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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Perihelion coming up in a few minutes
From: Dave Walden
Date: 2021 Jan 2, 15:57 -0800
From: Dave Walden
Date: 2021 Jan 2, 15:57 -0800
Yes, JPL.
'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. Units: AU and KM/S '1-way_down_LT' = 1-way down-leg light-time from target center to observer. The elapsed time since light (observed at print-time) would have left or reflected off a point at the center of the target. Units: MINUTES
Date__(UT)__HR:MN:SC.fff R.A._____(ICRF)_____DEC delta deldot 1-way_down_LT ************************************************************************************************ $$SOE 2021-Jan-02 13:49:00.000 18 52 36.97 -22 53 08.2 0.98325703644523 -0.0000105 8.17749942 2021-Jan-02 13:49:01.000 18 52 36.98 -22 53 08.2 0.98325703644516 -0.0000104 8.17749942 2021-Jan-02 13:49:02.000 18 52 36.98 -22 53 08.2 0.98325703644509 -0.0000103 8.17749942 2021-Jan-02 13:49:03.000 18 52 36.98 -22 53 08.2 0.98325703644502 -0.0000101 8.17749942 2021-Jan-02 13:49:04.000 18 52 36.99 -22 53 08.2 0.98325703644496 -0.0000100 8.17749942 2021-Jan-02 13:49:05.000 18 52 36.99 -22 53 08.2 0.98325703644489 -0.0000099 8.17749942 2021-Jan-02 13:49:06.000 18 52 36.99 -22 53 08.2 0.98325703644482 -0.0000098 8.17749942 2021-Jan-02 13:49:07.000 18 52 36.99 -22 53 08.2 0.98325703644476 -0.0000097 8.17749942 2021-Jan-02 13:49:08.000 18 52 37.00 -22 53 08.2 0.98325703644469 -0.0000095 8.17749942 2021-Jan-02 13:49:09.000 18 52 37.00 -22 53 08.2 0.98325703644463 -0.0000094 8.17749942 2021-Jan-02 13:49:10.000 18 52 37.00 -22 53 08.2 0.98325703644457 -0.0000093 8.17749942 2021-Jan-02 13:49:11.000 18 52 37.01 -22 53 08.2 0.98325703644451 -0.0000092 8.17749942 2021-Jan-02 13:49:12.000 18 52 37.01 -22 53 08.2 0.98325703644445 -0.0000090 8.17749942 2021-Jan-02 13:49:13.000 18 52 37.01 -22 53 08.2 0.98325703644439 -0.0000089 8.17749942 2021-Jan-02 13:49:14.000 18 52 37.02 -22 53 08.2 0.98325703644433 -0.0000088 8.17749942 2021-Jan-02 13:49:15.000 18 52 37.02 -22 53 08.2 0.98325703644427 -0.0000087 8.17749942 2021-Jan-02 13:49:16.000 18 52 37.02 -22 53 08.1 0.98325703644421 -0.0000085 8.17749942 2021-Jan-02 13:49:17.000 18 52 37.03 -22 53 08.1 0.98325703644415 -0.0000084 8.17749942 2021-Jan-02 13:49:18.000 18 52 37.03 -22 53 08.1 0.98325703644410 -0.0000083 8.17749942 2021-Jan-02 13:49:19.000 18 52 37.03 -22 53 08.1 0.98325703644404 -0.0000082 8.17749942 2021-Jan-02 13:49:20.000 18 52 37.03 -22 53 08.1 0.98325703644399 -0.0000080 8.17749942 2021-Jan-02 13:49:21.000 18 52 37.04 -22 53 08.1 0.98325703644394 -0.0000079 8.17749942 2021-Jan-02 13:49:22.000 18 52 37.04 -22 53 08.1 0.98325703644388 -0.0000078 8.17749942 2021-Jan-02 13:49:23.000 18 52 37.04 -22 53 08.1 0.98325703644383 -0.0000077 8.17749942 2021-Jan-02 13:49:24.000 18 52 37.05 -22 53 08.1 0.98325703644378 -0.0000075 8.17749942 2021-Jan-02 13:49:25.000 18 52 37.05 -22 53 08.1 0.98325703644373 -0.0000074 8.17749942 2021-Jan-02 13:49:26.000 18 52 37.05 -22 53 08.1 0.98325703644368 -0.0000073 8.17749942 2021-Jan-02 13:49:27.000 18 52 37.06 -22 53 08.1 0.98325703644363 -0.0000072 8.17749942 2021-Jan-02 13:49:28.000 18 52 37.06 -22 53 08.1 0.98325703644359 -0.0000071 8.17749942 2021-Jan-02 13:49:29.000 18 52 37.06 -22 53 08.1 0.98325703644354 -0.0000069 8.17749942 2021-Jan-02 13:49:30.000 18 52 37.07 -22 53 08.1 0.98325703644349 -0.0000068 8.17749942 2021-Jan-02 13:49:31.000 18 52 37.07 -22 53 08.1 0.98325703644345 -0.0000067 8.17749942 2021-Jan-02 13:49:32.000 18 52 37.07 -22 53 08.1 0.98325703644340 -0.0000066 8.17749942 2021-Jan-02 13:49:33.000 18 52 37.07 -22 53 08.1 0.98325703644336 -0.0000064 8.17749942 2021-Jan-02 13:49:34.000 18 52 37.08 -22 53 08.1 0.98325703644332 -0.0000063 8.17749942 2021-Jan-02 13:49:35.000 18 52 37.08 -22 53 08.1 0.98325703644328 -0.0000062 8.17749942 2021-Jan-02 13:49:36.000 18 52 37.08 -22 53 08.1 0.98325703644323 -0.0000061 8.17749942 2021-Jan-02 13:49:37.000 18 52 37.09 -22 53 08.1 0.98325703644319 -0.0000059 8.17749942 2021-Jan-02 13:49:38.000 18 52 37.09 -22 53 08.1 0.98325703644316 -0.0000058 8.17749942 2021-Jan-02 13:49:39.000 18 52 37.09 -22 53 08.1 0.98325703644312 -0.0000057 8.17749942 2021-Jan-02 13:49:40.000 18 52 37.10 -22 53 08.1 0.98325703644308 -0.0000056 8.17749942 2021-Jan-02 13:49:41.000 18 52 37.10 -22 53 08.1 0.98325703644304 -0.0000054 8.17749942 2021-Jan-02 13:49:42.000 18 52 37.10 -22 53 08.0 0.98325703644301 -0.0000053 8.17749942 2021-Jan-02 13:49:43.000 18 52 37.10 -22 53 08.0 0.98325703644297 -0.0000052 8.17749942 2021-Jan-02 13:49:44.000 18 52 37.11 -22 53 08.0 0.98325703644294 -0.0000051 8.17749942 2021-Jan-02 13:49:45.000 18 52 37.11 -22 53 08.0 0.98325703644290 -0.0000049 8.17749942 2021-Jan-02 13:49:46.000 18 52 37.11 -22 53 08.0 0.98325703644287 -0.0000048 8.17749942 2021-Jan-02 13:49:47.000 18 52 37.12 -22 53 08.0 0.98325703644284 -0.0000047 8.17749942 2021-Jan-02 13:49:48.000 18 52 37.12 -22 53 08.0 0.98325703644281 -0.0000046 8.17749942 2021-Jan-02 13:49:49.000 18 52 37.12 -22 53 08.0 0.98325703644278 -0.0000044 8.17749942 2021-Jan-02 13:49:50.000 18 52 37.13 -22 53 08.0 0.98325703644275 -0.0000043 8.17749942 2021-Jan-02 13:49:51.000 18 52 37.13 -22 53 08.0 0.98325703644272 -0.0000042 8.17749942 2021-Jan-02 13:49:52.000 18 52 37.13 -22 53 08.0 0.98325703644269 -0.0000041 8.17749942 2021-Jan-02 13:49:53.000 18 52 37.14 -22 53 08.0 0.98325703644267 -0.0000040 8.17749942 2021-Jan-02 13:49:54.000 18 52 37.14 -22 53 08.0 0.98325703644264 -0.0000038 8.17749942 2021-Jan-02 13:49:55.000 18 52 37.14 -22 53 08.0 0.98325703644261 -0.0000037 8.17749942 2021-Jan-02 13:49:56.000 18 52 37.14 -22 53 08.0 0.98325703644259 -0.0000036 8.17749942 2021-Jan-02 13:49:57.000 18 52 37.15 -22 53 08.0 0.98325703644257 -0.0000035 8.17749942 2021-Jan-02 13:49:58.000 18 52 37.15 -22 53 08.0 0.98325703644254 -0.0000033 8.17749942 2021-Jan-02 13:49:59.000 18 52 37.15 -22 53 08.0 0.98325703644252 -0.0000032 8.17749942 2021-Jan-02 13:50:00.000 18 52 37.16 -22 53 08.0 0.98325703644250 -0.0000031 8.17749942 2021-Jan-02 13:50:01.000 18 52 37.16 -22 53 08.0 0.98325703644248 -0.0000030 8.17749942 2021-Jan-02 13:50:02.000 18 52 37.16 -22 53 08.0 0.98325703644246 -0.0000028 8.17749942 2021-Jan-02 13:50:03.000 18 52 37.17 -22 53 08.0 0.98325703644244 -0.0000027 8.17749942 2021-Jan-02 13:50:04.000 18 52 37.17 -22 53 08.0 0.98325703644243 -0.0000026 8.17749942 2021-Jan-02 13:50:05.000 18 52 37.17 -22 53 08.0 0.98325703644241 -0.0000025 8.17749942 2021-Jan-02 13:50:06.000 18 52 37.18 -22 53 08.0 0.98325703644239 -0.0000023 8.17749942 2021-Jan-02 13:50:07.000 18 52 37.18 -22 53 08.0 0.98325703644238 -0.0000022 8.17749942 2021-Jan-02 13:50:08.000 18 52 37.18 -22 53 07.9 0.98325703644236 -0.0000021 8.17749942 2021-Jan-02 13:50:09.000 18 52 37.18 -22 53 07.9 0.98325703644235 -0.0000020 8.17749942 2021-Jan-02 13:50:10.000 18 52 37.19 -22 53 07.9 0.98325703644234 -0.0000018 8.17749942 2021-Jan-02 13:50:11.000 18 52 37.19 -22 53 07.9 0.98325703644233 -0.0000017 8.17749942 2021-Jan-02 13:50:12.000 18 52 37.19 -22 53 07.9 0.98325703644231 -0.0000016 8.17749942 2021-Jan-02 13:50:13.000 18 52 37.20 -22 53 07.9 0.98325703644230 -0.0000015 8.17749942 2021-Jan-02 13:50:14.000 18 52 37.20 -22 53 07.9 0.98325703644229 -0.0000013 8.17749942 2021-Jan-02 13:50:15.000 18 52 37.20 -22 53 07.9 0.98325703644229 -0.0000012 8.17749942 2021-Jan-02 13:50:16.000 18 52 37.21 -22 53 07.9 0.98325703644228 -0.0000011 8.17749942 2021-Jan-02 13:50:17.000 18 52 37.21 -22 53 07.9 0.98325703644227 -0.0000010 8.17749942 2021-Jan-02 13:50:18.000 18 52 37.21 -22 53 07.9 0.98325703644226 -0.0000009 8.17749942 2021-Jan-02 13:50:19.000 18 52 37.21 -22 53 07.9 0.98325703644226 -0.0000007 8.17749942 2021-Jan-02 13:50:20.000 18 52 37.22 -22 53 07.9 0.98325703644226 -0.0000006 8.17749942 2021-Jan-02 13:50:21.000 18 52 37.22 -22 53 07.9 0.98325703644225 -0.0000005 8.17749942 2021-Jan-02 13:50:22.000 18 52 37.22 -22 53 07.9 0.98325703644225 -0.0000004 8.17749942 2021-Jan-02 13:50:23.000 18 52 37.23 -22 53 07.9 0.98325703644225 -0.0000002 8.17749942 2021-Jan-02 13:50:24.000 18 52 37.23 -22 53 07.9 0.98325703644225 -0.0000001 8.17749942 2021-Jan-02 13:50:25.000 18 52 37.23 -22 53 07.9 0.98325703644225 0.0000000 8.17749942 2021-Jan-02 13:50:26.000 18 52 37.24 -22 53 07.9 0.98325703644225 0.0000001 8.17749942 2021-Jan-02 13:50:27.000 18 52 37.24 -22 53 07.9 0.98325703644225 0.0000003 8.17749942 2021-Jan-02 13:50:28.000 18 52 37.24 -22 53 07.9 0.98325703644225 0.0000004 8.17749942 2021-Jan-02 13:50:29.000 18 52 37.25 -22 53 07.9 0.98325703644225 0.0000005 8.17749942 2021-Jan-02 13:50:30.000 18 52 37.25 -22 53 07.9 0.98325703644226 0.0000006 8.17749942 2021-Jan-02 13:50:31.000 18 52 37.25 -22 53 07.9 0.98325703644226 0.0000008 8.17749942 2021-Jan-02 13:50:32.000 18 52 37.25 -22 53 07.9 0.98325703644227 0.0000009 8.17749942