메타데이터
| 항목 |
값 |
| Designation |
C/1995 Q2 (Hartley-Drinkwater) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1995-08-02T17:27:23.549760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:47Z |
| Obs used |
123 |
| NEO |
- |
| M1 |
9.700 |
| K1 |
22.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1995-09-06.0000000 |
| e |
0.96649288 |
| q (au) |
1.889143 |
| a (au) |
56.380355 |
| i (deg) |
168.007513 |
| Ω (om, deg) |
300.750783 |
| ω (w, deg) |
314.000279 |
| M (ma, deg) |
0.079792 |
밝기
산란 + 전체 선형
$$
M_a = (13.335 + 4.533\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.335 |
| n |
4.533 |
| gf |
1.000 |
| gb |
-0.557 |
| k |
0.869 |
| δ90 |
9.998 |
| 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) |
| 2026-06-01 00:00 |
12:26:51.24 |
+08:50:54.0 |
HIP 60754 |
7.81 |
| 2026-06-01 12:00 |
12:26:50.10 |
+08:50:54.3 |
HIP 60754 |
7.91 |
| 2026-06-02 00:00 |
12:26:48.98 |
+08:50:54.5 |
HIP 60754 |
8.03 |
| 2026-06-02 12:00 |
12:26:47.87 |
+08:50:54.5 |
HIP 60754 |
8.15 |
| 2026-06-03 00:00 |
12:26:46.78 |
+08:50:54.4 |
HIP 60754 |
8.28 |
| 2026-06-03 12:00 |
12:26:45.71 |
+08:50:54.2 |
HIP 60754 |
8.41 |
| 2026-06-04 00:00 |
12:26:44.65 |
+08:50:53.8 |
HIP 60754 |
8.55 |
| 2026-06-04 12:00 |
12:26:43.62 |
+08:50:53.3 |
HIP 60754 |
8.70 |
| 2026-06-05 00:00 |
12:26:42.60 |
+08:50:52.7 |
HIP 60754 |
8.85 |
| 2026-06-05 12:00 |
12:26:41.60 |
+08:50:51.9 |
HIP 60754 |
9.00 |
| 2026-06-06 00:00 |
12:26:40.62 |
+08:50:51.0 |
HIP 60754 |
9.16 |
| 2026-06-06 12:00 |
12:26:39.65 |
+08:50:50.0 |
HIP 60754 |
9.32 |
| 2026-06-07 00:00 |
12:26:38.71 |
+08:50:48.8 |
HIP 60754 |
9.48 |
| 2026-06-07 12:00 |
12:26:37.78 |
+08:50:47.5 |
HIP 60754 |
9.64 |
| 2026-06-08 00:00 |
12:26:36.87 |
+08:50:46.0 |
HIP 60754 |
9.81 |
| 2026-06-08 12:00 |
12:26:35.98 |
+08:50:44.5 |
HIP 60754 |
9.97 |
| 2026-06-09 00:00 |
12:26:35.11 |
+08:50:42.7 |
HIP 60754 |
10.14 |
| 2026-06-09 12:00 |
12:26:34.26 |
+08:50:40.9 |
HIP 60754 |
10.31 |
| 2026-06-10 00:00 |
12:26:33.42 |
+08:50:38.9 |
HIP 60754 |
10.48 |
| 2026-06-10 12:00 |
12:26:32.61 |
+08:50:36.8 |
HIP 60754 |
10.64 |
| 2026-06-11 00:00 |
12:26:31.81 |
+08:50:34.5 |
HIP 60754 |
10.81 |
| 2026-06-11 12:00 |
12:26:31.03 |
+08:50:32.1 |
HIP 60754 |
10.97 |
| 2026-06-12 00:00 |
12:26:30.27 |
+08:50:29.6 |
HIP 60754 |
11.14 |
| 2026-06-12 12:00 |
12:26:29.53 |
+08:50:27.0 |
HIP 60754 |
11.30 |
| 2026-06-13 00:00 |
12:26:28.81 |
+08:50:24.2 |
HIP 60754 |
11.46 |
| 2026-06-13 12:00 |
12:26:28.11 |
+08:50:21.3 |
HIP 60754 |
11.63 |
| 2026-06-14 00:00 |
12:26:27.42 |
+08:50:18.2 |
HIP 60754 |
11.79 |
| 2026-06-14 12:00 |
12:26:26.76 |
+08:50:15.0 |
HIP 60754 |
11.94 |
| 2026-06-15 00:00 |
12:26:26.11 |
+08:50:11.7 |
HIP 60754 |
12.10 |
| 2026-06-15 12:00 |
12:26:25.49 |
+08:50:08.3 |
HIP 60754 |
12.25 |
| 2026-06-16 00:00 |
12:26:24.88 |
+08:50:04.7 |
HIP 60754 |
12.41 |
| 2026-06-16 12:00 |
12:26:24.29 |
+08:50:01.0 |
HIP 60754 |
12.56 |
| 2026-06-17 00:00 |
12:26:23.72 |
+08:49:57.1 |
HIP 60754 |
12.71 |
| 2026-06-17 12:00 |
12:26:23.17 |
+08:49:53.2 |
HIP 60754 |
12.85 |
| 2026-06-18 00:00 |
12:26:22.64 |
+08:49:49.1 |
HIP 60754 |
13.00 |
| 2026-06-18 12:00 |
12:26:22.13 |
+08:49:44.8 |
HIP 60754 |
13.14 |
| 2026-06-19 00:00 |
12:26:21.63 |
+08:49:40.5 |
HIP 60754 |
13.28 |
| 2026-06-19 12:00 |
12:26:21.16 |
+08:49:36.0 |
HIP 60754 |
13.42 |
| 2026-06-20 00:00 |
12:26:20.70 |
+08:49:31.4 |
HIP 60754 |
13.55 |
| 2026-06-20 12:00 |
12:26:20.27 |
+08:49:26.7 |
HIP 60754 |
13.69 |
| 2026-06-21 00:00 |
12:26:19.85 |
+08:49:21.8 |
HIP 60754 |
13.82 |
| 2026-06-21 12:00 |
12:26:19.46 |
+08:49:16.8 |
HIP 60754 |
13.95 |
| 2026-06-22 00:00 |
12:26:19.08 |
+08:49:11.7 |
HIP 60754 |
14.07 |