"Pseudo-MPEC" for TianweB = Tianwen-1 booster
Created 2020 Jul 26 16:18:29 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
We also have data for the Tianwen-1 spacecraft. It took us a while to figure out which object was the booster and which was the spacecraft, but we're now confident of the identification.
Astrometry:
TianweB KC2020 07 24.06585200 46 11.114+14 37 57.91 15.1 G J04
TianweB KC2020 07 24.06818000 46 10.795+14 38 25.01 15.1 G J04
TianweB KC2020 07 24.07051300 46 10.420+14 38 51.92 15.1 G J04
TianweB CK200724:022307 011.26580 +14.60272 15.1 GV I89
TianweB CK200724:022610 011.26183 +14.60817 15.3 GV I89
TianweB CK200724:023039 011.25551 +14.61631 16.1 GV I89
TianweB KC2020 07 24.10567100 45 59.840+14 45 09.84 15.3 G J04
TianweB CK200724:023458 011.24968 +14.62379 15.1 GV I89
TianweB KC2020 07 24.10797700 45 58.885+14 45 32.72 15.2 G J04
TianweB KC2020 07 24.20525300 44 56.340+14 58 11.03 15.3 G J04
TianweB KC2020 07 24.20757100 44 54.591+14 58 24.01 15.4 G J04
TW001a CK200724:191237 012.45843 +15.25132 16.3 GV N88
TW001a CK200724:192330 012.45118 +15.26100 16.8 GV N88
TW001a CK200724:193607 012.44183 +15.27163 16.2 GV N88
TW001a CK200724:194845 012.43138 +15.28226 16.5 GV N88
TianweB KC2020 07 25.04562100 50 45.267+15 26 19.45 16.9 G Z84
TianweB KC2020 07 25.04939800 50 44.308+15 26 34.59 16.7 G Z84
TianweB KC2020 07 25.05317400 50 43.345+15 26 49.06 16.6 G Z84
TianweB KC2020 07 25.05695400 50 42.341+15 27 03.29 16.7 G Z84
TianweB KC2020 07 25.06407 00 50 15.73 +15 24 06.3 16.7 G 204
TianweB KC2020 07 25.06650 00 50 14.97 +15 24 14.1 16.7 G 204
TianweB KC2020 07 25.06893 00 50 14.18 +15 24 21.7 16.7 G 204
TianweB KC2020 07 25.07136 00 50 13.38 +15 24 29.2 16.7 G 204
TianweB KC2020 07 25.07380 00 50 12.57 +15 24 36.7 16.7 G 204
TianweB KC2020 07 25.07776 00 50 11.20 +15 24 49.0 16.8 G 204
TianweB KC2020 07 25.08020 00 50 10.37 +15 24 56.1 16.8 G 204
TianweB KC2020 07 25.08263 00 50 09.53 +15 25 03.3 16.8 G 204
TianweB KC2020 07 25.08506 00 50 08.68 +15 25 10.2 16.8 G 204
TianweB KC2020 07 25.08749 00 50 07.79 +15 25 17.1 16.9 G 204
TianweB KC2020 07 25.12635200 50 16.579+15 30 49.19 16.9 G Z84
TianweB KC2020 07 25.12909100 50 15.358+15 30 56.32 16.8 G Z84
TianweB KC2020 07 25.13184200 50 14.113+15 31 03.47 16.8 G Z84
TianweB KC2020 07 25.13459400 50 12.864+15 31 10.50 16.9 G Z84
TianweB KC2020 07 25.18418200 49 49.189+15 32 53.54 16.8 G Z84
Tianw1B CK200725:212337 012.91269 +15.70488 17.8 GV N88
Tianw1B CK200725:212944 012.90649 +15.70653 17.5 GV N88
Tianw1B CK200725:213549 012.90084 +15.70811 17.4 GV N88
TianweB CK200725:23383435 013.08431 +15.63504 17.7 GV J95
TianweB CK200725:23430634 013.08411 +15.63713 17.9 GV J95
TianweB CK200725:23473428 013.08364 +15.63895 17.5 GV J95
TianweB KC2020 07 26.12582700 52 06.976+15 47 11.03 17.5 G Z84
TianweB KC2020 07 26.12750400 52 06.408+15 47 13.32 17.6 G Z84
TianweB KC2020 07 26.12918600 52 05.818+15 47 15.68 17.8 G Z84
Station data:
(204) Schiaparelli Observatory (N45.867933 E8.770800) Italy. Observer L.
Buzzi. 0.60-m f/4.64 Newtonian + CCD.
(I89) iTelescope Observatory, Nerpio (N38.165287 W2.326100) Spain.
Observer M. Suzuki.
(J04) ESA Optical Ground Station, Tenerife (N28.300924 W16.511830) Canary
Islands (Spain). Observer D. Abreu. Measurers M. Micheli, D. Koschny, E.
Schwab, M. Busch, A. Knöfel. 1.0-m f/4.4 reflector + CCD.
(J95) Great Shefford (N51.474969 W1.447003) UK. Observer P. Birtwhistle.
(N88) Xingming Observatory #3, Nanshan (N43.471787 E87.173220) China.
Observer X. Gao. Measurers M. Zhang, Q.-Z. Ye.
(Z84) Calar Alto-Schmidt (N37.223981 W2.548143) Spain. Observer E. Schwab.
Measurers E. Schwab, D. Koschny, M. Micheli. 0.8-m f/3 Schmidt + CCD.
Orbital elements: TianweB (geocentric, hyperbolic escape)
Perigee 2020 Jul 23.2194966 +/- 0.000122 TT = 5:16:04.50 (JD 2459053.7194966)
Epoch 2020 Jul 23.3 TT = JDT 2459053.8 Find_Orb
q 6652.3613467 +/- 5.79 (J2000 equator)
H 26.3 G 0.15 Peri. 252.7406326 +/- 0.014
Node 339.2565700 +/- 0.017
e 1.216046912 +/- 0.000333 Incl. 27.2742914 +/- 0.00028
From 43 observations 2020 July 24-26; mean residual 0".568
Orbital elements: TianweB (heliocentric, Mars cruise)
Perihelion 2020 Jul 18.4135073 +/- 0.000169 TT = 9:55:27.03 (JD 2459048.9135073)
Epoch 2020 Oct 1.0 TT = JDT 2459123.5 Earth MOID: 0.0002 Ma: 0.0042
M 48.1062026155 +/- 0.008 (J2000 ecliptic) Find_Orb
n 0.6449720439 +/- 0.000113 Peri. 355.5009808 +/- 0.0008
a 1.3267083284 +/- 0.000155 Node 299.9587433 +/- 0.00042
e 0.234530336 +/- 9e-5 Incl. 1.0446863 +/- 0.00031
P 1.53/558.15d H 26.3 G 0.15 U 6.6
q 1.0155549774 +/- 4.61e-7 Q 1.6378616794 +/- 0.000311
From 43 observations 2020 July 24-26; mean residual 0".568
Orbital elements: TianweB, arrival at Mars
Perimars 2021 Jan 17.2024549 +/- 0.157 TT = 4:51:32.10 (JD 2459231.7024549)
Epoch 2021 Jan 17.0 TT = JDT 2459231.5 Find_Orb
q 0.0148088792 +/- 3.74e-5 (J2000 ecliptic)
H 26.3 G 0.15 Peri. 188.1819571 +/- 1.1
Node 111.7544583 +/- 1.2
e 476.249547944 +/- 2.94 Incl. 18.5160032 +/- 0.09
From 43 observations 2020 July 24-26; mean residual 0".568
Residuals in arcseconds: 200724 J04 1.42+ 1.17- 200725 Z84 .122+ .124+ 200725 Z84 .343- .277+ 200724 J04 1.43+ 1.07- 200725 Z84 .330- .441+ 200725 Z84 .433- .281+ 200724 J04 1.30+ 1.00- 200725 Z84 .141- .288+ 200725 Z84 .423- .297+ 200724 I89 .404+ .567- 200725 Z84 .155+ .079+ 200725 Z84 .693- .227+ 200724 I89 .593+ .696- 200725 204 .230- .071- 200725 N88 .428+ .068- 200724 I89 .344- .064- 200725 204 .090- .031+ 200725 N88 .462- .183- 200724 J04 .852+ .635- 200725 204 .211- .023+ 200725 N88 .631+ .308- 200724 I89 .153+ .340- 200725 204 .308- 4.2m+ 200725 J95 .377+ .581- 200724 J04 1.35+ .711- 200725 204 .338- .045+ 200725 J95 .648+ .263- 200724 J04 .621- .496+ 200725 204 .849- .433+ 200725 J95 .287+ .771- 200724 J04 .629- .459+ 200725 204 .758- .314+ 200726 Z84 .636+ .109- 200724 N88 .171- .340+ 200725 204 .715- .417+ 200726 Z84 .683+ .234- 200724 N88 .347- .707+ 200725 204 .675- .311+ 200726 Z84 .480+ .264- 200724 N88 .353- .144+ 200725 204 1.08- .298+ 200724 N88 .614- .798+ 200725 Z84 .365- .394+ Ephemerides (geocentric): Date (UTC) HH RA Dec delta r elong mag " sig PA ---- -------- -------------- ----------- ----- ------ ----- --- -------- 2020 07 24 00 00 41 34.943 +14 55 39.51 302760 1.0164 105.6 15.4 .699 135 2020 07 24 01 00 42 12.502 +14 59 30.80 316913 1.0164 105.5 15.5 .677 134 2020 07 24 02 00 42 46.864 +15 03 01.88 331018 1.0165 105.4 15.6 .656 134 2020 07 24 03 00 43 18.428 +15 06 15.31 345077 1.0165 105.3 15.7 .636 134 2020 07 24 04 00 43 47.527 +15 09 13.25 359096 1.0165 105.2 15.8 .618 133 2020 07 24 05 00 44 14.445 +15 11 57.51 373075 1.0165 105.1 15.9 .602 133 2020 07 24 06 00 44 39.421 +15 14 29.62 387020 1.0165 105.1 16.0 .586 133 2020 07 24 07 00 45 02.661 +15 16 50.89 400931 1.0165 105.0 16.1 .571 132 2020 07 24 08 00 45 24.342 +15 19 02.45 414811 1.0166 104.9 16.1 .557 132 2020 07 24 09 00 45 44.619 +15 21 05.27 428663 1.0166 104.9 16.2 .544 132 2020 07 24 10 00 46 03.625 +15 23 00.19 442487 1.0166 104.8 16.3 .531 132 2020 07 24 11 00 46 21.476 +15 24 47.95 456287 1.0166 104.8 16.3 .519 132 2020 07 24 12 00 46 38.277 +15 26 29.21 470062 1.0166 104.8 16.4 .508 132 2020 07 24 13 00 46 54.117 +15 28 04.53 483815 1.0166 104.7 16.5 .497 132 2020 07 24 14 00 47 09.079 +15 29 34.42 497546 1.0167 104.7 16.5 .487 132 2020 07 24 15 00 47 23.232 +15 30 59.34 511257 1.0167 104.7 16.6 .476 132 2020 07 24 16 00 47 36.642 +15 32 19.67 524949 1.0167 104.7 16.7 .467 132 2020 07 24 17 00 47 49.365 +15 33 35.77 538624 1.0167 104.7 16.7 .458 132 2020 07 24 18 00 48 01.454 +15 34 47.98 552280 1.0167 104.6 16.8 .449 132 2020 07 24 19 00 48 12.955 +15 35 56.57 565921 1.0168 104.6 16.8 .440 133 2020 07 24 20 00 48 23.909 +15 37 01.82 579546 1.0168 104.6 16.9 .432 133 2020 07 24 21 00 48 34.355 +15 38 03.95 593156 1.0168 104.6 16.9 .424 133 2020 07 24 22 00 48 44.328 +15 39 03.17 606752 1.0168 104.6 17.0 .416 133 2020 07 24 23 00 48 53.858 +15 39 59.69 620334 1.0168 104.6 17.0 .409 133 2020 07 25 00 00 49 02.975 +15 40 53.69 633903 1.0168 104.6 17.1 .402 134 2020 07 25 01 00 49 11.705 +15 41 45.32 647460 1.0169 104.6 17.1 .395 134 2020 07 25 02 00 49 20.071 +15 42 34.73 661005 1.0169 104.6 17.2 .388 134 2020 07 25 03 00 49 28.096 +15 43 22.05 674538 1.0169 104.6 17.2 .382 135 2020 07 25 04 00 49 35.801 +15 44 07.43 688061 1.0169 104.6 17.2 .375 135 2020 07 25 05 00 49 43.204 +15 44 50.96 701573 1.0169 104.6 17.3 .369 135 2020 07 25 06 00 49 50.321 +15 45 32.76 715074 1.0170 104.6 17.3 .363 136 2020 07 25 07 00 49 57.170 +15 46 12.92 728566 1.0170 104.7 17.4 .358 136 2020 07 25 08 00 50 03.765 +15 46 51.53 742049 1.0170 104.7 17.4 .352 136 2020 07 25 09 00 50 10.119 +15 47 28.68 755522 1.0170 104.7 17.4 .347 137 2020 07 25 10 00 50 16.246 +15 48 04.45 768986 1.0170 104.7 17.5 .342 137 2020 07 25 11 00 50 22.157 +15 48 38.91 782442 1.0171 104.7 17.5 .337 138 2020 07 25 12 00 50 27.864 +15 49 12.12 795890 1.0171 104.7 17.6 .332 138 2020 07 25 13 00 50 33.376 +15 49 44.16 809330 1.0171 104.7 17.6 .327 138 2020 07 25 14 00 50 38.703 +15 50 15.07 822762 1.0171 104.8 17.6 .322 139 2020 07 25 15 00 50 43.854 +15 50 44.91 836187 1.0171 104.8 17.7 .318 139 2020 07 25 16 00 50 48.838 +15 51 13.74 849605 1.0172 104.8 17.7 .314 140 2020 07 25 17 00 50 53.662 +15 51 41.61 863015 1.0172 104.8 17.7 .309 140 2020 07 25 18 00 50 58.333 +15 52 08.54 876419 1.0172 104.8 17.8 .305 141 2020 07 25 19 00 51 02.860 +15 52 34.60 889816 1.0172 104.8 17.8 .301 141 2020 07 25 20 00 51 07.248 +15 52 59.82 903207 1.0173 104.9 17.8 .297 142 2020 07 25 21 00 51 11.502 +15 53 24.23 916592 1.0173 104.9 17.9 .294 142 2020 07 25 22 00 51 15.630 +15 53 47.88 929971 1.0173 104.9 17.9 .290 143 2020 07 25 23 00 51 19.637 +15 54 10.79 943344 1.0173 104.9 17.9 .287 143 2020 07 26 00 00 51 23.527 +15 54 33.00 956711 1.0173 105.0 17.9 .283 144 2020 07 26 01 00 51 27.305 +15 54 54.53 970073 1.0174 105.0 18.0 .280 144 2020 07 26 02 00 51 30.977 +15 55 15.41 983429 1.0174 105.0 18.0 .277 145 2020 07 26 03 00 51 34.546 +15 55 35.68 996780 1.0174 105.0 18.0 .274 145 2020 07 26 04 00 51 38.016 +15 55 55.35 .00675 1.0174 105.0 18.1 .270 146 2020 07 26 05 00 51 41.392 +15 56 14.44 .00684 1.0174 105.1 18.1 .268 146 2020 07 26 06 00 51 44.676 +15 56 32.99 .00693 1.0175 105.1 18.1 .265 147 2020 07 26 07 00 51 47.873 +15 56 51.00 .00702 1.0175 105.1 18.1 .262 148 2020 07 26 08 00 51 50.986 +15 57 08.51 .00711 1.0175 105.1 18.2 .259 148 2020 07 26 09 00 51 54.018 +15 57 25.53 .00720 1.0175 105.2 18.2 .257 149 2020 07 26 10 00 51 56.971 +15 57 42.08 .00729 1.0176 105.2 18.2 .254 149 2020 07 26 11 00 51 59.849 +15 57 58.17 .00738 1.0176 105.2 18.2 .252 150 2020 07 26 12 00 52 02.655 +15 58 13.83 .00746 1.0176 105.3 18.3 .249 150 2020 07 26 13 00 52 05.390 +15 58 29.06 .00755 1.0176 105.3 18.3 .247 151 2020 07 26 14 00 52 08.058 +15 58 43.88 .00764 1.0177 105.3 18.3 .245 152 2020 07 26 15 00 52 10.661 +15 58 58.31 .00773 1.0177 105.3 18.3 .242 152 2020 07 26 16 00 52 13.201 +15 59 12.36 .00782 1.0177 105.4 18.4 .240 153 2020 07 26 17 00 52 15.679 +15 59 26.05 .00791 1.0177 105.4 18.4 .238 153 2020 07 26 18 00 52 18.099 +15 59 39.37 .00800 1.0177 105.4 18.4 .236 154 2020 07 26 19 00 52 20.462 +15 59 52.36 .00809 1.0178 105.5 18.4 .234 155 2020 07 26 20 00 52 22.770 +16 00 05.01 .00818 1.0178 105.5 18.5 .233 155 2020 07 26 21 00 52 25.025 +16 00 17.35 .00826 1.0178 105.5 18.5 .231 156 2020 07 26 22 00 52 27.228 +16 00 29.37 .00835 1.0178 105.5 18.5 .229 156 2020 07 26 23 00 52 29.381 +16 00 41.09 .00844 1.0179 105.6 18.5 .227 157 2020 07 27 00 00 52 31.485 +16 00 52.52 .00853 1.0179 105.6 18.5 .226 158 2020 07 27 01 00 52 33.543 +16 01 03.66 .00862 1.0179 105.6 18.6 .224 158 2020 07 27 02 00 52 35.555 +16 01 14.53 .00871 1.0179 105.7 18.6 .223 159 2020 07 27 03 00 52 37.523 +16 01 25.14 .00880 1.0180 105.7 18.6 .221 159 2020 07 27 04 00 52 39.448 +16 01 35.49 .00888 1.0180 105.7 18.6 .220 160 2020 07 27 05 00 52 41.331 +16 01 45.59 .00897 1.0180 105.8 18.7 .218 161 2020 07 27 06 00 52 43.175 +16 01 55.44 .00906 1.0180 105.8 18.7 .217 161 2020 07 27 07 00 52 44.979 +16 02 05.06 .00915 1.0181 105.8 18.7 .216 162 2020 07 27 08 00 52 46.744 +16 02 14.45 .00924 1.0181 105.9 18.7 .214 163 2020 07 27 09 00 52 48.473 +16 02 23.62 .00933 1.0181 105.9 18.7 .213 163 2020 07 27 10 00 52 50.166 +16 02 32.57 .00942 1.0181 105.9 18.8 .212 164 2020 07 27 11 00 52 51.824 +16 02 41.32 .00950 1.0182 105.9 18.8 .211 164 2020 07 27 12 00 52 53.448 +16 02 49.85 .00959 1.0182 106.0 18.8 .210 165 2020 07 27 13 00 52 55.039 +16 02 58.19 .00968 1.0182 106.0 18.8 .209 166 2020 07 27 14 00 52 56.597 +16 03 06.34 .00977 1.0182 106.0 18.8 .208 166 2020 07 27 15 00 52 58.124 +16 03 14.29 .00986 1.0183 106.1 18.8 .207 167 2020 07 27 16 00 52 59.621 +16 03 22.07 .00995 1.0183 106.1 18.9 .206 167 2020 07 27 17 00 53 01.088 +16 03 29.66 .01003 1.0183 106.1 18.9 .205 168 2020 07 27 18 00 53 02.526 +16 03 37.08 .01012 1.0183 106.2 18.9 .204 169 2020 07 27 19 00 53 03.935 +16 03 44.34 .01021 1.0184 106.2 18.9 .203 169 2020 07 27 20 00 53 05.317 +16 03 51.42 .01030 1.0184 106.2 18.9 .203 170 2020 07 27 21 00 53 06.672 +16 03 58.35 .01039 1.0184 106.3 19.0 .202 171 2020 07 27 22 00 53 08.001 +16 04 05.12 .01048 1.0184 106.3 19.0 .201 171 2020 07 27 23 00 53 09.305 +16 04 11.73 .01056 1.0185 106.3 19.0 .201 172 2020 07 28 00 00 53 10.584 +16 04 18.20 .01065 1.0185 106.4 19.0 .200 172 2020 07 28 01 00 53 11.838 +16 04 24.52 .01074 1.0185 106.4 19.0 .199 173 2020 07 28 02 00 53 13.068 +16 04 30.70 .01083 1.0186 106.4 19.0 .199 174 2020 07 28 03 00 53 14.276 +16 04 36.74 .01092 1.0186 106.5 19.1 .198 174