RECON: TNO occultation with 145451

Event between (145451) 05RM43 and star UC4-534-010144 with event index number of 170653

Geocentric closest approach at 2018/12/24 02:22:09 UTC

J2000 position of star is 04:52:51.2 +16:45:24
Equinox of date position of star is 04:53:53.4 +16:47:07
Stellar brightness R=13.5, use SENSEUP=32
Star is 37 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=20.1

[RECON map]
TNO is 37.0 AU from the Sun and 36.0 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 75 seconds.
The 1-sigma cross-track error in the shadow position is 1563 km.
The sky-plane scale is 26145.1 km/arcsec.

The TNO has an absolute magnitude Hv=4.4
Diameter=794.4 km assuming a 5% albedo -- 33.5 sec chord
Diameter=324.3 km assuming a 30% albedo -- 13.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 145451, (2018/12/24 02:22UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:46  0.8  4.06  41
Bellatrix      05:26:09.0 +06:21:55  1.6 13.06  34
PPM 120426     04:58:28.1 +17:10:54  6.3  1.15  36
PPM 120367     04:55:08.9 +17:03:23  7.5  0.39  37
PPM 120358     04:54:37.5 +16:51:06 10.8  0.17  37
145451         04:53:56.9 +16:47:13 13.5        37
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 20.9 km RECON observability=1.0 and success probability=23.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 02:24:57 -21.9 Dark Up 29.6 98.5 Low 02:18:14 - 02:31:39 2144
Tonasket 02:24:58 -21.8 Dark Up 29.7 98.4 Low 02:18:15 - 02:31:40 2124
Okanogan 02:24:59 -21.7 Dark Up 29.6 98.1 Low 02:18:16 - 02:31:41 2099
Brewster 02:25:00 -21.5 Dark Up 29.5 97.8 Low 02:18:17 - 02:31:42 2079
Manson/Chelan 02:25:01 -21.2 Dark Up 29.3 97.4 Low 02:18:19 - 02:31:44 2068
Entiat 02:25:02 -21.1 Dark Up 29.3 97.2 Low 02:18:20 - 02:31:45 2050
Wenatchee 02:25:03 -21.0 Dark Up 29.3 97.0 Low 02:18:20 - 02:31:45 2030
Ellensburg 02:25:04 -20.8 Dark Up 29.2 96.6 Low 02:18:22 - 02:31:47 1999
Yakima 02:25:06 -20.7 Dark Up 29.2 96.4 Low 02:18:23 - 02:31:48 1964
Toppenish/White Swan 02:25:06 -20.8 Dark Up 29.4 96.4 Low 02:18:23 - 02:31:48 1942
Pasco 02:25:04 -21.6 Dark Up 30.3 97.3 Up 02:18:22 - 02:31:47 1908
Goldendale 02:25:08 -20.4 Dark Up 29.1 95.7 Low 02:18:26 - 02:31:51 1902
The Dalles 02:25:09 -20.1 Dark Up 28.9 95.3 Low 02:18:27 - 02:31:52 1889
George/Umatilla 02:25:06 -21.4 Dark Up 30.1 96.9 Up 02:18:23 - 02:31:48 1883
PNWRO 02:25:05 -21.7 Dark Up 30.4 97.3 Up 02:18:22 - 02:31:47 1882
Maupin 02:25:10 -20.0 Dark Up 29.0 95.2 Low 02:18:28 - 02:31:53 1850
Madras/Culver 02:25:12 -19.9 Dark Up 29.0 94.9 Low 02:18:29 - 02:31:54 1803
Sisters 02:25:13 -19.5 Dark Up 28.8 94.4 Low 02:18:31 - 02:31:56 1782
Redmond 02:25:13 -19.8 Dark Up 29.0 94.6 Low 02:18:31 - 02:31:56 1772
Bend 02:25:13 -19.6 Dark Up 29.0 94.4 Low 02:18:31 - 02:31:56 1756
Oregon Observatory 02:25:14 -19.5 Dark Up 28.9 94.2 Low 02:18:32 - 02:31:57 1743
La Pine/Gilchrist 02:25:15 -19.4 Dark Up 28.9 94.1 Low 02:18:32 - 02:31:57 1726
North Lake 02:25:15 -19.7 Dark Up 29.3 94.3 Low 02:18:33 - 02:31:58 1675
Chiloquin 02:25:19 -18.9 Dark Up 28.7 93.2 Low 02:18:36 - 02:32:01 1633
Paisley 02:25:16 -19.8 Dark Up 29.6 94.2 Low 02:18:34 - 02:31:59 1618
Klamath Falls 02:25:20 -18.8 Dark Up 28.8 93.1 Low 02:18:37 - 02:32:02 1600
Tulelake 02:25:20 -19.0 Dark Up 29.0 93.2 Low 02:18:37 - 02:32:02 1570
Lakeview 02:25:17 -19.9 Dark Up 29.8 94.1 Low 02:18:35 - 02:32:00 1568
Cedarville 02:25:19 -19.8 Dark Up 30.0 93.8 Low 02:18:36 - 02:32:01 1504
Fall River/Burney 02:25:22 -18.8 Dark Up 29.1 92.7 Low 02:18:39 - 02:32:04 1485
Susanville 02:25:22 -19.2 Dark Up 29.7 92.9 Low 02:18:40 - 02:32:05 1411
Greenville 02:25:24 -18.9 Dark Up 29.5 92.5 Low 02:18:41 - 02:32:06 1392
Gimple 02:25:24 -19.0 Dark Up 29.6 92.6 Low 02:18:41 - 02:32:06 1390
Quincy 02:25:24 -18.9 Dark Up 29.5 92.4 Low 02:18:41 - 02:32:06 1373
Portola 02:25:24 -19.2 Dark Up 29.9 92.6 Low 02:18:41 - 02:32:06 1351
Reno 02:25:23 -19.6 Dark Up 30.4 92.9 Up 02:18:41 - 02:32:06 1313
Carson City 02:25:24 -19.5 Dark Up 30.4 92.7 Up 02:18:41 - 02:32:06 1279
Gardnerville 02:25:25 -19.5 Dark Up 30.5 92.6 Up 02:18:42 - 02:32:07 1254
Yerington 02:25:24 -20.0 Dark Up 30.9 93.0 Up 02:18:41 - 02:32:06 1247
Hawthorne 02:25:24 -20.2 Dark Up 31.4 93.1 Up 02:18:41 - 02:32:06 1192
Lee Vining 02:25:26 -19.7 Dark Up 31.0 92.4 Up 02:18:43 - 02:32:08 1148
Tonopah 02:25:22 -21.2 Dark Up 32.5 93.7 Up 02:18:40 - 02:32:05 1119
Niwot 02:24:53 -30.7 Dark Up 41.3 103.8 Up 02:18:11 - 02:31:36 1098
Bishop 02:25:26 -20.1 Dark Up 31.6 92.5 Up 02:18:44 - 02:32:09 1076
Beatty 02:25:24 -21.3 Dark Up 32.9 93.3 Up 02:18:41 - 02:32:06 998
Lone Pine 02:25:27 -20.2 Dark Up 31.9 92.3 Up 02:18:45 - 02:32:10 995
Indian Springs 02:25:23 -22.0 Dark Up 33.8 93.7 Up 02:18:40 - 02:32:05 944
CPSLO 02:25:35 -17.9 AT Up 29.9 90.0 Low 02:18:52 - 02:32:17 925
Henderson 02:25:23 -22.5 Dark Up 34.4 93.8 Up 02:18:40 - 02:32:05 878
Searchlight/Boulder City 02:25:24 -22.4 Dark Up 34.5 93.4 Up 02:18:41 - 02:32:06 820
Patrick 02:25:22 -23.2 Dark Up 35.4 94.1 Up 02:18:39 - 02:32:04 793
Laughlin/Bullhead City 02:25:24 -22.6 Dark Up 34.8 93.5 Up 02:18:41 - 02:32:06 783
Kingman/Dolan Springs 02:25:23 -23.0 Dark Up 35.2 93.8 Up 02:18:40 - 02:32:05 775
Wildwood 02:25:34 -19.1 Dark Up 31.6 90.4 Up 02:18:51 - 02:32:16 761
Mohave Valley 02:25:24 -22.5 Dark Up 34.8 93.3 Up 02:18:42 - 02:32:07 756
DCO 02:25:21 -23.7 Dark Up 36.0 94.3 Up 02:18:38 - 02:32:03 749
Lake Havasu City 02:25:24 -22.6 Dark Up 35.1 93.1 Up 02:18:42 - 02:32:07 712
Idyllwild 02:25:31 -20.6 Dark Up 33.1 91.3 Up 02:18:49 - 02:32:14 685
Parker 02:25:25 -22.6 Dark Up 35.1 92.9 Up 02:18:43 - 02:32:08 676
Blythe 02:25:27 -22.2 Dark Up 34.9 92.4 Up 02:18:45 - 02:32:10 629
Calipatria 02:25:30 -21.3 Dark Up 34.1 91.5 Up 02:18:47 - 02:32:12 600
Yuma 02:25:29 -22.0 Dark Up 34.9 91.7 Up 02:18:46 - 02:32:11 537

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 145451, (2018/12/24 02:22UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  4.06  41
Bellatrix      05:25:07.8 +06:20:58  1.6 13.06  34
PPM 120426     04:57:22.2 +17:09:12  6.3  1.15  36
PPM 120367     04:54:03.1 +17:01:36  7.5  0.39  37
PPM 120358     04:53:31.8 +16:49:18 10.8  0.17  37
145451         04:52:51.2 +16:45:24 13.5        37
Positions are for J2000

Event circumstances last updated at 2017/12/16 18:28:16 UT

Marc W. Buie, Southwest Research Institute

RECON