MPC
CBAT
ICQ
C/2007 JA21 (LINEAR) Epoch 2006 Nov. 1.0 TT = JDT 2454040.5 T 2006 Nov. 14.3813 TT MPC q 5.368174 (2000.0) P Q z -0.000426 Peri. 93.6987 -0.0292595 -0.4133137 +/-0.000005 Node 65.5222 -0.4497578 -0.8076890 e 1.002288 Incl. 89.8404 +0.8926712 -0.4204882 From 137 observations 2007 May 11-2008 Apr. 4, mean residual 0".6.Elements are also available for the current standard epoch:
C/2007 JA21 (LINEAR) Epoch 2008 May 14.0 TT = JDT 2454600.5 T 2006 Nov. 14.7438 TT MPC q 5.369806 (2000.0) P Q z -0.000268 Peri. 93.7521 -0.0296691 -0.4132531 +/-0.000005 Node 65.5242 -0.4504999 -0.8072834 e 1.001438 Incl. 89.8387 +0.8922833 -0.4213258An explanation of the orbital elements is available.
These orbital elements are also available in forms suitable for loading into a number of popular planetarium-type software programs.
Personalized ephemerides for this (and other) objects may be generated using the Minor Planet & Comet Ephemeris Service.
Recent magnitude estimates for this comet (as reported to the ICQ) may be available.
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2WARNING! 2008 04 14 17 07.69 +17 09.7 5.998 6.558 120.0 7.6 20.1 2008 04 19 17 05.14 +17 11.9 5.966 6.578 123.8 7.3 20.1 2008 04 24 17 02.35 +17 12.5 5.940 6.598 127.3 7.0 20.1 2008 04 29 16 59.35 +17 11.2 5.918 6.619 130.7 6.6 20.1 2008 05 04 16 56.14 +17 07.8 5.902 6.639 133.8 6.3 20.1 2008 05 09 16 52.77 +17 02.0 5.891 6.660 136.5 6.0 20.1 2008 05 14 16 49.26 +16 53.7 5.887 6.681 138.8 5.7 20.1 2008 05 19 16 45.67 +16 42.8 5.890 6.702 140.5 5.5 20.1 2008 05 24 16 42.01 +16 29.2 5.900 6.723 141.6 5.4 20.1 2008 05 29 16 38.34 +16 13.0 5.916 6.744 142.0 5.3 20.1 2008 06 03 16 34.68 +15 54.0 5.940 6.765 141.7 5.3 20.2 2008 06 08 16 31.08 +15 32.5 5.970 6.786 140.7 5.4 20.2 2008 06 13 16 27.58 +15 08.5 6.008 6.808 139.1 5.6 20.2 2008 06 18 16 24.20 +14 42.1 6.053 6.829 136.8 5.8 20.3 2008 06 23 16 20.98 +14 13.5 6.104 6.851 134.2 6.1 20.3 2008 06 28 16 17.94 +13 43.0 6.161 6.873 131.1 6.4 20.3 2008 07 03 16 15.11 +13 10.7 6.225 6.894 127.8 6.7 20.4 2008 07 08 16 12.50 +12 36.9 6.294 6.916 124.2 7.0 20.4 2008 07 13 16 10.13 +12 01.7 6.368 6.938 120.4 7.3 20.4 2008 07 18 16 08.01 +11 25.4 6.447 6.960 116.5 7.5 20.5 2008 07 23 16 06.15 +10 48.3 6.531 6.982 112.5 7.7 20.5 2008 07 28 16 04.56 +10 10.6 6.618 7.004 108.4 7.9 20.6 2008 08 02 16 03.22 +09 32.4 6.708 7.027 104.2 8.0 20.6 2008 08 07 16 02.15 +08 53.9 6.801 7.049 100.1 8.1 20.6 2008 08 12 16 01.33 +08 15.4 6.896 7.071 95.9 8.2 20.7 2008 08 17 16 00.77 +07 36.9 6.992 7.094 91.7 8.2 20.7 2008 08 22 16 00.45 +06 58.7 7.089 7.116 87.4 8.2 20.8 2008 08 27 16 00.36 +06 20.8 7.187 7.139 83.2 8.1 20.8 2008 09 01 16 00.51 +05 43.3 7.285 7.162 79.0 8.0 20.9 2008 09 06 16 00.86 +05 06.5 7.382 7.185 74.8 7.8 20.9 2008 09 11 16 01.43 +04 30.3 7.478 7.207 70.7 7.6 20.9 2008 09 16 16 02.18 +03 54.8 7.572 7.230 66.5 7.3 21.0 2008 09 21 16 03.12 +03 20.1 7.664 7.253 62.4 7.0 21.0 2008 09 26 16 04.22 +02 46.3 7.753 7.276 58.3 6.7 21.1 2008 10 01 16 05.49 +02 13.4 7.840 7.299 54.2 6.4 21.1 2008 10 06 16 06.89 +01 41.4 7.922 7.323 50.2 6.0 21.1 2008 10 11 16 08.43 +01 10.4 8.001 7.346 46.2 5.6 21.2 2008 10 16 16 10.09 +00 40.4 8.076 7.369 42.3 5.2 21.2 2008 10 21 16 11.85 +00 11.5 8.146 7.393 38.5 4.8 21.2 2008 10 26 16 13.70 -00 16.4 8.211 7.416 34.7 4.4 21.3 2008 10 31 16 15.64 -00 43.2 8.271 7.440 31.2 4.0 21.3 2008 11 05 16 17.65 -01 08.9 8.326 7.463 27.8 3.6 21.3 2008 11 10 16 19.72 -01 33.4 8.375 7.487 24.8 3.2 21.4 2008 11 15 16 21.82 -01 56.9 8.417 7.510 22.1 2.8 21.4 2008 11 20 16 23.96 -02 19.3 8.454 7.534 20.1 2.6 21.4 2008 11 25 16 26.12 -02 40.6 8.485 7.558 18.9 2.4 21.4 2008 11 30 16 28.28 -03 00.8 8.510 7.582 18.6 2.4 21.4 2008 12 05 16 30.44 -03 19.8 8.528 7.606 19.4 2.5 21.5 2008 12 10 16 32.58 -03 37.8 8.540 7.630 21.2 2.7 21.5 2008 12 15 16 34.68 -03 54.8 8.545 7.654 23.6 3.0 21.5 2008 12 20 16 36.74 -04 10.6 8.545 7.678 26.6 3.3 21.5 2008 12 25 16 38.74 -04 25.5 8.538 7.702 30.0 3.7 21.5 2008 12 30 16 40.67 -04 39.3 8.525 7.726 33.7 4.0 21.5 2009 01 04 16 42.51 -04 52.2 8.507 7.750 37.5 4.4 21.5 2009 01 09 16 44.26 -05 04.1 8.483 7.774 41.6 4.8 21.5 2009 01 14 16 45.90 -05 15.1 8.453 7.799 45.7 5.2 21.6 2009 01 19 16 47.42 -05 25.3 8.419 7.823 50.0 5.5 21.6 2009 01 24 16 48.80 -05 34.6 8.380 7.847 54.4 5.9 21.6 2009 01 29 16 50.04 -05 43.1 8.337 7.872 58.8 6.1 21.6 2009 02 03 16 51.11 -05 51.0 8.290 7.896 63.3 6.4 21.6 2009 02 08 16 52.02 -05 58.1 8.240 7.921 67.9 6.6 21.6 2009 02 13 16 52.75 -06 04.6 8.186 7.945 72.5 6.8 21.6 2009 02 18 16 53.29 -06 10.5 8.131 7.970 77.2 6.9 21.6 2009 02 23 16 53.62 -06 16.0 8.074 7.995 81.9 7.0 21.6 2009 02 28 16 53.76 -06 21.0 8.015 8.019 86.7 7.1 21.6 2009 03 05 16 53.67 -06 25.7 7.956 8.044 91.5 7.1 21.6 2009 03 10 16 53.37 -06 30.0 7.898 8.069 96.4 7.0 21.6 2009 03 15 16 52.85 -06 34.2 7.840 8.094 101.3 6.9 21.6 2009 03 20 16 52.10 -06 38.2 7.783 8.118 106.3 6.8 21.6 2009 03 25 16 51.13 -06 42.1 7.728 8.143 111.3 6.6 21.5 2009 03 30 16 49.94 -06 46.0 7.677 8.168 116.3 6.3 21.5 2009 04 04 16 48.52 -06 50.1 7.628 8.193 121.3 6.0 21.5 2009 04 09 16 46.90 -06 54.2 7.584 8.218 126.4 5.6 21.5 2009 04 14 16 45.09 -06 58.6 7.544 8.243 131.5 5.2 21.5 2009 04 19 16 43.08 -07 03.3 7.510 8.268 136.5 4.8 21.6 2009 04 24 16 40.90 -07 08.3 7.482 8.293 141.6 4.3 21.6 2009 04 29 16 38.57 -07 13.8 7.460 8.318 146.5 3.8 21.6 2009 05 04 16 36.11 -07 19.7 7.444 8.343 151.4 3.3 21.6 2009 05 09 16 33.54 -07 26.1 7.436 8.369 156.0 2.8 21.6 2009 05 14 16 30.88 -07 33.1 7.436 8.394 160.2 2.3 21.6 2009 05 19 16 28.16 -07 40.7 7.443 8.419 163.7 1.9 21.6This comet gets close to the sun during the period covered in the ephemeris below. Observers are warned to be wary of observing comets near the sun. NEVER point any kind of optical instrument at the sun--instant blindness will be the probable result.
