10:32:52 -2425
Toppenish/White Swan 10:23:43 -48.4 Dark Up 43.4 255.6 Up 10:14:35 - 10:32:52 -2447
Pasco 10:23:40 -47.7 Dark Up 42.6 256.9 Up 10:14:32 - 10:32:49 -2453
PNWRO 10:23:39 -47.6 Dark Up 42.5 257.3 Up 10:14:31 - 10:32:48 -2478
George/Umatilla 10:23:40 -48.0 Dark Up 42.8 257.0 Up 10:14:32 - 10:32:49 -2490
Goldendale 10:23:44 -48.9 Dark Up 43.9 255.8 Up 10:14:35 - 10:32:52 -2507
The Dalles 10:23:44 -49.3 Dark Up 44.2 255.7 Up 10:14:36 - 10:32:53 -2532
Maupin 10:23:43 -49.4 Dark Up 44.2 256.2 Up 10:14:35 - 10:32:52 -2576
Madras/Culver 10:23:43 -49.6 Dark Up 44.4 256.6 Up 10:14:35 - 10:32:52 -2635
Sisters 10:23:44 -50.1 Dark Up 44.7 256.6 Up 10:14:35 - 10:32:52 -2672
Redmond 10:23:43 -49.8 Dark Up 44.5 256.9 Up 10:14:35 - 10:32:52 -2673
Bend 10:23:43 -50.0 Dark Up 44.6 257.0 Up 10:14:35 - 10:32:52 -2697
Oregon Observatory 10:23:43 -50.2 Dark Up 44.8 257.1 Up 10:14:35 - 10:32:52 -2716
La Pine/Gilchrist 10:23:43 -50.3 Dark Up 44.8 257.2 Up 10:14:35 - 10:32:52 -2738
North Lake 10:23:41 -50.1 Dark Up 44.5 258.1 Up 10:14:33 - 10:32:50 -2782
Paisley 10:23:40 -50.1 Dark Up 44.4 259.0 Up 10:14:31 - 10:32:48 -2839
Chiloquin 10:23:43 -51.0 Dark Up 45.3 258.0 Up 10:14:34 - 10:32:51 -2859
Lakeview 10:23:39 -50.1 Dark Up 44.3 259.6 Up 10:14:30 - 10:32:47 -2893
Klamath Falls 10:23:43 -51.1 Dark Up 45.3 258.4 Up 10:14:34 - 10:32:51 -2895
Tulelake 10:23:41 -51.0 Dark Up 45.2 258.9 Up 10:14:33 - 10:32:50 -2923
Niwot 10:23:04 -39.7 Dark Up 33.2 271.9 Up 10:13:55 - 10:32:12 -2962
Cedarville 10:23:38 -50.2 Dark Up 44.3 260.4 Up 10:14:29 - 10:32:46 -2963
Fall River/Burney 10:23:40 -51.3 Dark Up 45.3 259.9 Up 10:14:32 - 10:32:49 -3021
Susanville 10:23:38 -51.0 Dark Up 44.8 261.1 Up 10:14:30 - 10:32:47 -3086
Gimple 10:23:38 -51.2 Dark Up 45.0 261.2 Up 10:14:30 - 10:32:47 -3117
Greenville 10:23:38 -51.3 Dark Up 45.1 261.1 Up 10:14:30 - 10:32:47 -3117
Quincy 10:23:38 -51.3 Dark Up 45.1 261.3 Up 10:14:30 - 10:32:47 -3139
Portola 10:23:37 -51.0 Dark Up 44.8 261.8 Up 10:14:29 - 10:32:46 -3150
Reno 10:23:35 -50.7 Dark Up 44.3 262.5 Up 10:14:27 - 10:32:44 -3176
Carson City 10:23:35 -50.8 Dark Up 44.4 262.9 Up 10:14:26 - 10:32:43 -3215
Yerington 10:23:33 -50.4 Dark Up 43.9 263.6 Up 10:14:24 - 10:32:41 -3232
Gardnerville 10:23:35 -50.8 Dark Up 44.4 263.2 Up 10:14:26 - 10:32:43 -3241
Hawthorne 10:23:31 -50.1 Dark Up 43.6 264.4 Up 10:14:23 - 10:32:40 -3280
Tonopah 10:23:27 -49.2 Dark Up 42.5 265.8 Up 10:14:19 - 10:32:36 -3321
Lee Vining 10:23:32 -50.6 Dark Up 44.0 264.6 Up 10:14:24 - 10:32:41 -3344
Bishop 10:23:30 -50.2 Dark Up 43.5 265.6 Up 10:14:21 - 10:32:38 -3405
Beatty 10:23:25 -49.1 Dark Up 42.2 267.1 Up 10:14:17 - 10:32:34 -3444
Indian Springs 10:23:22 -48.3 Dark Up 41.4 268.1 Up 10:14:14 - 10:32:31 -3471
Lone Pine 10:23:28 -50.2 Dark Up 43.3 266.5 Up 10:14:20 - 10:32:37 -3486
Henderson 10:23:21 -47.9 Dark Up 40.8 268.9 Up 10:14:12 - 10:32:29 -3523
Patrick 10:23:17 -47.1 Dark Up 39.9 270.1 Up 10:14:09 - 10:32:26 -3581
Searchlight/Boulder City 10:23:20 -47.9 Dark Up 40.8 269.5 Up 10:14:11 - 10:32:28 -3585
DCO 10:23:15 -46.6 Dark Up 39.4 270.8 Up 10:14:07 - 10:32:24 -3607
Kingman/Dolan Springs 10:23:18 -47.3 Dark Up 40.1 270.2 Up 10:14:09 - 10:32:26 -3607
Laughlin/Bullhead City 10:23:19 -47.7 Dark Up 40.5 269.9 Up 10:14:10 - 10:32:27 -3614
Mohave Valley 10:23:18 -47.8 Dark Up 40.5 270.2 Up 10:14:10 - 10:32:27 -3644
CPSLO 10:23:34 -52.5 Dark Up 45.4 266.2 Up 10:14:26 - 10:32:43 -3644
Lake Havasu City 10:23:18 -47.6 Dark Up 40.3 270.6 Up 10:14:09 - 10:32:26 -3686
Parker 10:23:17 -47.6 Dark Up 40.3 271.0 Up 10:14:09 - 10:32:26 -3724
Wildwood 10:23:28 -51.1 Dark Up 43.8 268.6 Up 10:14:20 - 10:32:37 -3765
Blythe 10:23:18 -48.0 Dark Up 40.5 271.2 Up 10:14:09 - 10:32:26 -3784
Idyllwild 10:23:23 -49.7 Dark Up 42.3 270.0 Up 10:14:14 - 10:32:31 -3791
Calipatria 10:23:20 -48.8 Dark Up 41.3 271.2 Up 10:14:11 - 10:32:28 -3847
Yuma 10:23:17 -48.1 Dark Up 40.5 272.0 Up 10:14:09 - 10:32:26 -3886

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 143707, (2018/11/20 10:27UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 22.70  47
Hamal          02:07:10.7 +23:27:42  2.0 12.83  21
48Eps Ari      02:59:12.7 +21:20:25  5.6  0.96  27
PPM 092164     03:02:27.5 +22:22:24  8.3  0.44  29
PPM 092173     03:03:01.5 +21:59:14  9.2  0.14  28
143707         03:02:26.9 +21:55:57 14.3        28
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:34:51 UT

Marc W. Buie, Southwest Research Institute

RECON