"Pseudo-MPEC"
for 2009 HC82
Created Tue May 05
20:45:40 2009 using Find_Orb
2009 HC2, UNO DE LOS CUERPOS DE MAYOR MASA EN LA ESCALA DE
RIESGOS DEL JPL.
Se trata de un gran asteroide de entre 1500 y 3000 metros de diámetro, descubierto desde:
(703) Catalina Sky Survey (N32.4168 W110.7320).
Observadores S. Larson, E. Beshore, E. Christensen, R. Hill, S. Howard, D. McLean.
Mediciones astrométricas: Christensen, con el telescopio 0.68 m Schmidt + CCD.
Como se observa en sus elementos, es un objeto de tipo Apolo absolutamente retrogrado,
ya que orbita con una inclinación de sólo 5º sobre el plano de la eclíptica en
contradirección de todos los planetas y la mayoría de asteroides.
Probablemente, se trata de un antiguo cometa que, en el cálculo provisional de sólo
cinco días de arco de observación, se cruza con la órbita de la Tierra a sólo 500.000 Km.
en la longitud donde nuestro planeta se encuentra del 13 al 14 de cada mes de enero.
Por su gran masa, a fecha 5 de mayo de 2009, figura cómo objeto de riesgo con escala -2 Palermo
en el improbable encuentro del 13 de enero de 2012.
Es uno de los cuerpos de mayor masa que ha figurado en dicha escala del JPL.
Astrometry
Observing stations
Orbital elements
Residuals
Ephemeris
Astrometry:
K09H82C 2009 04 29.37373 14 47 35.950+26 07 27.10 20.4 V 703
K09H82C 2009 04 29.37976 14 47 34.760+26 07 32.40 19.6 V 703
K09H82C 2009 04 29.38584 14 47 33.540+26 07 36.20 20.1 V 703
K09H82C 2009 04 29.39188 14 47 32.350+26 07 40.60 20.4 V 703
K09H82C 2009 04 29.41843 14 47 26.800+26 07 58.40 20.0 V 703
K09H82C 2009 04 29.42484 14 47 25.540+26 08 02.10 20.3 V 703
K09H82C 2009 04 29.43117 14 47 24.100+26 08 06.50 19.7 V 703
K09H82C 2009 04 29.43764 14 47 22.810+26 08 11.30 20.3 V 703
K09H82C 2009 04 30.32488 14 44 21.760+26 17 22.30 19.6 V G96
K09H82C 2009 04 30.33573 14 44 19.530+26 17 28.50 19.6 V G96
K09H82C 2009 04 30.34517 14 44 17.590+26 17 34.50 20.2 V G96
K09H82C 2009 04 30.35452 14 44 15.640+26 17 40.20 20.1 V G96
K09H82C 2009 04 30.91077 14 42 23.100+26 23 04.90 x J41
K09H82C 2009 04 30.92510 14 42 20.060+26 23 13.10 19.8 R A13
K09H82C 2009 04 30.94197 14 42 16.720+26 23 22.00 x20.1 C J41
K09H82C 2009 04 30.94547 14 42 15.920+26 23 25.10 19.7 R A13
K09H82C 2009 05 01.32799 14 40 58.750+26 27 00.50 19.9 R 854
K09H82C 2009 05 01.33567 14 40 57.150+26 27 03.60 19.9 R 854
K09H82C 2009 05 01.34335 14 40 55.410+26 27 05.60 x19.9 R 854
K09H82C 2009 05 01.38201 14 40 47.710+26 27 30.20 20.2 V 291
K09H82C 2009 05 01.38625 14 40 46.860+26 27 32.40 20.2 V 291
K09H82C 2009 05 01.39115 14 40 45.870+26 27 35.20 20.2 V 291
K09H82C 2009 05 04.04276 14 32 01.000+26 49 05.60 J95
K09H82C 2009 05 04.04865 14 31 59.810+26 49 08.30 20.2 R J95
K09H82C 2009 05 05.19066 14 28 19.690+26 56 46.60 20.9 V 291
K09H82C 2009 05 05.19482 14 28 18.900+26 56 48.50 20.7 V 291
K09H82C 2009 05 05.19896 14 28 18.070+26 56 50.00 20.5 V 291
Station data:
(291) LPL/Spacewatch II (N31.9617 W111.5991).
(703) Catalina Sky Survey (N32.4168 W110.7320). Observers S. Larson, E.
Beshore, E. Christensen, R. Hill, S. Howard, D. McLean. Measurer E.
Christensen. 0.68 m Schmidt + CCD.
(854) Sabino Canyon Observatory, Tucson (N32.29987 W110.82005). Observer J.
E. McGaha. 0.36-m f/10.0 Schmidt-Cassegrain + CCD.
(A13) Observatoire Naef, Marly (N46.7624 E7.1394).
(G96) Mt. Lemmon Survey (N32.4425 W110.7917).
(J41) No information about station 'J41'.
(J95) Great Shefford (N51.4749 W1.4469). Observer P. Birtwhistle. 0.30-m
f/6.3 Schmidt-Cassegrain + CCD.
Orbital elements:
2009 HC82
Perihelion 2008 Nov 3.478320 TT = 11:28:46 (JD 2454773.978320)
Epoch 2009 May 5.0 TT = JDT 2454956.5 Earth MOID: 0.1308 Ve: 0.0873
M 46.51706 (2000.0) Ma: 0.0587
n 0.25485776 Peri. 297.17948 0.92071354 -0.00234646
a 2.46379255 Node 294.73838 0.07982668 -0.97770420
e 0.8088439 Incl. 154.55381 -0.38198726 -0.20997376
P 3.87 H 16.2 G 0.15 q 0.47096889 Q 4.45661621
From 24 observations 2009 Apr. 29-May 5; RMS error 0.821 arcseconds
Residuals in arcseconds:
090429 703 1.3- 2.0- 090430 G96 .33+ .28- 090501 854( 2.2- 3.4-)
090429 703 .46- .55- 090430 G96 .33+ .08+ 090501 291 .19- .07+
090429 703 .08+ .65- 090430 G96 .06- .20+ 090501 291 .04- .04-
090429 703 .90+ .12- 090430 J41( 2.5+ 1.5-) 090501 291 .02+ .09+
090429 703 .18+ .72+ 090430 A13 .74- .42+ 090504 J95 .19+ .16-
090429 703 1.1+ .34+ 090430 J41( 1.5+ 2.2-) 090504 J95 .29- .05+
090429 703 .69- .71+ 090430 A13 .59- .72+ 090505 291 .04+ .15-
090429 703 .04- 1.4+ 090501 854 .69+ .00 090505 291 .21+ .16+
090430 G96 .34+ .02+ 090501 854 .17+ 1.1- 090505 291 .20- .08+
Ephemerides (For E 0, N 40):
Date (UT) RA Dec delta r elong mag
---- -- -- ------------ ------------ ------ ------ ----- ---
2009 05 01 14 42 04.887 +26 23 56.06 1.6823 2.5270 138.5 20.2
2009 05 02 14 38 43.969 +26 33 00.36 1.6942 2.5356 138.1 20.2
2009 05 03 14 35 25.403 +26 41 17.57 1.7065 2.5442 137.7 20.3
2009 05 04 14 32 09.363 +26 48 48.53 1.7194 2.5528 137.2 20.3
2009 05 05 14 28 56.010 +26 55 34.16 1.7327 2.5613 136.6 20.3
2009 05 06 14 25 45.494 +27 01 35.48 1.7464 2.5698 136.0 20.4
2009 05 07 14 22 37.950 +27 06 53.59 1.7605 2.5783 135.4 20.4
2009 05 08 14 19 33.506 +27 11 29.61 1.7751 2.5867 134.7 20.4
2009 05 09 14 16 32.273 +27 15 24.76 1.7901 2.5951 134.0 20.4
2009 05 10 14 13 34.355 +27 18 40.27 1.8055 2.6035 133.3 20.5
2009 05 11 14 10 39.841 +27 21 17.40 1.8213 2.6119 132.5 20.5
2009 05 12 14 07 48.811 +27 23 17.46 1.8375 2.6202 131.7 20.5
2009 05 13 14 05 01.335 +27 24 41.75 1.8540 2.6285 130.9 20.6
2009 05 14 14 02 17.471 +27 25 31.60 1.8709 2.6368 130.0 20.6
2009 05 15 13 59 37.269 +27 25 48.34 1.8882 2.6450 129.1 20.6
2009 05 16 13 57 00.768 +27 25 33.30 1.9057 2.6532 128.2 20.7
2009 05 17 13 54 28.000 +27 24 47.80 1.9237 2.6614 127.3 20.7
2009 05 18 13 51 58.987 +27 23 33.15 1.9419 2.6695 126.4 20.7
2009 05 19 13 49 33.743 +27 21 50.64 1.9604 2.6777 125.5 20.8
2009 05 20 13 47 12.274 +27 19 41.56 1.9793 2.6858 124.5 20.8
2009 05 21 13 44 54.582 +27 17 07.17 1.9984 2.6938 123.6 20.8
2009 05 22 13 42 40.658 +27 14 08.69 2.0178 2.7019 122.6 20.9
2009 05 23 13 40 30.490 +27 10 47.34 2.0375 2.7099 121.7 20.9
2009 05 24 13 38 24.060 +27 07 04.30 2.0574 2.7179 120.7 20.9
2009 05 25 13 36 21.343 +27 03 00.73 2.0776 2.7258 119.7 21.0
2009 05 26 13 34 22.311 +26 58 37.76 2.0980 2.7337 118.8 21.0
2009 05 27 13 32 26.928 +26 53 56.50 2.1187 2.7416 117.8 21.0
2009 05 28 13 30 35.154 +26 48 58.03 2.1395 2.7495 116.8 21.1
2009 05 29 13 28 46.945 +26 43 43.39 2.1606 2.7574 115.8 21.1
2009 05 30 13 27 02.254 +26 38 13.58 2.1819 2.7652 114.8 21.1
2009 05 31 13 25 21.026 +26 32 29.57 2.2033 2.7730 113.9 21.1
2009 06 01 13 23 43.209 +26 26 32.28 2.2249 2.7808 112.9 21.2
2009 06 02 13 22 08.744 +26 20 22.59 2.2467 2.7885 111.9 21.2
2009 06 03 13 20 37.573 +26 14 01.33 2.2687 2.7962 110.9 21.2
2009 06 04 13 19 09.635 +26 07 29.30 2.2908 2.8039 109.9 21.3
2009 06 05 13 17 44.869 +26 00 47.23 2.3131 2.8116 109.0 21.3
2009 06 06 13 16 23.212 +25 53 55.86 2.3354 2.8192 108.0 21.3
2009 06 07 13 15 04.603 +25 46 55.83 2.3579 2.8268 107.0 21.4
2009 06 08 13 13 48.979 +25 39 47.80 2.3806 2.8344 106.1 21.4
2009 06 09 13 12 36.277 +25 32 32.36 2.4033 2.8419 105.1 21.4
2009 06 10 13 11 26.437 +25 25 10.08 2.4262 2.8495 104.1 21.4
2009 06 11 13 10 19.395 +25 17 41.49 2.4491 2.8570 103.2 21.5
2009 06 12 13 09 15.093 +25 10 07.10 2.4721 2.8645 102.2 21.5
2009 06 13 13 08 13.468 +25 02 27.38 2.4952 2.8719 101.3 21.5
2009 06 14 13 07 14.463 +24 54 42.79 2.5184 2.8793 100.3 21.5
2009 06 15 13 06 18.018 +24 46 53.75 2.5417 2.8868 99.4 21.6
2009 06 16 13 05 24.075 +24 39 00.68 2.5650 2.8941 98.4 21.6
2009 06 17 13 04 32.578 +24 31 03.94 2.5884 2.9015 97.5 21.6
2009 06 18 13 03 43.470 +24 23 03.91 2.6118 2.9088 96.6 21.6
2009 06 19 13 02 56.698 +24 15 00.92 2.6353 2.9161 95.6 21.7
2009 06 20 13 02 12.208 +24 06 55.31 2.6588 2.9234 94.7 21.7
2009 06 21 13 01 29.946 +23 58 47.38 2.6823 2.9307 93.8 21.7
2009 06 22 13 00 49.861 +23 50 37.45 2.7058 2.9379 92.9 21.7
2009 06 23 13 00 11.900 +23 42 25.80 2.7294 2.9451 92.0 21.8
2009 06 24 12 59 36.013 +23 34 12.71 2.7530 2.9523 91.1 21.8
2009 06 25 12 59 02.149 +23 25 58.45 2.7766 2.9595 90.2 21.8
2009 06 26 12 58 30.256 +23 17 43.29 2.8001 2.9666 89.3 21.8
2009 06 27 12 58 00.286 +23 09 27.47 2.8237 2.9737 88.4 21.9
2009 06 28 12 57 32.187 +23 01 11.21 2.8473 2.9808 87.5 21.9
2009 06 29 12 57 05.912 +22 52 54.73 2.8708 2.9878 86.6 21.9
2009 06 30 12 56 41.412 +22 44 38.22 2.8943 2.9949 85.7 21.9
2009 07 01 12 56 18.642 +22 36 21.87 2.9178 3.0019 84.8 21.9
2009 07 02 12 55 57.556 +22 28 05.84 2.9412 3.0089 83.9 22.0
2009 07 03 12 55 38.110 +22 19 50.28 2.9646 3.0159 83.1 22.0
2009 07 04 12 55 20.261 +22 11 35.34 2.9880 3.0228 82.2 22.0
2009 07 05 12 55 03.968 +22 03 21.15 3.0113 3.0297 81.3 22.0
2009 07 06 12 54 49.190 +21 55 07.82 3.0346 3.0366 80.5 22.0
2009 07 07 12 54 35.890 +21 46 55.46 3.0578 3.0435 79.6 22.1
2009 07 08 12 54 24.028 +21 38 44.19 3.0809 3.0504 78.8 22.1
2009 07 09 12 54 13.570 +21 30 34.08 3.1040 3.0572 77.9 22.1
2009 07 10 12 54 04.479 +21 22 25.24 3.1270 3.0640 77.1 22.1
2009 07 11 12 53 56.721 +21 14 17.73 3.1499 3.0708 76.2 22.1
2009 07 12 12 53 50.264 +21 06 11.64 3.1728 3.0776 75.4 22.1
2009 07 13 12 53 45.075 +20 58 07.04 3.1955 3.0843 74.5 22.2
2009 07 14 12 53 41.123 +20 50 04.00 3.2182 3.0910 73.7 22.2
2009 07 15 12 53 38.379 +20 42 02.57 3.2408 3.0977 72.9 22.2
2009 07 16 12 53 36.813 +20 34 02.83 3.2633 3.1044 72.0 22.2
2009 07 17 12 53 36.398 +20 26 04.82 3.2857 3.1110 71.2 22.2
2009 07 18 12 53 37.105 +20 18 08.61 3.3080 3.1177 70.4 22.2
2009 07 19 12 53 38.908 +20 10 14.25 3.3302 3.1243 69.6 22.2
2009 07 20 12 53 41.781 +20 02 21.81 3.3523 3.1309 68.8 22.3
2009 07 21 12 53 45.698 +19 54 31.35 3.3742 3.1374 67.9 22.3
2009 07 22 12 53 50.632 +19 46 42.92 3.3961 3.1440 67.1 22.3
2009 07 23 12 53 56.559 +19 38 56.59 3.4178 3.1505 66.3 22.3
2009 07 24 12 54 03.453 +19 31 12.43 3.4394 3.1570 65.5 22.3
2009 07 25 12 54 11.289 +19 23 30.49 3.4608 3.1634 64.7 22.3
2009 07 26 12 54 20.041 +19 15 50.82 3.4822 3.1699 63.9 22.3
2009 07 27 12 54 29.685 +19 08 13.49 3.5034 3.1763 63.1 22.4
2009 07 28 12 54 40.197 +19 00 38.52 3.5244 3.1827 62.3 22.4
2009 07 29 12 54 51.554 +18 53 05.97 3.5453 3.1891 61.6 22.4
2009 07 30 12 55 03.734 +18 45 35.86 3.5661 3.1955 60.8 22.4
2009 07 31 12 55 16.714 +18 38 08.22 3.5867 3.2018 60.0 22.4
2009 08 01 12 55 30.474 +18 30 43.09 3.6072 3.2082 59.2 22.4
2009 08 02 12 55 44.995 +18 23 20.48 3.6275 3.2145 58.4 22.4
2009 08 03 12 56 00.255 +18 16 00.42 3.6476 3.2208 57.6 22.4
2009 08 04 12 56 16.237 +18 08 42.92 3.6676 3.2270 56.9 22.4
2009 08 05 12 56 32.922 +18 01 28.01 3.6874 3.2333 56.1 22.5
2009 08 06 12 56 50.293 +17 54 15.69 3.7071 3.2395 55.3 22.5
2009 08 07 12 57 08.332 +17 47 05.99 3.7266 3.2457 54.6 22.5
2009 08 08 12 57 27.024 +17 39 58.91 3.7459 3.2519 53.8 22.5
2009 08 09 12 57 46.353 +17 32 54.46 3.7650 3.2580 53.1 22.5
2009 08 10 12 58 06.303 +17 25 52.67 3.7840 3.2642 52.3 22.5
2009 08 11 12 58 26.860 +17 18 53.54 3.8028 3.2703 51.5 22.5
2009 08 12 12 58 48.010 +17 11 57.08 3.8214 3.2764 50.8 22.5
2009 08 13 12 59 09.738 +17 05 03.32 3.8398 3.2824 50.0 22.5
2009 08 14 12 59 32.031 +16 58 12.26 3.8581 3.2885 49.3 22.5
2009 08 15 12 59 54.876 +16 51 23.92 3.8761 3.2945 48.6 22.5
2009 08 16 13 00 18.261 +16 44 38.33 3.8940 3.3006 47.8 22.5
2009 08 17 13 00 42.171 +16 37 55.51 3.9116 3.3065 47.1 22.6
2009 08 18 13 01 06.594 +16 31 15.49 3.9291 3.3125 46.4 22.6
2009 08 19 13 01 31.517 +16 24 38.29 3.9464 3.3185 45.6 22.6
2009 08 20 13 01 56.927 +16 18 03.95 3.9634 3.3244 44.9 22.6
2009 08 21 13 02 22.811 +16 11 32.51 3.9803 3.3303 44.2 22.6
2009 08 22 13 02 49.155 +16 05 03.99 3.9970 3.3362 43.5 22.6
2009 08 23 13 03 15.945 +15 58 38.43 4.0134 3.3421 42.8 22.6
2009 08 24 13 03 43.168 +15 52 15.87 4.0296 3.3480 42.0 22.6
2009 08 25 13 04 10.811 +15 45 56.31 4.0457 3.3538 41.3 22.6
2009 08 26 13 04 38.863 +15 39 39.80 4.0615 3.3596 40.6 22.6
2009 08 27 13 05 07.309 +15 33 26.34 4.0770 3.3654 39.9 22.6
2009 08 28 13 05 36.140 +15 27 15.97 4.0924 3.3712 39.2 22.6
2009 08 29 13 06 05.342 +15 21 08.69 4.1076 3.3769 38.6 22.6
2009 08 30 13 06 34.906 +15 15 04.52 4.1225 3.3827 37.9 22.6
2009 08 31 13 07 04.820 +15 09 03.48 4.1372 3.3884 37.2 22.6
2009 09 01 13 07 35.075 +15 03 05.59 4.1516 3.3941 36.5 22.6
2009 09 02 13 08 05.660 +14 57 10.85 4.1659 3.3998 35.8 22.6
2009 09 03 13 08 36.566 +14 51 19.28 4.1799 3.4054 35.2 22.6
2009 09 04 13 09 07.783 +14 45 30.89 4.1937 3.4111 34.5 22.6
2009 09 05 13 09 39.302 +14 39 45.70 4.2073 3.4167 33.9 22.6
2009 09 06 13 10 11.116 +14 34 03.72 4.2206 3.4223 33.2 22.6
2009 09 07 13 10 43.214 +14 28 24.96 4.2337 3.4279 32.6 22.7
2009 09 08 13 11 15.590 +14 22 49.44 4.2465 3.4335 32.0 22.7
2009 09 09 13 11 48.235 +14 17 17.18 4.2591 3.4390 31.3 22.7
2009 09 10 13 12 21.141 +14 11 48.20 4.2715 3.4445 30.7 22.7
2009 09 11 13 12 54.302 +14 06 22.52 4.2837 3.4501 30.1 22.7
2009 09 12 13 13 27.708 +14 01 00.16 4.2956 3.4555 29.5 22.7
2009 09 13 13 14 01.352 +13 55 41.14 4.3072 3.4610 28.9 22.7
2009 09 14 13 14 35.227 +13 50 25.51 4.3186 3.4665 28.4 22.7
2009 09 15 13 15 09.325 +13 45 13.29 4.3298 3.4719 27.8 22.7
2009 09 16 13 15 43.637 +13 40 04.52 4.3407 3.4773 27.2 22.7
2009 09 17 13 16 18.154 +13 34 59.24 4.3513 3.4827 26.7 22.7
2009 09 18 13 16 52.869 +13 29 57.49 4.3617 3.4881 26.2 22.7
2009 09 19 13 17 27.771 +13 24 59.30 4.3719 3.4935 25.7 22.7
2009 09 20 13 18 02.852 +13 20 04.72 4.3818 3.4988 25.2 22.7
2009 09 21 13 18 38.102 +13 15 13.79 4.3915 3.5041 24.7 22.7
2009 09 22 13 19 13.514 +13 10 26.53 4.4008 3.5094 24.2 22.7
2009 09 23 13 19 49.077 +13 05 42.99 4.4100 3.5147 23.7 22.7
2009 09 24 13 20 24.783 +13 01 03.19 4.4189 3.5200 23.3 22.7
2009 09 25 13 21 00.625 +12 56 27.16 4.4275 3.5253 22.9 22.7
2009 09 26 13 21 36.593 +12 51 54.94 4.4358 3.5305 22.5 22.7
2009 09 27 13 22 12.681 +12 47 26.54 4.4439 3.5357 22.1 22.7