RECON: TNO occultation with 84922

Event between (84922) 03VS2 and star GA1220:01949048 with event index number of 1007509

Geocentric closest approach at 2020/11/15 08:37:01 UTC

J2000 position of star is 05:36:49.8 +32:53:14
Equinox of date position of star is 05:38:11.1 +32:53:55
Stellar brightness G=16.0, use SENSEUP=128
Star is 148 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=25.7

[RECON map]
TNO is 36.7 AU from the Sun and 35.9 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is 1469 km.
The sky-plane scale is 26035.7 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=871.0 km assuming a 5% albedo -- 2.9 sec chord
Diameter=355.6 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 84922, (2020/11/15 08:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.3 +16:32:59  0.8 21.38 165
Alnath         05:27:36.8 +28:37:23  1.6  4.84 152
PPM 070534     05:34:49.4 +32:48:50  6.5  0.71 149
PPM 070568     05:36:36.4 +32:45:41  8.5  0.36 149
PPM 070571     05:36:42.6 +32:55:11  9.5  0.31 149
84922          05:38:12.0 +32:53:55 16.0       148
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 25.8 km RECON observability=1.0 and success probability=10.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 08:38:10 -56.4 Dark Down 67.7 133.8 Up 08:24:14 - 08:52:06 -2450
Kelowna 08:38:11 -56.8 Dark Down 67.9 132.8 Up 08:24:15 - 08:52:07 -2490
Peachland 08:38:11 -57.0 Dark Down 67.8 132.1 Up 08:24:15 - 08:52:07 -2498
Summerland 08:38:11 -57.1 Dark Down 67.9 132.0 Up 08:24:15 - 08:52:07 -2515
Penticton 08:38:11 -57.2 Dark Down 68.0 132.0 Up 08:24:15 - 08:52:07 -2523
Oliver 08:38:11 -57.5 Dark Down 68.3 131.4 Up 08:24:15 - 08:52:07 -2560
Anarchist Mountain Observatory 08:38:11 -57.6 Dark Down 68.5 131.4 Up 08:24:15 - 08:52:07 -2580
Victoria 08:38:25 -59.0 Dark Down 66.7 123.6 Up 08:24:29 - 08:52:21 -2583
Tonasket 08:38:11 -57.9 Dark Down 68.6 130.7 Up 08:24:15 - 08:52:07 -2612
Okanogan 08:38:12 -58.2 Dark Down 68.8 129.8 Up 08:24:16 - 08:52:08 -2646
Brewster 08:38:14 -58.5 Dark Down 68.9 128.9 Up 08:24:18 - 08:52:10 -2672
Manson/Chelan 08:38:15 -58.8 Dark Down 68.8 127.8 Up 08:24:19 - 08:52:11 -2690
Entiat 08:38:16 -59.0 Dark Down 68.9 127.2 Up 08:24:20 - 08:52:12 -2712
Wenatchee 08:38:16 -59.3 Dark Down 69.0 126.5 Up 08:24:20 - 08:52:12 -2738
Ellensburg 08:38:17 -59.7 Dark Down 69.1 125.2 Up 08:24:21 - 08:52:13 -2779
Yakima 08:38:18 -60.1 Dark Down 69.3 124.3 Up 08:24:22 - 08:52:14 -2822
Toppenish/White Swan 08:38:18 -60.3 Dark Down 69.6 124.2 Up 08:24:22 - 08:52:14 -2847
Pasco 08:38:13 -60.0 Dark Down 70.3 126.2 Up 08:24:17 - 08:52:09 -2875
Goldendale 08:38:20 -60.9 Dark Down 69.6 122.2 Up 08:24:24 - 08:52:16 -2901
PNWRO 08:38:13 -60.1 Dark Down 70.6 126.0 Up 08:24:17 - 08:52:09 -2904
The Dalles 08:38:21 -61.2 Dark Down 69.5 121.1 Up 08:24:25 - 08:52:17 -2921
Maupin 08:38:21 -61.5 Dark Down 69.8 120.3 Up 08:24:25 - 08:52:17 -2966
Sisters 08:38:24 -62.5 Dark Down 69.9 117.4 Up 08:24:28 - 08:52:20 -3054
Redmond 08:38:22 -62.4 Dark Down 70.2 118.0 Up 08:24:26 - 08:52:18 -3062
Bend 08:38:24 -62.6 Dark Down 70.2 117.2 Up 08:24:28 - 08:52:20 -3083
Oregon Observatory 08:38:24 -62.8 Dark Down 70.2 116.6 Up 08:24:28 - 08:52:20 -3100
La Pine/Gilchrist 08:38:25 -63.0 Dark Down 70.2 116.0 Up 08:24:29 - 08:52:21 -3121
North Lake 08:38:22 -63.2 Dark Down 70.8 115.8 Up 08:24:26 - 08:52:18 -3176
Paisley 08:38:22 -63.6 Dark Down 71.3 114.9 Up 08:24:26 - 08:52:18 -3240
Klamath Falls 08:38:27 -64.4 Dark Down 70.7 111.8 Up 08:24:31 - 08:52:23 -3274
Lakeview 08:38:22 -64.0 Dark Down 71.6 113.8 Up 08:24:26 - 08:52:18 -3297
Cedarville 08:38:22 -64.5 Dark Down 72.0 112.3 Up 08:24:26 - 08:52:18 -3370
Fall River/Burney 08:38:27 -65.3 Dark Down 71.3 109.2 Up 08:24:31 - 08:52:23 -3406
Susanville 08:38:25 -65.6 Dark Down 72.1 108.4 Up 08:24:29 - 08:52:21 -3485
Greenville 08:38:27 -65.9 Dark Down 71.9 107.2 Up 08:24:31 - 08:52:23 -3511
Gimple 08:38:26 -65.9 Dark Down 72.0 107.3 Up 08:24:30 - 08:52:22 -3512
Quincy 08:38:27 -66.1 Dark Down 72.0 106.6 Up 08:24:31 - 08:52:23 -3533
Portola 08:38:25 -66.0 Dark Down 72.4 106.8 Up 08:24:29 - 08:52:21 -3553
Reno 08:38:23 -66.0 Dark Down 72.9 106.9 Up 08:24:27 - 08:52:19 -3590
Carson City 08:38:22 -66.3 Dark Down 73.1 105.8 Up 08:24:26 - 08:52:18 -3629
Niwot 08:37:25 -57.7 Dark Down 81.7 148.7 Up 08:23:29 - 08:51:21 -3631
SwRI 08:37:25 -57.8 Dark Down 81.7 147.9 Up 08:23:29 - 08:51:21 -3643
Gardnerville 08:38:23 -66.5 Dark Down 73.2 105.1 Up 08:24:27 - 08:52:19 -3657
Yerington 08:38:20 -66.2 Dark Down 73.6 106.0 Up 08:24:24 - 08:52:16 -3659
Hawthorne 08:38:19 -66.3 Dark Down 74.1 105.2 Up 08:24:23 - 08:52:15 -3716
Lee Vining 08:38:22 -67.0 Dark Down 73.9 102.6 Up 08:24:26 - 08:52:18 -3771
Tonopah 08:38:14 -66.0 Dark Down 75.3 105.4 Up 08:24:18 - 08:52:10 -3783
Bishop 08:38:19 -67.1 Dark Down 74.5 101.4 Up 08:24:23 - 08:52:15 -3846
Beatty 08:38:13 -66.6 Dark Down 75.9 101.6 Up 08:24:17 - 08:52:09 -3915
Indian Springs 08:38:08 -66.3 Dark Down 76.8 101.7 Up 08:24:12 - 08:52:04 -3962
Henderson 08:38:06 -66.2 Dark Down 77.4 100.2 Up 08:24:10 - 08:52:02 -4028
CPSLO 08:38:30 -69.8 Dark Down 73.0 92.3 Up 08:24:34 - 08:52:26 -4042
Searchlight/Boulder City 08:38:06 -66.6 Dark Down 77.6 97.8 Up 08:24:10 - 08:52:02 -4092
Patrick 08:38:01 -65.9 Dark Down 78.4 98.7 Up 08:24:05 - 08:51:57 -4107
Laughlin/Bullhead City 08:38:05 -66.5 Dark Down 77.9 96.8 Up 08:24:09 - 08:52:01 -4128
Kingman/Dolan Springs 08:38:03 -66.2 Dark Down 78.3 97.4 Up 08:24:07 - 08:51:59 -4130
DCO 08:37:59 -65.7 Dark Down 79.0 98.0 Up 08:24:03 - 08:51:55 -4147
Mohave Valley 08:38:05 -66.7 Dark Down 77.9 95.5 Up 08:24:09 - 08:52:01 -4158
Wildwood 08:38:22 -69.7 Dark Down 74.7 89.4 Up 08:24:26 - 08:52:18 -4202
Lake Havasu City 08:38:04 -66.8 Dark Down 78.2 93.8 Up 08:24:08 - 08:52:00 -4204
Parker 08:38:04 -67.0 Dark Down 78.2 92.2 Up 08:24:08 - 08:52:00 -4243
Idyllwild 08:38:15 -68.8 Dark Down 76.2 89.0 Up 08:24:19 - 08:52:11 -4264
Blythe 08:38:06 -67.5 Dark Down 78.0 89.5 Up 08:24:10 - 08:52:02 -4299
George/Scottsdale 08:37:54 -65.6 Dark Down 80.2 91.6 Up 08:23:58 - 08:51:50 -4310
Calipatria 08:38:10 -68.4 Dark Down 77.2 86.9 Up 08:24:14 - 08:52:06 -4344
Yuma 08:38:06 -68.1 Dark Down 77.9 85.2 Up 08:24:10 - 08:52:02 -4400

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 84922, (2020/11/15 08:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 21.38 165
Alnath         05:26:17.5 +28:36:23  1.6  4.84 152
PPM 070534     05:33:27.4 +32:48:03  6.5  0.71 149
PPM 070568     05:35:14.4 +32:44:57  8.5  0.36 149
PPM 070571     05:35:20.5 +32:54:27  9.5  0.31 149
84922          05:36:49.8 +32:53:14 16.0       148
Positions are for J2000

Event circumstances last updated at 2020/08/28 21:52:11 UT

Marc W. Buie, Southwest Research Institute

RECON