메타데이터
| 항목 |
값 |
| Designation |
C/1992 Q2 (Helin-Lawrence) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1993-03-15T02:37:57.362880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:43Z |
| Obs used |
86 |
| NEO |
- |
| M1 |
6.000 |
| K1 |
15.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1993-02-15.0000000 |
| e |
0.96541828 |
| q (au) |
2.038458 |
| a (au) |
58.946112 |
| i (deg) |
106.848257 |
| Ω (om, deg) |
194.667114 |
| ω (w, deg) |
268.852796 |
| M (ma, deg) |
359.938782 |
밝기
산란 + 전체 선형
$$
M_a = (8.372 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.372 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.705 |
| k |
0.800 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
13:51:08.15 |
+65:34:34.6 |
HIP 67756 |
10.96 |
| 2026-03-26 12:00 |
13:51:03.33 |
+65:34:53.5 |
HIP 67756 |
11.37 |
| 2026-03-27 00:00 |
13:50:58.48 |
+65:35:12.2 |
HIP 67756 |
11.80 |
| 2026-03-27 12:00 |
13:50:53.61 |
+65:35:30.5 |
HIP 67756 |
12.24 |
| 2026-03-28 00:00 |
13:50:48.72 |
+65:35:48.6 |
HIP 67756 |
12.70 |
| 2026-03-28 12:00 |
13:50:43.81 |
+65:36:06.4 |
HIP 67756 |
13.17 |
| 2026-03-29 00:00 |
13:50:38.88 |
+65:36:23.9 |
HIP 67756 |
13.65 |
| 2026-03-29 12:00 |
13:50:33.94 |
+65:36:41.1 |
HIP 67756 |
14.14 |
| 2026-03-30 00:00 |
13:50:28.97 |
+65:36:58.1 |
HIP 67756 |
14.64 |
| 2026-03-30 12:00 |
13:50:23.99 |
+65:37:14.7 |
HIP 67756 |
15.15 |
| 2026-03-31 00:00 |
13:50:19.00 |
+65:37:31.1 |
HIP 67756 |
15.67 |
| 2026-03-31 12:00 |
13:50:13.98 |
+65:37:47.2 |
HIP 67756 |
16.19 |
| 2026-04-01 00:00 |
13:50:08.95 |
+65:38:03.0 |
HIP 67756 |
16.71 |
| 2026-04-01 12:00 |
13:50:03.91 |
+65:38:18.5 |
HIP 67756 |
17.25 |
| 2026-04-02 00:00 |
13:49:58.85 |
+65:38:33.7 |
HIP 67756 |
17.78 |
| 2026-04-02 12:00 |
13:49:53.77 |
+65:38:48.7 |
HIP 67756 |
18.32 |
| 2026-04-03 00:00 |
13:49:48.68 |
+65:39:03.3 |
HIP 67756 |
18.86 |
| 2026-04-03 12:00 |
13:49:43.57 |
+65:39:17.7 |
HIP 67756 |
19.41 |
| 2026-04-04 00:00 |
13:49:38.46 |
+65:39:31.7 |
HIP 67547 |
19.91 |
| 2026-04-04 12:00 |
13:49:33.32 |
+65:39:45.5 |
HIP 67547 |
19.83 |
| 2026-04-05 00:00 |
13:49:28.18 |
+65:39:59.0 |
HIP 67547 |
19.77 |
| 2026-04-05 12:00 |
13:49:23.02 |
+65:40:12.2 |
HIP 67547 |
19.73 |
| 2026-04-06 00:00 |
13:49:17.85 |
+65:40:25.1 |
HIP 67547 |
19.71 |
| 2026-04-06 12:00 |
13:49:12.67 |
+65:40:37.6 |
HIP 67547 |
19.71 |
| 2026-04-07 00:00 |
13:49:07.48 |
+65:40:49.9 |
HIP 67547 |
19.74 |
| 2026-04-07 12:00 |
13:49:02.28 |
+65:41:01.9 |
HIP 67547 |
19.78 |
| 2026-04-08 00:00 |
13:48:57.06 |
+65:41:13.6 |
HIP 67547 |
19.85 |
| 2026-04-08 12:00 |
13:48:51.84 |
+65:41:25.0 |
HIP 67547 |
19.94 |
| 2026-04-09 00:00 |
13:48:46.61 |
+65:41:36.1 |
HIP 67547 |
20.05 |
| 2026-04-09 12:00 |
13:48:41.36 |
+65:41:46.9 |
HIP 67141 |
20.14 |
| 2026-04-10 00:00 |
13:48:36.11 |
+65:41:57.4 |
HIP 67141 |
19.57 |
| 2026-04-10 12:00 |
13:48:30.86 |
+65:42:07.6 |
HIP 67141 |
19.01 |
| 2026-04-11 00:00 |
13:48:25.59 |
+65:42:17.5 |
HIP 67141 |
18.44 |
| 2026-04-11 12:00 |
13:48:20.32 |
+65:42:27.1 |
HIP 67141 |
17.88 |
| 2026-04-12 00:00 |
13:48:15.03 |
+65:42:36.4 |
HIP 67141 |
17.31 |
| 2026-04-12 12:00 |
13:48:09.75 |
+65:42:45.4 |
HIP 67141 |
16.75 |
| 2026-04-13 00:00 |
13:48:04.45 |
+65:42:54.0 |
HIP 67141 |
16.19 |
| 2026-04-13 12:00 |
13:47:59.16 |
+65:43:02.4 |
HIP 67141 |
15.63 |
| 2026-04-14 00:00 |
13:47:53.85 |
+65:43:10.5 |
HIP 67141 |
15.07 |
| 2026-04-14 12:00 |
13:47:48.55 |
+65:43:18.2 |
HIP 67141 |
14.52 |
| 2026-04-15 00:00 |
13:47:43.23 |
+65:43:25.7 |
HIP 67141 |
13.96 |
| 2026-04-15 12:00 |
13:47:37.92 |
+65:43:32.8 |
HIP 67141 |
13.41 |
| 2026-04-16 00:00 |
13:47:32.60 |
+65:43:39.6 |
HIP 67141 |
12.86 |