RECON: TNO occultation with 492338

Event between (492338) 14FW and star UC4-413-063031 with event index number of 193979

Geocentric closest approach at 2018/03/16 10:50:48 UTC

J2000 position of star is 15:23:00.6 -07:31:16
Equinox of date position of star is 15:23:56.7 -07:34:57
Stellar brightness R=12.3, use SENSEUP=16
Star is 113 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=20.6

[RECON map]
TNO is 10.8 AU from the Sun and 10.2 AU from the Earth.
The TNO is moving 6.3 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 152 seconds.
The 1-sigma cross-track error in the shadow position is 882 km.
The sky-plane scale is 7433.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=60.3 km assuming a 5% albedo -- 9.6 sec chord
Diameter=24.6 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 492338, (2018/03/16 10:51UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.6 -26:28:15  0.9 24.63  93
27Bet Lib      15:17:59.3 -09:26:56  2.6  2.38 114
PPM 198488     15:22:05.4 -05:53:22  5.4  1.76 113
PPM 198498     15:22:30.8 -06:53:29  7.6  0.78 113
PPM 198522     15:23:25.0 -07:22:16  9.0  0.26 113
492338         15:23:59.1 -07:35:06 12.3       112
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 12.7 km RECON observability=1.0 and success probability=1.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 10:58:20 -25.6 Dark Down 42.3 183.6 Up 10:45:10 - 11:11:30 3852
Oroville 11:01:23 -29.8 Dark Down 32.7 167.2 Up 10:48:13 - 11:14:33 3613
Tonasket 11:01:23 -29.9 Dark Down 33.0 167.1 Up 10:48:13 - 11:14:33 3600
Okanogan 11:01:23 -30.2 Dark Down 33.3 166.9 Up 10:48:13 - 11:14:33 3573
Brewster 11:01:26 -30.4 Dark Down 33.5 166.7 Up 10:48:16 - 11:14:36 3548
Manson/Chelan 11:01:28 -30.8 Dark Down 33.7 166.2 Up 10:48:18 - 11:14:38 3518
Entiat 11:01:28 -30.9 Dark Down 33.9 166.1 Up 10:48:18 - 11:14:38 3501
Wenatchee 11:01:23 -31.2 Dark Down 34.1 165.9 Up 10:48:13 - 11:14:33 3481
Pasco 11:01:10 -31.2 Dark Down 35.4 167.1 Up 10:48:00 - 11:14:20 3472
PNWRO 11:01:05 -31.2 Dark Down 35.7 167.3 Up 10:47:55 - 11:14:15 3468
Ellensburg 11:01:27 -31.5 Dark Down 34.5 165.6 Up 10:48:17 - 11:14:37 3446
George/Umatilla 11:01:09 -31.5 Dark Down 35.7 166.8 Up 10:47:59 - 11:14:19 3440
Yakima 11:01:23 -31.8 Dark Down 34.8 165.5 Up 10:48:13 - 11:14:33 3420
Toppenish/White Swan 11:01:19 -31.8 Dark Down 35.1 165.6 Up 10:48:09 - 11:14:29 3415
Goldendale 11:01:22 -32.4 Dark Down 35.5 165.0 Up 10:48:12 - 11:14:32 3360
The Dalles 11:01:26 -32.7 Dark Down 35.7 164.6 Up 10:48:16 - 11:14:36 3327
Maupin 11:01:19 -32.9 Dark Down 36.1 164.6 Up 10:48:09 - 11:14:29 3307
Madras/Culver 11:01:18 -33.3 Dark Down 36.6 164.4 Up 10:48:08 - 11:14:28 3270
Redmond 11:01:18 -33.5 Dark Down 37.0 164.3 Up 10:48:08 - 11:14:28 3245
Sisters 11:01:20 -33.7 Dark Down 36.9 163.8 Up 10:48:10 - 11:14:30 3226
Bend 11:01:19 -33.7 Dark Down 37.1 164.1 Up 10:48:09 - 11:14:29 3224
Oregon Observatory 11:01:17 -33.9 Dark Down 37.3 163.9 Up 10:48:07 - 11:14:27 3206
North Lake 11:01:09 -34.0 Dark Down 38.0 164.4 Up 10:47:59 - 11:14:19 3194
La Pine/Gilchrist 11:01:17 -34.1 Dark Down 37.5 163.7 Up 10:48:07 - 11:14:27 3190
Paisley 11:01:03 -34.1 Dark Down 38.6 164.7 Up 10:47:53 - 11:14:13 3177
Lakeview 11:00:59 -34.3 Dark Down 39.1 164.8 Up 10:47:49 - 11:14:09 3155
Cedarville 11:00:54 -34.6 Dark Down 39.8 164.8 Up 10:47:44 - 11:14:04 3121
Chiloquin 11:01:14 -34.9 Dark Down 38.5 163.0 Up 10:48:04 - 11:14:24 3099
DCO 10:59:00 -33.3 Dark Down 47.1 172.5 Up 10:45:50 - 11:12:10 3094
Klamath Falls 11:01:13 -35.1 Dark Down 38.8 163.1 Up 10:48:03 - 11:14:23 3080
Tulelake 11:01:08 -35.1 Dark Down 39.1 163.3 Up 10:47:58 - 11:14:18 3079
Patrick 10:59:11 -33.6 Dark Down 46.7 171.6 Up 10:46:01 - 11:12:21 3073
Tonopah 11:00:05 -34.6 Dark Down 43.7 167.7 Up 10:46:55 - 11:13:15 3056
Henderson 10:59:25 -34.1 Dark Down 46.0 170.1 Up 10:46:15 - 11:12:35 3049
Kingman/Dolan Springs 10:59:11 -33.9 Dark Down 46.9 171.2 Up 10:46:01 - 11:12:21 3047
Indian Springs 10:59:39 -34.3 Dark Down 45.3 169.4 Up 10:46:29 - 11:12:49 3045
Fall River/Burney 11:01:03 -35.6 Dark Down 40.0 163.2 Up 10:47:53 - 11:14:13 3022
Susanville 11:00:53 -35.5 Dark Down 40.8 163.9 Up 10:47:43 - 11:14:03 3021
Searchlight/Boulder City 10:59:22 -34.3 Dark Down 46.5 170.1 Up 10:46:12 - 11:12:32 3015
Laughlin/Bullhead City 10:59:18 -34.2 Dark Down 46.9 170.5 Up 10:46:08 - 11:12:28 3015
Reno 11:00:40 -35.5 Dark Down 41.8 164.8 Up 10:47:30 - 11:13:50 3009
Yerington 11:00:29 -35.4 Dark Down 42.4 165.4 Up 10:47:19 - 11:13:39 3008
Hawthorne 11:00:21 -35.3 Dark Down 43.0 166.0 Up 10:47:11 - 11:13:31 3007
Beatty 10:59:51 -34.9 Dark Down 44.9 168.0 Up 10:46:41 - 11:13:01 3004
Mohave Valley 10:59:15 -34.4 Dark Down 47.1 170.5 Up 10:46:05 - 11:12:25 2996
Portola 11:00:47 -35.7 Dark Down 41.4 164.0 Up 10:47:37 - 11:13:57 2991
Gimple 11:00:53 -35.8 Dark Down 41.0 163.6 Up 10:47:43 - 11:14:03 2991
Greenville 11:00:54 -35.8 Dark Down 41.0 163.5 Up 10:47:44 - 11:14:04 2986
Carson City 11:00:38 -35.7 Dark Down 42.1 164.7 Up 10:47:28 - 11:13:48 2986
Lake Havasu City 10:59:09 -34.4 Dark Down 47.6 170.7 Up 10:45:59 - 11:12:19 2984
Quincy 11:00:53 -36.0 Dark Down 41.2 163.5 Up 10:47:43 - 11:14:03 2973
Gardnerville 11:00:35 -35.8 Dark Down 42.4 164.7 Up 10:47:25 - 11:13:45 2972
Parker 10:59:06 -34.5 Dark Down 47.9 170.7 Up 10:45:56 - 11:12:16 2962
Bishop 11:00:09 -35.8 Dark Down 44.1 166.0 Up 10:46:59 - 11:13:19 2942
Lee Vining 11:00:20 -35.9 Dark Down 43.4 165.2 Up 10:47:10 - 11:13:30 2941
Lone Pine 11:00:02 -35.9 Dark Down 44.9 166.2 Up 10:46:52 - 11:13:12 2909
Blythe 10:59:07 -34.9 Dark Down 48.4 170.2 Up 10:45:57 - 11:12:17 2908
Yuma 10:58:57 -35.4 Dark Down 49.3 169.9 Up 10:45:47 - 11:12:07 2842
Calipatria 10:59:11 -35.8 Dark Down 48.7 168.7 Up 10:46:01 - 11:12:21 2818
Idyllwild 10:59:30 -36.4 Dark Down 47.9 167.2 Up 10:46:20 - 11:12:40 2790
Wildwood 10:59:51 -37.6 Dark Down 47.2 164.7 Up 10:46:41 - 11:13:01 2702
CPSLO 11:00:21 -38.4 Dark Down 45.6 162.4 Up 10:47:11 - 11:13:31 2666

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 492338, (2018/03/16 10:51UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 24.63  93
27Bet Lib      15:17:00.3 -09:22:59  2.6  2.38 114
PPM 198488     15:21:07.5 -05:49:30  5.4  1.76 113
PPM 198498     15:21:32.5 -06:49:37  7.6  0.78 113
PPM 198522     15:22:26.6 -07:18:25  9.0  0.26 113
492338         15:23:00.6 -07:31:16 12.3       113
Positions are for J2000

Event circumstances last updated at 2017/06/14 17:00:27 UT

Marc W. Buie, Southwest Research Institute

RECON