RECON: TNO occultation with 07RH283

Event between 07RH283 and star UC4-624-012086 with event index number of 183464

Geocentric closest approach at 2019/03/18 05:07:31 UTC

J2000 position of star is 03:42:01.0 +34:38:00
Equinox of date position of star is 03:43:09.8 +34:41:23
Stellar brightness R=16.2, use SENSEUP=128
Star is 76 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 21.0 AU from the Sun and 21.4 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 179 seconds.
The 1-sigma cross-track error in the shadow position is 1390 km.
The sky-plane scale is 15523.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.5
Diameter=121.9 km assuming a 5% albedo -- 6.2 sec chord
Diameter=49.8 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 07RH283, (2019/03/18 05:08UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.5 +16:32:47  0.8 21.77  68
44Zet Per      03:55:20.7 +31:56:21  2.8  3.74  74
40 Per         03:43:36.0 +34:01:31  4.8  0.67  76
PPM 068723     03:44:37.5 +34:10:33  7.6  0.59  76
PPM 068691     03:42:37.0 +35:02:27  8.7  0.37  76
07RH283        03:43:14.7 +34:41:37 16.2        76
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 11.9 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 05:10:57 -42.7 Dark Up 19.8 299.1 Really Low 04:55:57 - 05:25:57 8894
Oroville 05:10:18 -29.2 Dark Up 32.7 287.0 Up 04:55:18 - 05:25:18 8702
Tonasket 05:10:19 -29.3 Dark Up 32.6 287.1 Up 04:55:19 - 05:25:19 8690
Okanogan 05:10:21 -29.4 Dark Up 32.6 287.2 Up 04:55:21 - 05:25:21 8666
Brewster 05:10:22 -29.5 Dark Up 32.6 287.3 Up 04:55:22 - 05:25:22 8643
Manson/Chelan 05:10:23 -29.4 Dark Up 32.8 287.2 Up 04:55:23 - 05:25:23 8615
Entiat 05:10:24 -29.5 Dark Up 32.8 287.3 Up 04:55:24 - 05:25:24 8600
Wenatchee 05:10:25 -29.6 Dark Up 32.8 287.4 Up 04:55:25 - 05:25:25 8582
Pasco 05:10:31 -31.0 Dark Up 31.6 288.8 Up 04:55:31 - 05:25:31 8573
PNWRO 05:10:32 -31.2 Dark Up 31.4 289.1 Up 04:55:32 - 05:25:32 8570
Ellensburg 05:10:27 -29.7 Dark Up 32.8 287.5 Up 04:55:27 - 05:25:27 8550
George/Umatilla 05:10:33 -31.0 Dark Up 31.6 288.9 Up 04:55:33 - 05:25:33 8545
Yakima 05:10:29 -30.0 Dark Up 32.7 287.7 Up 04:55:29 - 05:25:29 8527
Toppenish/White Swan 05:10:30 -30.2 Dark Up 32.5 288.0 Up 04:55:30 - 05:25:30 8522
Goldendale 05:10:32 -30.3 Dark Up 32.6 288.1 Up 04:55:32 - 05:25:32 8472
The Dalles 05:10:33 -30.2 Dark Up 32.8 288.0 Up 04:55:33 - 05:25:33 8442
Maupin 05:10:35 -30.5 Dark Up 32.6 288.3 Up 04:55:35 - 05:25:35 8423
Madras/Culver 05:10:38 -30.8 Dark Up 32.4 288.6 Up 04:55:38 - 05:25:38 8389
Redmond 05:10:39 -30.9 Dark Up 32.3 288.8 Up 04:55:39 - 05:25:39 8366
Sisters 05:10:39 -30.7 Dark Up 32.6 288.6 Up 04:55:39 - 05:25:39 8348
Bend 05:10:40 -31.0 Dark Up 32.3 288.9 Up 04:55:40 - 05:25:40 8347
Oregon Observatory 05:10:40 -31.0 Dark Up 32.4 288.9 Up 04:55:40 - 05:25:40 8330
North Lake 05:10:43 -31.7 Dark Up 31.8 289.6 Up 04:55:43 - 05:25:43 8318
La Pine/Gilchrist 05:10:42 -31.1 Dark Up 32.3 289.0 Up 04:55:42 - 05:25:42 8315
Paisley 05:10:46 -32.2 Dark Up 31.3 290.1 Up 04:55:46 - 05:25:46 8302
Lakeview 05:10:49 -32.6 Dark Up 31.0 290.5 Up 04:55:49 - 05:25:49 8281
Cedarville 05:10:52 -33.1 Dark Up 30.7 291.0 Up 04:55:52 - 05:25:52 8250
Chiloquin 05:10:47 -31.5 Dark Up 32.2 289.5 Up 04:55:47 - 05:25:47 8231
Klamath Falls 05:10:47 -31.7 Dark Up 32.0 289.7 Up 04:55:47 - 05:25:47 8214
Tulelake 05:10:49 -32.0 Dark Up 31.7 290.0 Up 04:55:49 - 05:25:49 8212
DCO 05:11:20 -41.4 Dark Up 22.9 297.2 Low 04:56:20 - 05:26:20 8209
Patrick 05:11:19 -40.7 Dark Up 23.6 296.8 Low 04:56:19 - 05:26:19 8191
Tonopah 05:11:07 -37.0 Dark Up 27.2 294.2 Low 04:56:07 - 05:26:07 8184
Henderson 05:11:16 -39.6 Dark Up 24.7 296.0 Low 04:56:16 - 05:26:16 8172
Indian Springs 05:11:14 -38.8 Dark Up 25.4 295.5 Low 04:56:14 - 05:26:14 8170
Kingman/Dolan Springs 05:11:20 -40.7 Dark Up 23.6 296.8 Low 04:56:20 - 05:26:20 8167
Fall River/Burney 05:10:53 -32.6 Dark Up 31.3 290.6 Up 04:55:53 - 05:25:53 8160
Susanville 05:10:56 -33.4 Dark Up 30.6 291.3 Up 04:55:56 - 05:25:56 8157
Reno 05:11:00 -34.4 Dark Up 29.7 292.2 Low 04:56:00 - 05:26:00 8145
Yerington 05:11:02 -35.2 Dark Up 29.0 292.8 Low 04:56:02 - 05:26:02 8143
Hawthorne 05:11:05 -35.8 Dark Up 28.4 293.3 Low 04:56:05 - 05:26:05 8141
Searchlight/Boulder City 05:11:18 -40.0 Dark Up 24.4 296.3 Low 04:56:18 - 05:26:18 8139
Laughlin/Bullhead City 05:11:20 -40.4 Dark Up 24.0 296.6 Low 04:56:20 - 05:26:20 8138
Beatty 05:11:12 -37.9 Dark Up 26.4 294.9 Low 04:56:12 - 05:26:12 8134
Gimple 05:10:57 -33.4 Dark Up 30.6 291.4 Up 04:55:57 - 05:25:57 8129
Portola 05:10:59 -33.9 Dark Up 30.2 291.8 Up 04:55:59 - 05:25:59 8129
Greenville 05:10:57 -33.4 Dark Up 30.7 291.3 Up 04:55:57 - 05:25:57 8125
Carson City 05:11:02 -34.6 Dark Up 29.5 292.4 Low 04:56:02 - 05:26:02 8123
Mohave Valley 05:11:20 -40.5 Dark Up 23.9 296.7 Low 04:56:20 - 05:26:20 8121
Quincy 05:10:58 -33.5 Dark Up 30.6 291.5 Up 04:55:58 - 05:25:58 8112
Gardnerville 05:11:02 -34.8 Dark Up 29.4 292.6 Low 04:56:02 - 05:26:02 8110
Lake Havasu City 05:11:22 -40.9 Dark Up 23.5 297.0 Low 04:56:22 - 05:26:22 8108
Parker 05:11:24 -41.2 Dark Up 23.3 297.1 Low 04:56:24 - 05:26:24 8087
Lee Vining 05:11:07 -35.7 Dark Up 28.5 293.4 Low 04:56:07 - 05:26:07 8080
Bishop 05:11:10 -36.6 Dark Up 27.7 294.0 Low 04:56:10 - 05:26:10 8079
Lone Pine 05:11:13 -37.2 Dark Up 27.2 294.5 Low 04:56:13 - 05:26:13 8047
Blythe 05:11:25 -41.2 Dark Up 23.3 297.2 Low 04:56:25 - 05:26:25 8037
Yuma 05:11:29 -41.7 Dark Up 22.9 297.5 Low 04:56:29 - 05:26:29 7973
Calipatria 05:11:27 -40.9 Dark Up 23.7 297.0 Low 04:56:27 - 05:26:27 7954
Idyllwild 05:11:25 -39.7 Dark Up 24.9 296.3 Low 04:56:25 - 05:26:25 7930
Wildwood 05:11:23 -38.2 Dark Up 26.5 295.4 Low 04:56:23 - 05:26:23 7852
CPSLO 05:11:17 -36.1 Dark Up 28.5 294.0 Low 04:56:17 - 05:26:17 7823

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 07RH283, (2019/03/18 05:08UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 21.77  68
44Zet Per      03:54:07.9 +31:53:01  2.8  3.74  74
40 Per         03:42:22.6 +33:57:54  4.8  0.67  76
PPM 068723     03:43:24.0 +34:06:58  7.6  0.59  76
PPM 068691     03:41:23.1 +34:58:49  8.7  0.37  76
07RH283        03:42:01.0 +34:38:00 16.2        76
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:19:08 UT

Marc W. Buie, Southwest Research Institute

RECON