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 03:43:07.7 +34:41:17
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 158 seconds.
The 1-sigma cross-track error in the shadow position is 1274 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 05:10:56 -42.7 Dark Up 19.8 299.1 Really Low 04:57:15 - 05:24:36 8909
Oroville 05:10:18 -29.2 Dark Up 32.7 287.0 Up 04:56:38 - 05:23:59 8715
Tonasket 05:10:19 -29.3 Dark Up 32.6 287.1 Up 04:56:39 - 05:24:00 8703
Okanogan 05:10:21 -29.4 Dark Up 32.6 287.2 Up 04:56:40 - 05:24:01 8679
Brewster 05:10:22 -29.5 Dark Up 32.6 287.3 Up 04:56:41 - 05:24:02 8656
Manson/Chelan 05:10:23 -29.4 Dark Up 32.8 287.2 Up 04:56:42 - 05:24:03 8628
Entiat 05:10:24 -29.5 Dark Up 32.8 287.3 Up 04:56:44 - 05:24:05 8613
Wenatchee 05:10:25 -29.6 Dark Up 32.8 287.4 Up 04:56:45 - 05:24:06 8595
Pasco 05:10:31 -31.0 Dark Up 31.6 288.8 Up 04:56:51 - 05:24:12 8586
PNWRO 05:10:32 -31.2 Dark Up 31.4 289.1 Up 04:56:52 - 05:24:13 8584
Ellensburg 05:10:27 -29.7 Dark Up 32.8 287.5 Up 04:56:47 - 05:24:08 8563
George/Umatilla 05:10:33 -31.0 Dark Up 31.6 288.9 Up 04:56:52 - 05:24:13 8558
Yakima 05:10:29 -30.0 Dark Up 32.7 287.7 Up 04:56:49 - 05:24:10 8540
Toppenish/White Swan 05:10:30 -30.2 Dark Up 32.5 288.0 Up 04:56:50 - 05:24:11 8536
Goldendale 05:10:32 -30.3 Dark Up 32.6 288.1 Up 04:56:52 - 05:24:13 8485
The Dalles 05:10:33 -30.2 Dark Up 32.8 288.0 Up 04:56:53 - 05:24:14 8455
Maupin 05:10:35 -30.5 Dark Up 32.6 288.3 Up 04:56:55 - 05:24:16 8437
Madras/Culver 05:10:38 -30.8 Dark Up 32.4 288.6 Up 04:56:58 - 05:24:19 8403
Redmond 05:10:40 -30.9 Dark Up 32.3 288.8 Up 04:56:59 - 05:24:20 8380
Sisters 05:10:40 -30.7 Dark Up 32.6 288.6 Up 04:56:59 - 05:24:20 8363
Bend 05:10:40 -31.0 Dark Up 32.3 288.9 Up 04:57:00 - 05:24:21 8361
Oregon Observatory 05:10:41 -31.0 Dark Up 32.4 288.9 Up 04:57:00 - 05:24:21 8345
North Lake 05:10:44 -31.7 Dark Up 31.8 289.6 Up 04:57:04 - 05:24:25 8333
La Pine/Gilchrist 05:10:42 -31.1 Dark Up 32.3 289.0 Up 04:57:01 - 05:24:22 8330
Paisley 05:10:47 -32.2 Dark Up 31.3 290.1 Up 04:57:07 - 05:24:28 8317
Lakeview 05:10:49 -32.6 Dark Up 31.0 290.5 Up 04:57:08 - 05:24:29 8296
Cedarville 05:10:51 -33.1 Dark Up 30.7 290.9 Up 04:57:11 - 05:24:32 8265
Chiloquin 05:10:47 -31.5 Dark Up 32.2 289.5 Up 04:57:07 - 05:24:28 8246
Klamath Falls 05:10:48 -31.7 Dark Up 32.0 289.7 Up 04:57:08 - 05:24:29 8229
Tulelake 05:10:49 -32.0 Dark Up 31.7 290.0 Up 04:57:09 - 05:24:30 8227
DCO 05:11:20 -41.4 Dark Up 22.9 297.2 Low 04:57:40 - 05:25:01 8225
Patrick 05:11:18 -40.7 Dark Up 23.6 296.8 Low 04:57:38 - 05:24:59 8207
Tonopah 05:11:07 -37.0 Dark Up 27.2 294.2 Low 04:57:27 - 05:24:48 8200
Henderson 05:11:16 -39.6 Dark Up 24.7 296.0 Low 04:57:36 - 05:24:57 8188
Indian Springs 05:11:14 -38.8 Dark Up 25.4 295.5 Low 04:57:33 - 05:24:54 8186
Kingman/Dolan Springs 05:11:20 -40.7 Dark Up 23.6 296.8 Low 04:57:39 - 05:25:00 8183
Fall River/Burney 05:10:53 -32.6 Dark Up 31.3 290.6 Up 04:57:13 - 05:24:34 8175
Susanville 05:10:57 -33.4 Dark Up 30.6 291.3 Up 04:57:16 - 05:24:37 8173
Reno 05:11:00 -34.4 Dark Up 29.7 292.2 Low 04:57:19 - 05:24:40 8160
Yerington 05:11:03 -35.2 Dark Up 29.0 292.8 Low 04:57:22 - 05:24:43 8159
Hawthorne 05:11:05 -35.8 Dark Up 28.4 293.3 Low 04:57:25 - 05:24:46 8157
Searchlight/Boulder City 05:11:19 -40.0 Dark Up 24.4 296.3 Low 04:57:38 - 05:24:59 8155
Laughlin/Bullhead City 05:11:20 -40.4 Dark Up 24.0 296.6 Low 04:57:39 - 05:25:00 8153
Beatty 05:11:12 -37.9 Dark Up 26.4 294.9 Low 04:57:32 - 05:24:53 8150
Gimple 05:10:58 -33.4 Dark Up 30.6 291.4 Up 04:57:17 - 05:24:38 8144
Portola 05:10:59 -33.9 Dark Up 30.2 291.8 Up 04:57:19 - 05:24:40 8144
Greenville 05:10:57 -33.4 Dark Up 30.7 291.3 Up 04:57:17 - 05:24:38 8140
Carson City 05:11:02 -34.6 Dark Up 29.5 292.4 Low 04:57:21 - 05:24:42 8139
Mohave Valley 05:11:21 -40.5 Dark Up 23.9 296.7 Low 04:57:40 - 05:25:01 8136
Quincy 05:10:58 -33.5 Dark Up 30.6 291.5 Up 04:57:18 - 05:24:39 8128
Gardnerville 05:11:03 -34.8 Dark Up 29.4 292.6 Low 04:57:22 - 05:24:43 8126
Lake Havasu City 05:11:22 -40.9 Dark Up 23.5 297.0 Low 04:57:41 - 05:25:02 8124
Parker 05:11:24 -41.2 Dark Up 23.3 297.1 Low 04:57:43 - 05:25:04 8103
Lee Vining 05:11:07 -35.8 Dark Up 28.5 293.4 Low 04:57:27 - 05:24:48 8096
Bishop 05:11:10 -36.6 Dark Up 27.7 294.0 Low 04:57:29 - 05:24:50 8095
Lone Pine 05:11:13 -37.2 Dark Up 27.2 294.5 Low 04:57:33 - 05:24:54 8063
Blythe 05:11:25 -41.2 Dark Up 23.3 297.2 Low 04:57:45 - 05:25:06 8052
Yuma 05:11:29 -41.7 Dark Up 22.9 297.5 Low 04:57:49 - 05:25:10 7989
Calipatria 05:11:27 -40.9 Dark Up 23.7 297.0 Low 04:57:47 - 05:25:08 7969
Idyllwild 05:11:25 -39.7 Dark Up 24.9 296.3 Low 04:57:45 - 05:25:06 7947
Wildwood 05:11:23 -38.2 Dark Up 26.5 295.4 Low 04:57:43 - 05:25:04 7868
CPSLO 05:11:17 -36.1 Dark Up 28.5 294.0 Low 04:57:37 - 05:24:58 7839

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 2017/05/20 18:12:42 UT

Marc W. Buie, Southwest Research Institute

RECON