RECON: TNO occultation with 8405

Event between (8405) Asbolus and star GA1300:03053011 with event index number of 1146967

Geocentric closest approach at 2021/11/19 10:22:33 UTC

J2000 position of star is 05:43:05.2 +41:22:26
Equinox of date position of star is 05:44:37.2 +41:22:57
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 34 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 23.8 AU from the Sun and 23.0 AU from the Earth.
The TNO is moving 22.7 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 108 seconds.
The 1-sigma cross-track error in the shadow position is 1023 km.
The sky-plane scale is 16678.0 km/arcsec.

The TNO has an absolute magnitude Hv=9.1
Diameter=91.2 km assuming a 5% albedo -- 4.0 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 8405, (2021/11/19 10:23UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:39.2 +27:58:18  1.1 28.24  56
34Bet Aur      06:01:08.1 +44:56:50  1.9  4.66  38
PPM 048445     05:48:48.8 +42:31:57  6.3  1.39  35
PPM 048385     05:44:49.9 +41:07:53  7.1  0.25  34
PPM 048390     05:45:04.5 +41:28:02 10.2  0.12  34
8405           05:44:38.1 +41:22:57 14.6        34
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 25.6 km RECON observability=1.0 and success probability=13.2%
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 10:22:14 -46.0 Dark Up 79.1 219.1 Up 10:12:44 - 10:31:44 -1538
Kelowna 10:22:14 -46.3 Dark Up 79.5 219.9 Up 10:12:44 - 10:31:44 -1582
Peachland 10:22:15 -46.5 Dark Up 79.7 219.2 Up 10:12:45 - 10:31:45 -1599
Summerland 10:22:15 -46.5 Dark Up 79.7 220.1 Up 10:12:45 - 10:31:45 -1613
Penticton 10:22:14 -46.5 Dark Up 79.7 220.7 Up 10:12:44 - 10:31:44 -1618
Oliver 10:22:14 -46.7 Dark Up 80.0 222.0 Up 10:12:44 - 10:31:44 -1655
Anarchist Mountain Observatory 10:22:13 -46.7 Dark Up 80.0 223.3 Up 10:12:43 - 10:31:43 -1669
Tonasket 10:22:12 -46.8 Dark Up 80.3 224.3 Up 10:12:42 - 10:31:42 -1704
Okanogan 10:22:13 -47.1 Dark Up 80.6 225.2 Up 10:12:43 - 10:31:43 -1742
Brewster 10:22:13 -47.3 Dark Up 80.9 225.6 Up 10:12:43 - 10:31:43 -1775
Victoria 10:22:25 -49.2 Dark Up 82.0 208.6 Up 10:12:55 - 10:31:55 -1796
Manson/Chelan 10:22:14 -47.6 Dark Up 81.2 225.2 Up 10:12:44 - 10:31:44 -1804
Wenatchee 10:22:14 -48.0 Dark Up 81.6 226.8 Up 10:12:44 - 10:31:44 -1858
Ellensburg 10:22:14 -48.3 Dark Up 82.0 228.1 Up 10:12:44 - 10:31:44 -1907
Yakima 10:22:14 -48.5 Dark Up 82.3 230.2 Up 10:12:44 - 10:31:44 -1950
Pasco 10:22:08 -47.8 Dark Up 81.7 237.3 Up 10:12:38 - 10:31:38 -1957
Toppenish/White Swan 10:22:13 -48.5 Dark Up 82.3 232.1 Up 10:12:43 - 10:31:43 -1970
PNWRO 10:22:07 -47.7 Dark Up 81.7 239.5 Up 10:12:37 - 10:31:37 -1978
Goldendale 10:22:13 -49.0 Dark Up 82.9 233.9 Up 10:12:43 - 10:31:43 -2038
The Dalles 10:22:14 -49.3 Dark Up 83.2 233.9 Up 10:12:44 - 10:31:44 -2069
Maupin 10:22:14 -49.5 Dark Up 83.4 237.3 Up 10:12:44 - 10:31:44 -2112
Dunrhomin 10:21:13 -39.9 Dark Up 72.6 281.2 Up 10:11:43 - 10:30:43 -2190
Redmond 10:22:12 -49.9 Dark Up 83.9 244.0 Up 10:12:42 - 10:31:42 -2210
Sisters 10:22:14 -50.2 Dark Up 84.2 242.3 Up 10:12:44 - 10:31:44 -2216
Bend 10:22:13 -50.1 Dark Up 84.1 245.4 Up 10:12:43 - 10:31:43 -2236
Oregon Observatory 10:22:13 -50.3 Dark Up 84.3 246.4 Up 10:12:43 - 10:31:43 -2258
La Pine/Gilchrist 10:22:13 -50.4 Dark Up 84.4 248.1 Up 10:12:43 - 10:31:43 -2281
North Lake 10:22:10 -50.2 Dark Up 84.1 254.0 Up 10:12:40 - 10:31:40 -2315
Paisley 10:22:08 -50.2 Dark Up 84.0 260.0 Up 10:12:38 - 10:31:38 -2367
Chiloquin 10:22:13 -51.1 Dark Up 85.0 258.5 Up 10:12:43 - 10:31:43 -2408
Lakeview 10:22:07 -50.2 Dark Up 83.9 265.0 Up 10:12:37 - 10:31:37 -2417
Klamath Falls 10:22:12 -51.2 Dark Up 85.0 262.5 Up 10:12:42 - 10:31:42 -2443
Cedarville 10:22:06 -50.4 Dark Up 83.8 271.3 Up 10:12:36 - 10:31:36 -2484
Fall River/Burney 10:22:09 -51.4 Dark Up 84.7 275.9 Up 10:12:39 - 10:31:39 -2562
Susanville 10:22:06 -51.1 Dark Up 84.1 281.8 Up 10:12:36 - 10:31:36 -2614
Gimple 10:22:06 -51.4 Dark Up 84.1 284.6 Up 10:12:36 - 10:31:36 -2648
Greenville 10:22:07 -51.4 Dark Up 84.2 284.7 Up 10:12:37 - 10:31:37 -2650
Quincy 10:22:06 -51.5 Dark Up 84.1 286.6 Up 10:12:36 - 10:31:36 -2671
Portola 10:22:04 -51.2 Dark Up 83.8 287.1 Up 10:12:34 - 10:31:34 -2675
Reno 10:22:02 -50.8 Dark Up 83.2 288.4 Up 10:12:32 - 10:31:32 -2688
Carson City 10:22:01 -50.9 Dark Up 83.1 291.2 Up 10:12:31 - 10:31:31 -2726
Yerington 10:21:59 -50.5 Dark Up 82.6 291.6 Up 10:12:29 - 10:31:29 -2732
Gardnerville 10:22:01 -51.0 Dark Up 83.0 292.9 Up 10:12:31 - 10:31:31 -2751
Hawthorne 10:21:56 -50.3 Dark Up 82.0 293.9 Up 10:12:26 - 10:31:26 -2769
Tonopah 10:21:51 -49.3 Dark Up 80.8 294.6 Up 10:12:21 - 10:31:21 -2784
Lee Vining 10:21:57 -50.8 Dark Up 82.1 298.5 Up 10:12:27 - 10:31:27 -2842
Bishop 10:21:54 -50.4 Dark Up 81.3 300.6 Up 10:12:24 - 10:31:24 -2888
Beatty 10:21:48 -49.3 Dark Up 80.0 300.0 Up 10:12:18 - 10:31:18 -2895
Indian Springs 10:21:43 -48.5 Dark Up 79.1 299.9 Up 10:12:13 - 10:31:13 -2900
Henderson 10:21:39 -48.1 Dark Up 78.3 301.2 Up 10:12:09 - 10:31:09 -2937
Patrick 10:21:35 -47.3 Dark Up 77.2 302.2 Up 10:12:05 - 10:31:05 -2970
Kingman/Dolan Springs 10:21:35 -47.5 Dark Up 77.2 303.2 Up 10:12:05 - 10:31:05 -2999
Laughlin/Bullhead City 10:21:37 -47.9 Dark Up 77.6 304.1 Up 10:12:07 - 10:31:07 -3017
Mohave Valley 10:21:37 -48.0 Dark Up 77.4 305.1 Up 10:12:07 - 10:31:07 -3045
Lake Havasu City 10:21:35 -47.8 Dark Up 77.0 306.1 Up 10:12:05 - 10:31:05 -3080
George/Scottsdale 10:21:25 -46.0 Dark Up 74.9 305.3 Up 10:11:55 - 10:30:55 -3085
Parker 10:21:35 -47.9 Dark Up 76.8 307.3 Up 10:12:05 - 10:31:05 -3116
CPSLO 10:22:00 -52.7 Dark Up 81.4 317.3 Up 10:12:30 - 10:31:30 -3162
Blythe 10:21:35 -48.2 Dark Up 76.7 309.5 Up 10:12:05 - 10:31:05 -3180
Idyllwild 10:21:43 -49.9 Dark Up 78.1 313.1 Up 10:12:13 - 10:31:13 -3228
Wildwood 10:21:51 -51.3 Dark Up 79.4 316.2 Up 10:12:21 - 10:31:21 -3240
Calipatria 10:21:38 -49.0 Dark Up 76.9 312.8 Up 10:12:08 - 10:31:08 -3259
Yuma 10:21:33 -48.4 Dark Up 76.1 312.5 Up 10:12:03 - 10:31:03 -3278

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 8405, (2021/11/19 10:23UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 28.24  56
34Bet Aur      05:59:31.6 +44:56:51  1.9  4.66  38
PPM 048445     05:47:14.7 +42:31:34  6.3  1.39  35
PPM 048385     05:43:17.1 +41:07:23  7.1  0.25  34
PPM 048390     05:43:31.4 +41:27:32 10.2  0.12  34
8405           05:43:05.2 +41:22:26 14.6        34
Positions are for J2000

Event circumstances last updated at 2021/08/30 01:17:09 UT

Marc W. Buie, Southwest Research Institute

RECON