RECON: TNO occultation with 03YJ179

Event between 03YJ179 and star GA1140:01928799 with event index number of 1022994

Geocentric closest approach at 2020/12/23 04:07:05 UTC

J2000 position of star is 06:09:41.9 +24:42:50
Equinox of date position of star is 06:10:52.0 +24:42:33
Stellar brightness G=15.1, use SENSEUP=128
Star is 78 degrees from the moon. Moon is 61% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 40.3 AU from the Sun and 39.3 AU from the Earth.
The TNO is moving 25.4 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 951 seconds.
The 1-sigma cross-track error in the shadow position is 4848 km.
The sky-plane scale is 28522.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=234.4 km assuming a 5% albedo -- 9.2 sec chord
Diameter=95.7 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 03YJ179, (2020/12/23 04:07UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.5 +07:24:33  0.4 17.65  73
Alnath         05:27:37.2 +28:37:24  1.6 10.44  68
3 Gem          06:11:00.5 +23:06:29  5.5  1.60  77
5 Gem          06:12:49.5 +24:24:49  6.7  0.51  78
PPM 095531     06:11:14.2 +24:36:47  9.6  0.11  78
03YJ179        06:10:59.3 +24:42:31 15.1        78
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 0.9 sigma about the mid-time.
The median site spacing is 20.4 km RECON observability=1.0 and success probability=7.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 04:09:24 -38.7 Dark Up 39.3 97.6 Up 03:54:24 - 04:24:24 -4444
Kelowna 04:09:24 -38.9 Dark Up 39.5 97.9 Up 03:54:24 - 04:24:24 -4449
Penticton 04:09:25 -38.8 Dark Up 39.4 97.5 Up 03:54:25 - 04:24:25 -4476
Okanagan Falls 04:09:26 -38.8 Dark Up 39.4 97.3 Up 03:54:26 - 04:24:26 -4492
Oliver 04:09:26 -38.9 Dark Up 39.5 97.2 Up 03:54:26 - 04:24:26 -4507
Anarchist Mountain Observatory 04:09:26 -39.0 Dark Up 39.6 97.2 Up 03:54:26 - 04:24:26 -4526
Oroville 04:09:26 -39.0 Dark Up 39.6 97.1 Up 03:54:26 - 04:24:26 -4531
Tonasket 04:09:27 -39.0 Dark Up 39.6 96.9 Up 03:54:27 - 04:24:27 -4551
Okanogan 04:09:28 -39.0 Dark Up 39.6 96.5 Up 03:54:28 - 04:24:28 -4577
Brewster 04:09:29 -38.9 Dark Up 39.5 96.1 Up 03:54:29 - 04:24:29 -4596
Manson/Chelan 04:09:30 -38.7 Dark Up 39.2 95.7 Up 03:54:30 - 04:24:30 -4604
Entiat 04:09:30 -38.7 Dark Up 39.2 95.4 Up 03:54:30 - 04:24:30 -4622
Wenatchee 04:09:32 -38.6 Dark Up 39.2 95.1 Up 03:54:32 - 04:24:32 -4642
Ellensburg 04:09:33 -38.5 Dark Up 39.1 94.6 Up 03:54:33 - 04:24:33 -4672
Yakima 04:09:34 -38.6 Dark Up 39.1 94.3 Up 03:54:34 - 04:24:34 -4708
Toppenish/White Swan 04:09:34 -38.7 Dark Up 39.2 94.3 Up 03:54:34 - 04:24:34 -4732
Goldendale 04:09:36 -38.5 Dark Up 39.0 93.5 Up 03:54:36 - 04:24:36 -4770
Pasco 04:09:32 -39.6 Dark Up 40.1 95.1 Up 03:54:32 - 04:24:32 -4776
The Dalles 04:09:38 -38.2 Dark Up 38.7 93.0 Up 03:54:38 - 04:24:38 -4780
George/Umatilla 04:09:34 -39.5 Dark Up 40.0 94.7 Up 03:54:34 - 04:24:34 -4800
PNWRO 04:09:33 -39.8 Dark Up 40.3 95.1 Up 03:54:33 - 04:24:33 -4804
Maupin 04:09:39 -38.3 Dark Up 38.8 92.8 Up 03:54:39 - 04:24:39 -4820
Madras/Culver 04:09:40 -38.4 Dark Up 38.8 92.3 Up 03:54:40 - 04:24:40 -4868
Sisters 04:09:42 -38.1 Dark Up 38.5 91.7 Up 03:54:42 - 04:24:42 -4886
Redmond 04:09:41 -38.4 Dark Up 38.8 92.0 Up 03:54:41 - 04:24:41 -4899
Bend 04:09:42 -38.3 Dark Up 38.7 91.7 Up 03:54:42 - 04:24:42 -4915
Oregon Observatory 04:09:43 -38.2 Dark Up 38.6 91.5 Up 03:54:43 - 04:24:43 -4927
La Pine/Gilchrist 04:09:43 -38.2 Dark Up 38.6 91.3 Up 03:54:43 - 04:24:43 -4944
North Lake 04:09:43 -38.6 Dark Up 39.0 91.4 Up 03:54:43 - 04:24:43 -5000
Chiloquin 04:09:47 -38.0 Dark Up 38.4 90.2 Up 03:54:47 - 04:24:47 -5035
Paisley 04:09:44 -38.9 Dark Up 39.3 91.2 Up 03:54:44 - 04:24:44 -5061
Klamath Falls 04:09:47 -38.0 Dark Up 38.4 90.0 Up 03:54:47 - 04:24:47 -5069
Tulelake 04:09:47 -38.3 Dark Up 38.6 89.9 Up 03:54:47 - 04:24:47 -5103
Lakeview 04:09:44 -39.1 Dark Up 39.5 90.9 Up 03:54:44 - 04:24:44 -5114
Cedarville 04:09:46 -39.2 Dark Up 39.6 90.5 Up 03:54:46 - 04:24:46 -5180
Fall River/Burney 04:09:49 -38.3 Dark Up 38.7 89.3 Up 03:54:49 - 04:24:49 -5189
Susanville 04:09:49 -38.9 Dark Up 39.3 89.2 Up 03:54:49 - 04:24:49 -5270
Greenville 04:09:51 -38.7 Dark Up 39.0 88.8 Up 03:54:51 - 04:24:51 -5287
Gimple 04:09:50 -38.8 Dark Up 39.1 88.9 Up 03:54:50 - 04:24:50 -5290
Quincy 04:09:51 -38.7 Dark Up 39.0 88.7 Up 03:54:51 - 04:24:51 -5306
Portola 04:09:51 -39.1 Dark Up 39.4 88.9 Up 03:54:51 - 04:24:51 -5332
Reno 04:09:50 -39.6 Dark Up 39.9 89.1 Up 03:54:50 - 04:24:50 -5377
Carson City 04:09:50 -39.6 Dark Up 39.9 88.8 Up 03:54:50 - 04:24:50 -5412
Gardnerville 04:09:51 -39.6 Dark Up 39.9 88.6 Up 03:54:51 - 04:24:51 -5436
Yerington 04:09:50 -40.1 Dark Up 40.4 89.0 Up 03:54:50 - 04:24:50 -5449
Hawthorne 04:09:50 -40.5 Dark Up 40.8 88.9 Up 03:54:50 - 04:24:50 -5509
Lee Vining 04:09:52 -40.1 Dark Up 40.4 88.2 Up 03:54:52 - 04:24:52 -5549
Tonopah 04:09:48 -41.6 Dark Up 41.9 89.4 Up 03:54:48 - 04:24:48 -5595
Bishop 04:09:52 -40.7 Dark Up 41.0 88.1 Up 03:54:52 - 04:24:52 -5628
Niwot 04:09:18 -50.6 Dark Up 51.0 99.8 Up 03:54:18 - 04:24:18 -5706
Lone Pine 04:09:53 -41.0 Dark Up 41.2 87.6 Up 03:54:53 - 04:24:53 -5712
Beatty 04:09:49 -42.0 Dark Up 42.2 88.6 Up 03:54:49 - 04:24:49 -5721
CPSLO 04:10:00 -38.8 Dark Up 39.0 85.1 Up 03:55:00 - 04:25:00 -5760
Indian Springs 04:09:48 -42.9 Dark Up 43.1 88.9 Up 03:54:48 - 04:24:48 -5785
Henderson 04:09:48 -43.4 Dark Up 43.6 88.8 Up 03:54:48 - 04:24:48 -5858
Searchlight/Boulder City 04:09:49 -43.5 Dark Up 43.7 88.3 Up 03:54:49 - 04:24:49 -5917
Wildwood 04:09:59 -40.5 Dark Up 40.6 85.2 Up 03:54:59 - 04:24:59 -5943
Patrick 04:09:46 -44.3 Dark Up 44.5 88.8 Up 03:54:46 - 04:24:46 -5952
Laughlin/Bullhead City 04:09:49 -43.8 Dark Up 44.0 88.2 Up 03:54:49 - 04:24:49 -5956
Kingman/Dolan Springs 04:09:48 -44.2 Dark Up 44.4 88.5 Up 03:54:48 - 04:24:48 -5969
Mohave Valley 04:09:49 -43.8 Dark Up 44.0 88.0 Up 03:54:49 - 04:24:49 -5984
DCO 04:09:45 -44.9 Dark Up 45.1 88.9 Up 03:54:45 - 04:24:45 -6003
Lake Havasu City 04:09:49 -44.0 Dark Up 44.1 87.7 Up 03:54:49 - 04:24:49 -6031
Idyllwild 04:09:55 -42.0 Dark Up 42.1 85.8 Up 03:54:55 - 04:24:55 -6036
Parker 04:09:50 -44.0 Dark Up 44.2 87.4 Up 03:54:50 - 04:24:50 -6067
Blythe 04:09:51 -43.8 Dark Up 43.9 86.7 Up 03:54:51 - 04:24:51 -6111
Calipatria 04:09:55 -43.0 Dark Up 43.1 85.8 Up 03:54:55 - 04:24:55 -6133
Yuma 04:09:53 -43.7 Dark Up 43.8 85.8 Up 03:54:53 - 04:24:53 -6203

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 03YJ179, (2020/12/23 04:07UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.65  73
Alnath         05:26:17.5 +28:36:23  1.6 10.44  68
3 Gem          06:09:44.0 +23:06:48  5.5  1.60  77
5 Gem          06:11:32.3 +24:25:12  6.7  0.51  78
PPM 095531     06:09:56.9 +24:37:07  9.6  0.11  78
03YJ179        06:09:41.9 +24:42:50 15.1        78
Positions are for J2000

Event circumstances last updated at 2019/01/01 21:49:09 UT

Marc W. Buie, Southwest Research Institute

RECON