RECON: TNO occultation with 42301

Event between (42301) 01UR163 and star GA1040:00213248 with event index number of 171893

Geocentric closest approach at 2018/12/24 01:37:54 UTC

J2000 position of star is 02:14:10.5 +14:16:32
Equinox of date position of star is 02:15:10.7 +14:21:39
Stellar brightness G=13.1, use SENSEUP=32
Star is 74 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 53.0 AU from the Sun and 52.5 AU from the Earth.
The TNO is moving 13.1 km/sec on the sky relative to the star, or, 1.2 arcsec/hr.
The 1-sigma error in the time of the event is 196 seconds.
The 1-sigma cross-track error in the shadow position is 2258 km.
The sky-plane scale is 38062.2 km/arcsec.

The TNO has an absolute magnitude Hv=4.1
Diameter=912.0 km assuming a 5% albedo -- 69.8 sec chord
Diameter=372.3 km assuming a 30% albedo -- 28.5 sec chord
Dynamical classification is 9:4EEEEE
 
 
 
 
 
 

Star training set for 42301, (2018/12/24 01:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:45  0.8 34.20  41
6Bet Ari       01:55:41.5 +20:54:00  2.6  8.02  77
19 Ari         02:14:05.6 +15:22:05  5.7  1.04  74
PPM 118034     02:13:44.5 +14:00:24  8.0  0.50  75
PPM 118038     02:14:03.7 +14:19:46  9.5  0.28  75
42301          02:15:12.5 +14:21:48 13.1        74
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 4.6 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 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)
Penticton 01:39:12 -14.8 AT Up 44.3 127.7 Up 01:24:12 - 01:54:12 9359
Oroville 01:39:14 -14.6 AT Up 44.7 127.4 Up 01:24:14 - 01:54:14 9317
Tonasket 01:39:17 -14.6 AT Up 44.8 127.2 Up 01:24:17 - 01:54:17 9302
Okanogan 01:39:18 -14.4 AT Up 45.0 126.8 Up 01:24:18 - 01:54:18 9284
Brewster 01:39:21 -14.2 AT Up 45.0 126.4 Up 01:24:21 - 01:54:21 9272
Manson/Chelan 01:39:24 -13.9 AT Up 45.0 125.8 Up 01:24:24 - 01:54:24 9270
Entiat 01:39:26 -13.8 AT Up 45.1 125.6 Up 01:24:26 - 01:54:26 9258
Wenatchee 01:39:27 -13.6 AT Up 45.2 125.2 Up 01:24:27 - 01:54:27 9244
Ellensburg 01:39:31 -13.3 AT Down 45.3 124.7 Up 01:24:31 - 01:54:31 9223
Yakima 01:39:33 -13.2 AT Down 45.5 124.3 Up 01:24:33 - 01:54:33 9196
Toppenish/White Swan 01:39:34 -13.2 AT Down 45.7 124.3 Up 01:24:34 - 01:54:34 9176
Goldendale 01:39:39 -12.8 AT Down 45.8 123.4 Up 01:24:39 - 01:54:39 9152
The Dalles 01:39:44 -12.5 AT Down 45.7 122.8 Up 01:24:44 - 01:54:44 9149
Pasco 01:39:30 -14.0 AT Up 46.5 125.7 Up 01:24:30 - 01:54:30 9127
Maupin 01:39:43 -12.4 AT Down 46.0 122.6 Up 01:24:43 - 01:54:43 9116
George/Umatilla 01:39:32 -13.8 AT Down 46.6 125.1 Up 01:24:32 - 01:54:32 9111
PNWRO 01:39:30 -14.1 AT Up 46.8 125.7 Up 01:24:30 - 01:54:30 9102
Madras/Culver 01:39:47 -12.2 AT Down 46.3 122.1 Up 01:24:47 - 01:54:47 9079
Sisters 01:39:51 -11.8 CT Down 46.2 121.3 Up 01:24:51 - 01:54:51 9071
Redmond 01:39:50 -12.0 AT Down 46.4 121.7 Up 01:24:50 - 01:54:50 9056
Bend 01:39:52 -11.9 CT Down 46.5 121.4 Up 01:24:52 - 01:54:52 9045
Oregon Observatory 01:39:53 -11.7 CT Down 46.5 121.1 Up 01:24:53 - 01:54:53 9038
La Pine/Gilchrist 01:39:54 -11.6 CT Down 46.6 120.8 Up 01:24:54 - 01:54:54 9025
North Lake 01:39:55 -11.8 CT Down 47.2 121.1 Up 01:24:55 - 01:54:55 8974
Chiloquin 01:40:03 -11.0 CT Down 46.9 119.5 Up 01:25:03 - 01:55:03 8958
Klamath Falls 01:40:05 -10.9 CT Down 47.1 119.2 Up 01:25:05 - 01:55:05 8930
Paisley 01:39:56 -11.9 CT Down 47.7 121.0 Up 01:24:56 - 01:54:56 8922
Tulelake 01:40:04 -11.0 CT Down 47.5 119.3 Up 01:25:04 - 01:55:04 8900
Lakeview 01:39:59 -11.9 CT Down 48.1 120.7 Up 01:24:59 - 01:54:59 8878
Fall River/Burney 01:40:09 -10.7 CT Down 48.0 118.5 Up 01:25:09 - 01:55:09 8830
Cedarville 01:40:00 -11.7 CT Down 48.5 120.3 Up 01:25:00 - 01:55:00 8823
Susanville 01:40:09 -11.0 CT Down 48.8 118.7 Up 01:25:09 - 01:55:09 8757
Greenville 01:40:13 -10.7 CT Down 48.7 118.1 Up 01:25:13 - 01:55:13 8746
Gimple 01:40:12 -10.8 CT Down 48.8 118.2 Up 01:25:12 - 01:55:12 8743
Quincy 01:40:13 -10.7 CT Down 48.8 117.9 Up 01:25:13 - 01:55:13 8731
Portola 01:40:12 -11.0 CT Down 49.2 118.3 Up 01:25:12 - 01:55:12 8704
Reno 01:40:11 -11.3 CT Down 49.8 118.7 Up 01:25:11 - 01:55:11 8661
Carson City 01:40:12 -11.2 CT Down 49.9 118.4 Up 01:25:12 - 01:55:12 8632
Gardnerville 01:40:13 -11.2 CT Down 50.1 118.2 Up 01:25:13 - 01:55:13 8612
Yerington 01:40:12 -11.6 CT Down 50.5 118.9 Up 01:25:12 - 01:55:12 8594
Hawthorne 01:40:11 -11.8 CT Down 51.1 118.9 Up 01:25:11 - 01:55:11 8539
Lee Vining 01:40:16 -11.3 CT Down 51.0 117.8 Up 01:25:16 - 01:55:16 8512
Tonopah 01:40:07 -12.7 AT Down 52.2 120.0 Up 01:25:07 - 01:55:07 8450
Bishop 01:40:15 -11.6 CT Down 51.8 117.9 Up 01:25:15 - 01:55:15 8438
Lone Pine 01:40:18 -11.6 CT Down 52.4 117.4 Up 01:25:18 - 01:55:18 8364
CPSLO 01:40:37 -9.2 CT Down 51.1 113.4 Up 01:25:37 - 01:55:37 8356
Beatty 01:40:10 -12.6 AT Down 53.1 119.2 Up 01:25:10 - 01:55:10 8340
Indian Springs 01:40:06 -13.3 AT Down 54.0 120.0 Up 01:25:06 - 01:55:06 8273
Henderson 01:40:06 -13.7 AT Down 54.8 120.1 Up 01:25:06 - 01:55:06 8203
Niwot 01:38:55 -22.0 Dark Up 58.1 137.9 Up 01:23:55 - 01:53:55 8188
Wildwood 01:40:34 -10.3 CT Down 53.1 114.0 Up 01:25:34 - 01:55:34 8179
Searchlight/Boulder City 01:40:08 -13.6 AT Down 55.1 119.5 Up 01:25:08 - 01:55:08 8153
Laughlin/Bullhead City 01:40:07 -13.7 AT Down 55.5 119.5 Up 01:25:07 - 01:55:07 8115
Patrick 01:40:03 -14.3 AT Down 55.9 120.7 Up 01:25:03 - 01:55:03 8109
Kingman/Dolan Springs 01:40:04 -14.1 AT Down 55.9 120.2 Up 01:25:04 - 01:55:04 8097
Mohave Valley 01:40:09 -13.6 AT Down 55.7 119.2 Up 01:25:09 - 01:55:09 8092
Idyllwild 01:40:26 -11.6 CT Down 54.7 115.4 Up 01:25:26 - 01:55:26 8076
DCO 01:40:00 -14.8 AT Down 56.5 121.1 Up 01:25:00 - 01:55:00 8056
Lake Havasu City 01:40:10 -13.7 AT Down 56.0 119.0 Up 01:25:10 - 01:55:10 8049
Parker 01:40:11 -13.6 AT Down 56.2 118.6 Up 01:25:11 - 01:55:11 8018
Blythe 01:40:16 -13.2 AT Down 56.3 117.6 Up 01:25:16 - 01:55:16 7984
Calipatria 01:40:23 -12.3 AT Down 55.8 115.9 Up 01:25:23 - 01:55:23 7978
Yuma 01:40:21 -12.9 AT Down 56.7 116.3 Up 01:25:21 - 01:55:21 7906

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 42301, (2018/12/24 01:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 34.20  41
6Bet Ari       01:54:38.5 +20:48:27  2.6  8.02  77
19 Ari         02:13:03.4 +15:16:47  5.7  1.04  74
PPM 118034     02:12:42.6 +13:55:06  8.0  0.50  75
PPM 118038     02:13:01.7 +14:14:28  9.5  0.28  75
42301          02:14:10.5 +14:16:32 13.1        74
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:40:44 UT

Marc W. Buie, Southwest Research Institute

RECON