RECON: TNO occultation with 84522

Event between (84522) 02TC302 and star GA1220:00457667 with event index number of 1146786

Geocentric closest approach at 2021/11/11 02:54:18 UTC

J2000 position of star is 02:41:17.3 +33:00:00
Equinox of date position of star is 02:42:29.6 +33:05:03
Stellar brightness G=11.7, use SENSEUP=8
Star is 96 degrees from the moon. Moon is 46% illuminated.
TNO apparent brightness V=20.3

[RECON map]
TNO is 43.7 AU from the Sun and 42.8 AU from the Earth.
The TNO is moving 26.0 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 170 seconds.
The 1-sigma cross-track error in the shadow position is 5250 km.
The sky-plane scale is 31012.0 km/arcsec.

The TNO has an absolute magnitude Hv=3.9
Diameter=1000.0 km assuming a 5% albedo -- 38.4 sec chord
Diameter=408.3 km assuming a 30% albedo -- 15.7 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 84522, (2021/11/11 02:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:10.7 +16:33:06  0.8 30.64 115
Algol          03:09:36.0 +41:02:18  2.1  9.59 103
17 Per         02:52:52.1 +35:08:54  5.8  2.95  98
PPM 067650     02:44:01.1 +32:59:36  7.6  0.31  96
84522          02:42:36.9 +33:05:33 11.7        96
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 17.7 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)
Victoria 02:56:18 -22.6 Dark Up 37.3 80.1 Up 02:41:38 - 03:10:59 -686
Clarence Fulton 02:56:09 -25.2 Dark Up 40.1 84.2 Up 02:41:29 - 03:10:50 -755
Kelowna 02:56:11 -25.2 Dark Up 40.0 83.8 Up 02:41:30 - 03:10:51 -771
Summerland 02:56:12 -25.0 Dark Up 39.8 83.4 Up 02:41:31 - 03:10:52 -779
Penticton 02:56:12 -25.1 Dark Up 39.9 83.5 Up 02:41:32 - 03:10:53 -788
Oliver 02:56:13 -25.1 Dark Up 39.9 83.2 Up 02:41:33 - 03:10:54 -809
Anarchist Mountain Observatory 02:56:14 -25.3 Dark Up 40.0 83.2 Up 02:41:33 - 03:10:54 -828
Tonasket 02:56:15 -25.2 Dark Up 39.9 82.9 Up 02:41:34 - 03:10:55 -844
Okanogan 02:56:16 -25.2 Dark Up 39.7 82.5 Up 02:41:36 - 03:10:57 -858
Manson/Chelan 02:56:18 -24.8 Dark Up 39.3 81.7 Up 02:41:38 - 03:10:59 -863
Brewster 02:56:17 -25.0 Dark Up 39.6 82.1 Up 02:41:37 - 03:10:58 -866
Entiat 02:56:19 -24.8 Dark Up 39.2 81.5 Up 02:41:39 - 03:11:00 -874
Wenatchee 02:56:20 -24.7 Dark Up 39.1 81.2 Up 02:41:40 - 03:11:01 -886
Ellensburg 02:56:22 -24.5 Dark Up 38.9 80.8 Up 02:41:41 - 03:11:02 -902
Yakima 02:56:23 -24.5 Dark Up 38.8 80.4 Up 02:41:43 - 03:11:04 -927
Toppenish/White Swan 02:56:24 -24.7 Dark Up 38.9 80.4 Up 02:41:43 - 03:11:04 -948
The Dalles 02:56:27 -24.1 Dark Up 38.3 79.3 Up 02:41:46 - 03:11:07 -962
Goldendale 02:56:26 -24.4 Dark Up 38.5 79.7 Up 02:41:46 - 03:11:07 -964
Maupin 02:56:28 -24.2 Dark Up 38.3 79.0 Up 02:41:48 - 03:11:09 -993
Pasco 02:56:23 -25.5 Dark Up 39.8 81.1 Up 02:41:43 - 03:11:04 -1012
Sisters 02:56:32 -23.8 Dark Up 37.7 78.1 Up 02:41:51 - 03:11:12 -1027
PNWRO 02:56:24 -25.7 Dark Up 39.9 81.0 Up 02:41:43 - 03:11:04 -1038
Redmond 02:56:32 -24.1 Dark Up 38.0 78.3 Up 02:41:51 - 03:11:12 -1047
Bend 02:56:32 -24.0 Dark Up 37.9 78.0 Up 02:41:52 - 03:11:13 -1055
Oregon Observatory 02:56:33 -23.9 Dark Up 37.8 77.8 Up 02:41:53 - 03:11:14 -1060
La Pine/Gilchrist 02:56:34 -23.9 Dark Up 37.7 77.6 Up 02:41:53 - 03:11:14 -1071
North Lake 02:56:35 -24.3 Dark Up 38.0 77.7 Up 02:41:54 - 03:11:15 -1128
Klamath Falls 02:56:39 -23.6 Dark Up 37.2 76.4 Up 02:41:58 - 03:11:19 -1154
Paisley 02:56:36 -24.6 Dark Up 38.2 77.4 Up 02:41:56 - 03:11:17 -1181
Lakeview 02:56:38 -24.7 Dark Up 38.2 77.2 Up 02:41:57 - 03:11:18 -1225
Fall River/Burney 02:56:42 -23.9 Dark Up 37.2 75.8 Up 02:42:02 - 03:11:23 -1253
Cedarville 02:56:40 -24.8 Dark Up 38.2 76.7 Up 02:41:59 - 03:11:20 -1278
Susanville 02:56:44 -24.4 Dark Up 37.6 75.7 Up 02:42:03 - 03:11:24 -1332
Greenville 02:56:45 -24.2 Dark Up 37.3 75.3 Up 02:42:04 - 03:11:25 -1337
Gimple 02:56:45 -24.2 Dark Up 37.3 75.4 Up 02:42:04 - 03:11:25 -1342
Quincy 02:56:46 -24.2 Dark Up 37.2 75.2 Up 02:42:05 - 03:11:26 -1352
Portola 02:56:46 -24.5 Dark Up 37.6 75.3 Up 02:42:05 - 03:11:26 -1384
Reno 02:56:46 -25.0 Dark Up 38.0 75.4 Up 02:42:05 - 03:11:26 -1435
Carson City 02:56:47 -25.0 Dark Up 37.9 75.2 Up 02:42:06 - 03:11:27 -1462
Gardnerville 02:56:48 -25.0 Dark Up 37.9 75.0 Up 02:42:07 - 03:11:28 -1482
Yerington 02:56:47 -25.5 Dark Up 38.3 75.3 Up 02:42:06 - 03:11:27 -1507
Hawthorne 02:56:48 -25.9 Dark Up 38.6 75.2 Up 02:42:07 - 03:11:28 -1568
Lee Vining 02:56:50 -25.5 Dark Up 38.1 74.6 Up 02:42:10 - 03:11:31 -1584
Bishop 02:56:51 -26.0 Dark Up 38.5 74.4 Up 02:42:11 - 03:11:32 -1665
Tonopah 02:56:48 -27.0 Dark Up 39.6 75.5 Up 02:42:07 - 03:11:28 -1673
CPSLO 02:56:59 -24.1 Dark Up 36.2 72.0 Up 02:42:19 - 03:11:40 -1702
Beatty 02:56:51 -27.3 Dark Up 39.6 74.8 Up 02:42:10 - 03:11:31 -1784
Indian Springs 02:56:50 -28.2 Dark Up 40.4 75.0 Up 02:42:09 - 03:11:30 -1864
Wildwood 02:57:01 -25.7 Dark Up 37.4 71.9 Up 02:42:20 - 03:11:41 -1902
Henderson 02:56:51 -28.7 Dark Up 40.8 74.8 Up 02:42:10 - 03:11:31 -1941
Searchlight/Boulder City 02:56:53 -28.8 Dark Up 40.7 74.4 Up 02:42:12 - 03:11:33 -1989
Idyllwild 02:57:00 -27.2 Dark Up 38.8 72.3 Up 02:42:19 - 03:11:40 -2030
Laughlin/Bullhead City 02:56:53 -29.1 Dark Up 40.9 74.3 Up 02:42:12 - 03:11:33 -2031
Patrick 02:56:51 -29.6 Dark Up 41.5 74.7 Up 02:42:11 - 03:11:32 -2048
Mohave Valley 02:56:54 -29.1 Dark Up 40.8 74.0 Up 02:42:13 - 03:11:34 -2053
Kingman/Dolan Springs 02:56:52 -29.5 Dark Up 41.3 74.5 Up 02:42:12 - 03:11:33 -2056
Lake Havasu City 02:56:54 -29.2 Dark Up 40.9 73.8 Up 02:42:14 - 03:11:35 -2097
Niwot 02:56:25 -36.2 Dark Up 49.1 83.4 Up 02:41:44 - 03:11:05 -2104
SwRI 02:56:25 -36.1 Dark Up 49.0 83.2 Up 02:41:45 - 03:11:06 -2108
DCO 02:56:51 -30.2 Dark Up 42.0 74.7 Up 02:42:11 - 03:11:32 -2109
Parker 02:56:55 -29.3 Dark Up 40.8 73.5 Up 02:42:15 - 03:11:36 -2127
Calipatria 02:57:00 -28.2 Dark Up 39.6 72.3 Up 02:42:19 - 03:11:40 -2142
Blythe 02:56:57 -29.0 Dark Up 40.4 73.0 Up 02:42:17 - 03:11:38 -2153
Yuma 02:57:00 -28.9 Dark Up 40.1 72.2 Up 02:42:19 - 03:11:40 -2225
George/Scottsdale 02:56:53 -31.3 Dark Up 42.6 74.0 Up 02:42:13 - 03:11:34 -2290

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 84522, (2021/11/11 02:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 30.64 115
Algol          03:08:10.1 +40:57:20  2.1  9.59 103
17 Per         02:51:30.9 +35:03:34  5.8  2.95  98
PPM 067650     02:42:41.5 +32:54:04  7.6  0.31  96
84522          02:41:17.3 +33:00:00 11.7        96
Positions are for J2000

Event circumstances last updated at 2019/11/13 21:19:00 UT

Marc W. Buie, Southwest Research Institute

RECON