RECON: TNO occultation with 523965

Event between (523965) 98XY95 and star GA1160:02968659 with event index number of 1591216

Geocentric closest approach at 2020/12/19 10:44:15 UTC

J2000 position of star is 08:00:10.4 +27:03:19
Equinox of date position of star is 08:01:21.8 +27:00:02
Stellar brightness G=14.1, use SENSEUP=64
Star is 148 degrees from the moon. Moon is 26% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 38.0 AU from the Sun and 37.1 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 480 seconds.
The 1-sigma cross-track error in the shadow position is 4346 km.
The sky-plane scale is 26937.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 15.1 sec chord
Diameter=129.1 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523965, (2020/12/19 10:44UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:35.8 +27:58:26  1.1  3.44 144
PPM 098327     08:06:53.9 +27:28:09  6.1  1.30 149
PPM 098273     08:04:34.8 +26:12:27  7.0  1.05 149
PPM 098247     08:03:27.6 +26:34:41  8.9  0.61 148
PPM 098207     08:01:20.3 +26:55:50 10.2  0.07 148
523965         08:01:27.2 +26:59:47 14.1       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 1.9 sigma about the mid-time.
The median site spacing is 21.5 km RECON observability=1.0 and success probability=9.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:44:18 -47.8 Dark Down 65.9 202.6 Up 10:29:18 - 10:59:18 -443
Summerland 10:44:18 -48.1 Dark Down 66.2 202.2 Up 10:29:18 - 10:59:18 -478
Penticton 10:44:18 -48.0 Dark Down 66.2 202.5 Up 10:29:18 - 10:59:18 -481
Okanagan Falls 10:44:17 -48.1 Dark Down 66.4 202.6 Up 10:29:17 - 10:59:17 -500
Oliver 10:44:17 -48.2 Dark Down 66.6 202.8 Up 10:29:17 - 10:59:17 -514
Anarchist Mountain Observatory 10:44:16 -48.1 Dark Down 66.7 203.4 Up 10:29:16 - 10:59:16 -526
Oroville 10:44:16 -48.2 Dark Down 66.8 203.3 Up 10:29:16 - 10:59:16 -535
Tonasket 10:44:15 -48.3 Dark Down 67.0 203.5 Up 10:29:15 - 10:59:15 -557
Okanogan 10:44:15 -48.5 Dark Down 67.3 203.5 Up 10:29:15 - 10:59:15 -592
Brewster 10:44:15 -48.7 Dark Down 67.6 203.3 Up 10:29:15 - 10:59:15 -623
Manson/Chelan 10:44:16 -49.0 Dark Down 67.9 202.7 Up 10:29:16 - 10:59:16 -653
Wenatchee 10:44:16 -49.3 Dark Down 68.4 202.7 Up 10:29:16 - 10:59:16 -703
Ellensburg 10:44:16 -49.6 Dark Down 68.8 202.6 Up 10:29:16 - 10:59:16 -748
Pasco 10:44:09 -49.0 Dark Down 69.1 206.7 Up 10:29:09 - 10:59:09 -782
Yakima 10:44:15 -49.8 Dark Down 69.2 203.0 Up 10:29:15 - 10:59:15 -788
PNWRO 10:44:08 -48.9 Dark Down 69.3 207.6 Up 10:29:08 - 10:59:08 -799
Toppenish/White Swan 10:44:14 -49.7 Dark Down 69.4 203.6 Up 10:29:14 - 10:59:14 -804
George/Umatilla 10:44:10 -49.2 Dark Down 69.5 206.6 Up 10:29:10 - 10:59:10 -820
Goldendale 10:44:15 -50.2 Dark Down 70.0 203.2 Up 10:29:15 - 10:59:15 -869
The Dalles 10:44:15 -50.5 Dark Down 70.3 202.5 Up 10:29:15 - 10:59:15 -901
SwRI 10:43:08 -40.3 Dark Down 66.3 244.2 Up 10:28:08 - 10:58:08 -928
Maupin 10:44:14 -50.6 Dark Down 70.7 203.2 Up 10:29:14 - 10:59:14 -939
Madras/Culver 10:44:13 -50.8 Dark Down 71.2 203.7 Up 10:29:13 - 10:59:13 -994
Redmond 10:44:13 -51.0 Dark Down 71.5 204.0 Up 10:29:13 - 10:59:13 -1030
Sisters 10:44:14 -51.2 Dark Down 71.6 202.9 Up 10:29:14 - 10:59:14 -1039
Bend 10:44:13 -51.1 Dark Down 71.8 203.9 Up 10:29:13 - 10:59:13 -1055
Oregon Observatory 10:44:13 -51.3 Dark Down 72.0 203.8 Up 10:29:13 - 10:59:13 -1076
La Pine/Gilchrist 10:44:13 -51.4 Dark Down 72.2 203.9 Up 10:29:13 - 10:59:13 -1098
North Lake 10:44:10 -51.1 Dark Down 72.4 206.1 Up 10:29:10 - 10:59:10 -1124
Paisley 10:44:07 -51.0 Dark Down 72.8 207.8 Up 10:29:07 - 10:59:07 -1169
Lakeview 10:44:06 -51.0 Dark Down 73.1 209.1 Up 10:29:06 - 10:59:06 -1214
Chiloquin 10:44:12 -52.0 Dark Down 73.3 204.3 Up 10:29:12 - 10:59:12 -1218
Klamath Falls 10:44:11 -52.0 Dark Down 73.6 205.0 Up 10:29:11 - 10:59:11 -1250
Tulelake 10:44:09 -51.9 Dark Down 73.7 206.3 Up 10:29:09 - 10:59:09 -1269
Cedarville 10:44:04 -51.1 Dark Down 73.6 210.7 Up 10:29:04 - 10:59:04 -1274
Fall River/Burney 10:44:08 -52.1 Dark Down 74.5 208.0 Up 10:29:08 - 10:59:08 -1357
Susanville 10:44:03 -51.7 Dark Down 74.8 211.3 Up 10:29:03 - 10:59:03 -1399
Gimple 10:44:04 -51.9 Dark Down 75.1 211.2 Up 10:29:04 - 10:59:04 -1433
Greenville 10:44:04 -52.0 Dark Down 75.1 210.9 Up 10:29:04 - 10:59:04 -1435
Portola 10:44:02 -51.7 Dark Down 75.2 213.1 Up 10:29:02 - 10:59:02 -1454
Quincy 10:44:04 -52.0 Dark Down 75.3 211.3 Up 10:29:04 - 10:59:04 -1456
Reno 10:43:58 -51.3 Dark Down 75.2 215.6 Up 10:28:58 - 10:58:58 -1462
Carson City 10:43:58 -51.3 Dark Down 75.4 216.4 Up 10:28:58 - 10:58:58 -1497
Yerington 10:43:55 -50.9 Dark Down 75.3 218.8 Up 10:28:55 - 10:58:55 -1497
Gardnerville 10:43:57 -51.3 Dark Down 75.6 217.1 Up 10:28:57 - 10:58:57 -1520
Hawthorne 10:43:52 -50.6 Dark Down 75.4 221.4 Up 10:28:52 - 10:58:52 -1528
Tonopah 10:43:46 -49.6 Dark Down 75.0 226.5 Up 10:28:46 - 10:58:46 -1530
Lee Vining 10:43:53 -51.0 Dark Down 76.1 221.4 Up 10:28:53 - 10:58:53 -1600
Indian Springs 10:43:37 -48.6 Dark Down 75.0 234.5 Up 10:28:37 - 10:58:37 -1628
Beatty 10:43:42 -49.4 Dark Down 75.5 230.9 Up 10:28:42 - 10:58:42 -1631
Bishop 10:43:49 -50.6 Dark Down 76.1 225.2 Up 10:28:49 - 10:58:49 -1637
Henderson 10:43:34 -48.1 Dark Down 74.8 237.7 Up 10:28:34 - 10:58:34 -1658
Patrick 10:43:28 -47.2 Dark Down 74.4 241.9 Up 10:28:28 - 10:58:28 -1682
Lone Pine 10:43:46 -50.4 Dark Down 76.5 228.4 Up 10:28:46 - 10:58:46 -1703
Kingman/Dolan Springs 10:43:28 -47.4 Dark Down 74.6 242.3 Up 10:28:28 - 10:58:28 -1711
Searchlight/Boulder City 10:43:32 -48.0 Dark Down 75.1 239.6 Up 10:28:32 - 10:58:32 -1713
Laughlin/Bullhead City 10:43:30 -47.8 Dark Down 75.0 241.3 Up 10:28:30 - 10:58:30 -1731
Mohave Valley 10:43:29 -47.8 Dark Down 75.1 242.2 Up 10:28:29 - 10:58:29 -1758
Lake Havasu City 10:43:27 -47.6 Dark Down 75.1 244.0 Up 10:28:27 - 10:58:27 -1789
Parker 10:43:26 -47.6 Dark Down 75.3 245.3 Up 10:28:26 - 10:58:26 -1824
Blythe 10:43:26 -47.9 Dark Down 75.7 246.6 Up 10:28:26 - 10:58:26 -1887
CPSLO 10:43:54 -52.6 Dark Down 78.9 224.6 Up 10:28:54 - 10:58:54 -1918
Idyllwild 10:43:35 -49.6 Dark Down 77.2 241.8 Up 10:28:35 - 10:58:35 -1949
Calipatria 10:43:29 -48.7 Dark Down 76.6 246.6 Up 10:28:29 - 10:58:29 -1969
Wildwood 10:43:44 -51.1 Dark Down 78.4 235.7 Up 10:28:44 - 10:58:44 -1975
Yuma 10:43:25 -47.9 Dark Down 76.1 249.9 Up 10:28:25 - 10:58:25 -1981

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 523965, (2020/12/19 10:44UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  3.44 144
PPM 098327     08:05:37.0 +27:31:49  6.1  1.30 149
PPM 098273     08:03:18.5 +26:16:03  7.0  1.05 149
PPM 098247     08:02:11.1 +26:38:16  8.9  0.61 148
PPM 098207     08:00:03.5 +26:59:21 10.2  0.07 148
523965         08:00:10.4 +27:03:19 14.1       148
Positions are for J2000

Event circumstances last updated at 2019/07/02 21:55:33 UT

Marc W. Buie, Southwest Research Institute

RECON