RECON: TNO occultation with 02WL21

Event between 02WL21 and star GA1140:02582604 with event index number of 1183256

Geocentric closest approach at 2023/01/13 05:14:25 UTC

J2000 position of star is 06:53:00.5 +24:21:54
Equinox of date position of star is 06:54:11.7 +24:20:24
Stellar brightness G=14.0, use SENSEUP=64
Star is 79 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=24.1

[RECON map]
TNO is 42.2 AU from the Sun and 41.2 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 962 seconds.
The 1-sigma cross-track error in the shadow position is 5567 km.
The sky-plane scale is 29892.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=154.9 km assuming a 5% albedo -- 6.2 sec chord
Diameter=63.2 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 02WL21, (2023/01/13 05:14UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:43.5 +27:58:07  1.1 12.28  68
Alhena         06:39:02.5 +16:22:40  1.9  8.73  83
37 Gem         06:56:43.6 +25:20:41  6.3  1.14  79
PPM 096722     06:56:07.0 +24:12:52  7.7  0.41  79
PPM 096705     06:55:19.4 +24:22:31  9.4  0.21  79
PPM 096675     06:54:22.9 +24:19:02 11.3  0.02  79
02WL21         06:54:24.9 +24:20:07 14.0        79
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 23.3 km RECON observability=1.0 and success probability=8.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:16:02 -46.3 Dark Down 54.8 125.0 Up 05:01:02 - 05:31:02 -2717
Summerland 05:16:03 -46.2 Dark Down 54.9 124.3 Up 05:01:03 - 05:31:03 -2744
Penticton 05:16:03 -46.3 Dark Down 55.0 124.4 Up 05:01:03 - 05:31:03 -2752
Okanagan Falls 05:16:03 -46.4 Dark Down 55.0 124.1 Up 05:01:03 - 05:31:03 -2770
Oliver 05:16:03 -46.5 Dark Down 55.2 123.9 Up 05:01:03 - 05:31:03 -2787
Anarchist Mountain Observatory 05:16:03 -46.6 Dark Down 55.4 124.0 Up 05:01:03 - 05:31:03 -2806
Oroville 05:16:04 -46.6 Dark Down 55.4 123.8 Up 05:01:04 - 05:31:04 -2813
Tonasket 05:16:03 -46.7 Dark Down 55.5 123.5 Up 05:01:03 - 05:31:03 -2836
Okanogan 05:16:04 -46.8 Dark Down 55.6 122.9 Up 05:01:04 - 05:31:04 -2868
Brewster 05:16:05 -46.8 Dark Down 55.6 122.3 Up 05:01:05 - 05:31:05 -2893
Manson/Chelan 05:16:07 -46.6 Dark Down 55.5 121.6 Up 05:01:07 - 05:31:07 -2911
Entiat 05:16:07 -46.6 Dark Down 55.6 121.3 Up 05:01:07 - 05:31:07 -2932
Wenatchee 05:16:08 -46.7 Dark Down 55.7 120.8 Up 05:01:08 - 05:31:08 -2957
Ellensburg 05:16:09 -46.7 Dark Down 55.8 120.0 Up 05:01:09 - 05:31:09 -2996
Yakima 05:16:09 -46.8 Dark Down 56.0 119.5 Up 05:01:09 - 05:31:09 -3037
Toppenish/White Swan 05:16:09 -47.0 Dark Down 56.2 119.4 Up 05:01:09 - 05:31:09 -3061
Pasco 05:16:06 -47.9 Dark Down 57.0 120.8 Up 05:01:06 - 05:31:06 -3086
Goldendale 05:16:11 -46.9 Dark Down 56.2 118.2 Up 05:01:11 - 05:31:11 -3112
PNWRO 05:16:06 -48.1 Dark Down 57.2 120.8 Up 05:01:06 - 05:31:06 -3114
George/Umatilla 05:16:07 -47.8 Dark Down 57.0 120.1 Up 05:01:07 - 05:31:07 -3118
The Dalles 05:16:12 -46.8 Dark Down 56.1 117.5 Up 05:01:12 - 05:31:12 -3131
Maupin 05:16:12 -47.0 Dark Down 56.3 117.0 Up 05:01:12 - 05:31:12 -3175
Madras/Culver 05:16:13 -47.1 Dark Down 56.5 116.2 Up 05:01:13 - 05:31:13 -3231
Sisters 05:16:15 -46.9 Dark Down 56.4 115.3 Up 05:01:15 - 05:31:15 -3260
Redmond 05:16:14 -47.2 Dark Down 56.7 115.7 Up 05:01:14 - 05:31:14 -3267
Bend 05:16:15 -47.1 Dark Down 56.7 115.2 Up 05:01:15 - 05:31:15 -3287
Oregon Observatory 05:16:15 -47.1 Dark Down 56.7 114.9 Up 05:01:15 - 05:31:15 -3304
La Pine/Gilchrist 05:16:15 -47.1 Dark Down 56.7 114.5 Up 05:01:15 - 05:31:15 -3324
North Lake 05:16:15 -47.7 Dark Down 57.3 114.6 Up 05:01:15 - 05:31:15 -3376
Chiloquin 05:16:18 -47.2 Dark Down 56.9 112.6 Up 05:01:18 - 05:31:18 -3435
Paisley 05:16:14 -48.1 Dark Down 57.7 114.2 Up 05:01:14 - 05:31:14 -3437
Klamath Falls 05:16:18 -47.3 Dark Down 57.1 112.2 Up 05:01:18 - 05:31:18 -3472
Lakeview 05:16:15 -48.3 Dark Down 58.1 113.7 Up 05:01:15 - 05:31:15 -3493
Tulelake 05:16:17 -47.6 Dark Down 57.4 112.1 Up 05:01:17 - 05:31:17 -3503
Cedarville 05:16:15 -48.7 Dark Down 58.5 112.9 Up 05:01:15 - 05:31:15 -3563
Fall River/Burney 05:16:19 -47.9 Dark Down 57.8 110.9 Up 05:01:19 - 05:31:19 -3599
Susanville 05:16:17 -48.6 Dark Down 58.5 110.7 Up 05:01:17 - 05:31:17 -3675
Greenville 05:16:18 -48.4 Dark Down 58.4 110.0 Up 05:01:18 - 05:31:18 -3700
Gimple 05:16:18 -48.5 Dark Down 58.5 110.1 Up 05:01:18 - 05:31:18 -3701
Quincy 05:16:18 -48.5 Dark Down 58.5 109.7 Up 05:01:18 - 05:31:18 -3721
Portola 05:16:17 -48.9 Dark Down 58.9 110.0 Up 05:01:17 - 05:31:17 -3740
Reno 05:16:16 -49.4 Dark Down 59.4 110.3 Up 05:01:16 - 05:31:16 -3776
Carson City 05:16:16 -49.5 Dark Down 59.6 109.7 Up 05:01:16 - 05:31:16 -3815
Niwot 05:15:30 -59.6 Dark Down 68.7 132.5 Up 05:00:30 - 05:30:30 -3822
SwRI 05:15:31 -59.6 Dark Down 68.7 132.1 Up 05:00:31 - 05:30:31 -3832
Gardnerville 05:16:16 -49.6 Dark Down 59.7 109.4 Up 05:01:16 - 05:31:16 -3841
Yerington 05:16:15 -50.0 Dark Down 60.1 110.1 Up 05:01:15 - 05:31:15 -3842
Hawthorne 05:16:13 -50.5 Dark Down 60.7 109.9 Up 05:01:13 - 05:31:13 -3898
Lee Vining 05:16:15 -50.3 Dark Down 60.5 108.4 Up 05:01:15 - 05:31:15 -3953
Tonopah 05:16:10 -51.7 Dark Down 61.8 110.6 Up 05:01:10 - 05:31:10 -3963
Bishop 05:16:14 -51.0 Dark Down 61.2 108.2 Up 05:01:14 - 05:31:14 -4025
Beatty 05:16:09 -52.3 Dark Down 62.6 109.1 Up 05:01:09 - 05:31:09 -4092
Lone Pine 05:16:13 -51.4 Dark Down 61.7 107.2 Up 05:01:13 - 05:31:13 -4110
Indian Springs 05:16:06 -53.2 Dark Down 63.5 109.7 Up 05:01:06 - 05:31:06 -4137
Henderson 05:16:04 -53.9 Dark Down 64.2 109.4 Up 05:01:04 - 05:31:04 -4202
CPSLO 05:16:23 -49.6 Dark Down 60.0 102.5 Up 05:01:23 - 05:31:23 -4219
Searchlight/Boulder City 05:16:04 -54.1 Dark Down 64.4 108.4 Up 05:01:04 - 05:31:04 -4264
Patrick 05:16:01 -54.9 Dark Down 65.3 109.5 Up 05:01:01 - 05:31:01 -4279
Laughlin/Bullhead City 05:16:04 -54.4 Dark Down 64.8 108.2 Up 05:01:04 - 05:31:04 -4300
Kingman/Dolan Springs 05:16:02 -54.8 Dark Down 65.2 108.8 Up 05:01:02 - 05:31:02 -4302
DCO 05:15:59 -55.5 Dark Down 65.9 109.7 Up 05:00:59 - 05:30:59 -4319
Mohave Valley 05:16:04 -54.5 Dark Down 64.9 107.6 Up 05:01:04 - 05:31:04 -4329
Wildwood 05:16:17 -51.4 Dark Down 61.9 102.1 Up 05:01:17 - 05:31:17 -4375
Lake Havasu City 05:16:03 -54.8 Dark Down 65.2 107.1 Up 05:01:03 - 05:31:03 -4375
Parker 05:16:04 -54.9 Dark Down 65.3 106.4 Up 05:01:04 - 05:31:04 -4414
Idyllwild 05:16:11 -53.0 Dark Down 63.5 103.2 Up 05:01:11 - 05:31:11 -4435
Blythe 05:16:05 -54.7 Dark Down 65.2 105.0 Up 05:01:05 - 05:31:05 -4468
Calipatria 05:16:08 -54.0 Dark Down 64.6 103.0 Up 05:01:08 - 05:31:08 -4513
Yuma 05:16:05 -54.8 Dark Down 65.4 103.0 Up 05:01:05 - 05:31:05 -4569

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 02WL21, (2023/01/13 05:14UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 12.28  68
Alhena         06:37:42.8 +16:23:57  1.9  8.73  83
37 Gem         06:55:18.6 +25:22:33  6.3  1.14  79
PPM 096722     06:54:42.8 +24:14:42  7.7  0.41  79
PPM 096705     06:53:55.0 +24:24:20  9.4  0.21  79
PPM 096675     06:52:58.6 +24:20:49 11.3  0.02  79
02WL21         06:53:00.5 +24:21:54 14.0        79
Positions are for J2000

Event circumstances last updated at 2019/06/08 04:36:48 UT

Marc W. Buie, Southwest Research Institute

RECON