21P/Giacobini-Zinner
Last updated 2019 May 23
+ Orbit O-C
21P/Giacobini-Zinner
From 2472 observations 2011 Aug. 6-2019 Apr. 11, mean residual 0".95.
Nongravitational parameters A1 = +0.30, A2 = -0.1271.
Epoch = 2018 Aug. 30.0 TT JDT = 2458360.5
T = 2018 Sept. 10.2773756518 TT +/- 0.0000641145 0.0000000002
Peri. = 172.8605241143 +/- 0.0000720442 0.0000000002
Node = 195.3918308327 (2000.0) +/- 0.0000128939 0.0000000000
Incl. = 31.9983103455 +/- 0.0000100815 0.0000000000
q = 1.0128268958 AU +/- 0.0000006400 -0.0000000000
e = 0.7104603269 +/- 0.0000006870 -0.0000000000
A1 = 0.2982617255 +/- 0.0071125277 0.0000000281
A2 = -0.1271366402 +/- 0.0048140906 0.0000000045
a = 3.4980591254 AU +/- 0.0000024553
n = 0.1506479947 +/- 0.0000001586
P = 6.5424546162 years +/- 0.0000068883
21P Giacobini-Zinner *18800223.90440 1.2366316 0.6614897 166.98503 199.79492 33.44829 18800215 47 19001224 19330819 9.0 10.0 h3E1 2.2 x 2 +0.27 +0.0350 Kinoshita P 6.98 3.6531573
21P Giacobini-Zinner *18870218.60562 1.2411317 0.6607208 166.98908 199.83405 33.40893 18870218 47 19001224 19330819 9.0 10.0 h3E1 2.2 x 2 +0.27 +0.0350 Kinoshita P 7.00 3.6581429
21P Giacobini-Zinner *18940213.26027 1.2329251 0.6620302 167.07356 199.77058 33.50346 18940221 47 19001224 19330819 9.0 10.0 h3E1 2.2 x 2 +0.27 +0.0350 Kinoshita P 6.97 3.6480332
Jupiter 0.1883 AU 18981028.0 TT
21P/1900 Y1 Giacobini-Zinner 19001128.49587 0.9315160 0.7315644 171.04558 198.13622 29.82922 19001207 47 19001224 19330819 9.0 10.0 h3E1 2.2 1 2 +0.27 +0.0350 Kinoshita P 6.46 3.4701660
21P Giacobini-Zinner *19070519.50892 0.9308188 0.7316965 171.12265 198.06666 29.85169 19070525 47 19001224 19330819 9.0 10.0 h3E1 2.2 x 2 +0.27 +0.0350 Kinoshita P 6.46 3.4692758
21P/1913 U1 Giacobini-Zinner 19131102.56597 0.9760050 0.7206110 171.47974 197.06942 30.73964 19131109 47 19001224 19330819 9.0 10.0 h3E1 2.2 2 2 +0.27 +0.0350 Kinoshita P 6.53 3.4933551
Earth 0.5058 19131114.5
21P Giacobini-Zinner *19200518.89257 0.9799902 0.7199368 171.53535 197.01986 30.70950 19200605 47 19001224 19330819 9.0 10.0 h3E1 2.2 x 2 +0.27 +0.0350 Kinoshita P 6.55 3.4991753
21P Giacobini-Zinner 19261211.70594 0.9937338 0.7170018 171.74787 196.94551 30.73108 19261231 47 19001224 19330819 9.0 10.0 h3E1 2.2 3 2 +0.27 +0.0350 Kinoshita P 6.58 3.5114492
21P Giacobini-Zinner 19330715.14910 0.9995231 0.7159899 171.76700 196.94607 30.67785 19330727 76 19330615 19600418 9.0 10.0 h3E1 1.2 4 2 +0.27 +0.0385 Kinoshita P 6.60 3.5193225
21P Giacobini-Zinner 19400217.20987 0.9956024 0.7167010 171.78738 196.95287 30.73531 19400221 76 19330615 19600418 9.0 10.0 h3E1 1.2 5 2 +0.27 +0.0385 Kinoshita P 6.59 3.5143171
21P Giacobini-Zinner 19460918.48625 0.9957050 0.7166759 171.80562 196.99635 30.72081 19460917 76 19330615 19600418 9.0 10.0 h3E1 1.2 6 2 +0.27 +0.0385 Kinoshita P 6.59 3.5143676
Earth 0.2577 19460920.0
21P Giacobini-Zinner *19530416.80141 0.9886868 0.7178988 171.88055 196.94255 30.81851 19530413 44 19460925 19650925 9.0 10.0 h3E1 1.1 x 2 -0.04 +0.1378 Kinoshita P 6.56 3.5047235
Jupiter 0.9270 19580119.5
21P Giacobini-Zinner 19591026.91835 0.9359623 0.7289707 172.83901 196.73257 30.89786 19591108 44 19460925 19650925 9.0 10.0 h3E1 1.1 7 2 -0.04 +0.1378 Kinoshita P 6.42 3.4533622
Earth 0.3519 19591108.5
21P Giacobini-Zinner 19660328.27857 0.9335049 0.7294022 172.91315 196.66816 30.93829 19660316 1091 19650917 19860208 9.0 10.0 h3E2 1.1 8 2 +0.30 -0.0479 Kinoshita P 6.41 3.4497873
Jupiter 0.5769 19690923.75
21P Giacobini-Zinner 19720804.88497 0.9940168 0.7150713 171.89933 195.83407 31.70357 19720722 1091 19650917 19860208 9.0 10.0 h3E2 1.1 9 2 +0.30 -0.0479 Kinoshita P 6.52 3.4886506
21P Giacobini-Zinner 19790212.75354 0.9960546 0.7146366 171.96611 195.77235 31.69439 19790216 1091 19650917 19860208 9.0 10.0 h3E2 1.1 10 2 +0.30 -0.0479 Kinoshita P 6.52 3.4904775
21P Giacobini-Zinner 19850905.20618 1.0282679 0.7074951 172.48031 195.40858 31.87259 19850912 1534 19850413 19990430 9.0 10.0 h3E1 1.0 11 2 +0.36 +0.0399 Kinoshita P 6.59 3.5153875
Earth 0.4672 19850905.75
21P Giacobini-Zinner 19920413.22832 1.0340271 0.7064862 172.51686 195.38367 31.82209 19920408 907 19910216 20060326 9.0 17.5 h3E2 0.8 12 2 +0.24 -0.0740 Kinoshita P 6.61 3.5229244
21P Giacobini-Zinner 19981121.31976 1.0337349 0.7064760 172.54295 195.39778 31.85897 19981103 907 19910216 20060326 9.0 17.5 h3E2 0.8 13 2 +0.24 -0.0740 Kinoshita P 6.61 3.5218064
21P Giacobini-Zinner 20050702.76015 1.0379201 0.7056868 172.54267 195.42942 31.81118 20050709 1098 19980120 20120119 9.0 17.5 h3E2 0.8 14 2 +0.14 -0.0985 Kinoshita P 6.62 3.5265837
21P Giacobini-Zinner 20120211.73316 1.0305338 0.7070348 172.60110 195.39579 31.91088 20120203 2210 20050305 20180812 10.0 17.5 h3E2 0.6 15 2 -0.03 -0.1245 Kinoshita P 6.60 3.5175974
21P Giacobini-Zinner 20180910.27738 1.0128269 0.7104603 172.86052 195.39183 31.99831 20180830 2472 20110806 20190411 9.0 20.0 h3E4 0.9 16 2 +0.30 -0.1271 Kinoshita P 6.54 3.4980591
Earth 0.3918 20180910.6
21P Giacobini-Zinner *20250325.42544 1.0089575 0.7110286 172.93389 195.33195 32.05084 20250326 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.52 3.4915472
Jupiter 0.3644 20290214.1
21P Giacobini-Zinner *20310830.31254 1.0692381 0.6992549 170.83939 194.43461 31.66700 20310911 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.70 3.5552971
Earth 0.5499 20310904.1
21P Giacobini-Zinner *20380516.42873 1.0709445 0.6989016 170.90833 194.36683 31.66399 20380517 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.71 3.5567922
21P Giacobini-Zinner *20450210.89177 1.0994131 0.6928089 171.33160 194.08160 31.77828 20450301 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.77 3.5789226
21P Giacobini-Zinner *20511124.65105 1.1057863 0.6917670 171.36247 194.06832 31.72610 20511105 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.79 3.5875019
21P Giacobini-Zinner *20580906.42256 1.1018554 0.6923842 171.38192 194.07547 31.78100 20580820 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.78 3.5819212
Earth 0.4365 20580914.8
21P Giacobini-Zinner *20650614.74860 1.1003472 0.6925796 171.41041 194.12033 31.77613 20650604 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.77 3.5792910
21P Giacobini-Zinner *20720321.49908 1.0941610 0.6935764 171.53506 194.04961 31.87066 20720319 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.75 3.5707471
Jupiter 0.2391 20760810.8
21P Giacobini-Zinner *20781019.67174 0.9730360 0.7258340 171.93511 192.24137 27.93883 20781014 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.69 3.5490757
Earth 0.3207 20781101.3
21P Giacobini-Zinner *20850629.78026 0.9732630 0.7258010 172.01627 192.16931 27.94965 20850619 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.69 3.5494772
21P Giacobini-Zinner *20920321.45503 1.0133357 0.7168153 172.82411 191.37624 28.46896 20920403 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.77 3.5783559
21P Giacobini-Zinner *20990102.00550 1.0183205 0.7160162 172.87186 191.34225 28.43653 20990117 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.79 3.5858399
21P Giacobini-Zinner *21051015.66438 1.0177132 0.7160684 172.89264 191.35612 28.46672 21051102 2472 20110806 20190411 9.0 20.0 h3E4 0.9 x 2 +0.30 -0.1271 Kinoshita P 6.79 3.5843607
Earth 0.2614 21051024.4
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