메타데이터
| 항목 |
값 |
| Designation |
100P/Hartley 1 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-04-02T02:13:28.588800Z |
| Orbit solution date (soln_date, UTC) |
2025-07-31T12:12:40Z |
| Obs used |
644 |
| NEO |
- |
| M1 |
9.900 |
| K1 |
23.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-04-02.0000000 |
| e |
0.41375811 |
| q (au) |
2.009747 |
| a (au) |
3.428188 |
| i (deg) |
25.584071 |
| Ω (om, deg) |
37.764478 |
| ω (w, deg) |
181.874834 |
| M (ma, deg) |
303.154223 |
밝기
산란 + 전체 선형
$$
M_a = (11.868 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.868 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2022-01-26 |
2022-08-15 |
+10.8671 |
-3.807 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
04:50:11.14 |
+34:46:34.4 |
HIP 22403 |
17.63 |
| 2026-09-20 12:00 |
04:50:14.75 |
+34:49:02.1 |
HIP 22403 |
16.36 |
| 2026-09-21 00:00 |
04:50:18.09 |
+34:51:29.7 |
HIP 22403 |
15.36 |
| 2026-09-21 12:00 |
04:50:21.18 |
+34:53:57.4 |
HIP 22403 |
14.70 |
| 2026-09-22 00:00 |
04:50:24.00 |
+34:56:25.0 |
HIP 22403 |
14.41 |
| 2026-09-22 12:00 |
04:50:26.56 |
+34:58:52.6 |
HIP 22403 |
14.50 |
| 2026-09-23 00:00 |
04:50:28.85 |
+35:01:20.2 |
HIP 22403 |
14.96 |
| 2026-09-23 12:00 |
04:50:30.88 |
+35:03:47.8 |
HIP 22403 |
15.76 |
| 2026-09-24 00:00 |
04:50:32.64 |
+35:06:15.3 |
HIP 22403 |
16.84 |
| 2026-09-24 12:00 |
04:50:34.13 |
+35:08:42.8 |
HIP 22403 |
18.15 |
| 2026-09-25 00:00 |
04:50:35.35 |
+35:11:10.3 |
HIP 22403 |
19.64 |
| 2026-09-25 12:00 |
04:50:36.30 |
+35:13:37.7 |
HIP 22403 |
21.27 |
| 2026-09-26 00:00 |
04:50:36.97 |
+35:16:05.0 |
HIP 22403 |
23.00 |
| 2026-09-26 12:00 |
04:50:37.37 |
+35:18:32.3 |
HIP 22403 |
24.82 |
| 2026-09-27 00:00 |
04:50:37.49 |
+35:20:59.5 |
HIP 22403 |
26.71 |
| 2026-09-27 12:00 |
04:50:37.34 |
+35:23:26.6 |
HIP 22576 |
27.59 |
| 2026-09-28 00:00 |
04:50:36.91 |
+35:25:53.7 |
HIP 22576 |
25.38 |
| 2026-09-28 12:00 |
04:50:36.19 |
+35:28:20.6 |
HIP 22576 |
23.25 |
| 2026-09-29 00:00 |
04:50:35.20 |
+35:30:47.4 |
HIP 22576 |
21.22 |
| 2026-09-29 12:00 |
04:50:33.92 |
+35:33:14.1 |
HIP 22576 |
19.32 |
| 2026-09-30 00:00 |
04:50:32.36 |
+35:35:40.7 |
HIP 22576 |
17.60 |
| 2026-09-30 12:00 |
04:50:30.51 |
+35:38:07.1 |
HIP 22576 |
16.12 |
| 2026-10-01 00:00 |
04:50:28.38 |
+35:40:33.4 |
HIP 22576 |
14.95 |
| 2026-10-01 12:00 |
04:50:25.96 |
+35:42:59.5 |
HIP 22576 |
14.18 |
| 2026-10-02 00:00 |
04:50:23.24 |
+35:45:25.5 |
HIP 22576 |
13.87 |
| 2026-10-02 12:00 |
04:50:20.24 |
+35:47:51.3 |
HIP 22576 |
14.07 |
| 2026-10-03 00:00 |
04:50:16.95 |
+35:50:16.9 |
HIP 22576 |
14.75 |
| 2026-10-03 12:00 |
04:50:13.36 |
+35:52:42.3 |
HIP 22576 |
15.87 |
| 2026-10-04 00:00 |
04:50:09.47 |
+35:55:07.5 |
HIP 22576 |
17.34 |
| 2026-10-04 12:00 |
04:50:05.29 |
+35:57:32.5 |
HIP 22576 |
19.10 |
| 2026-10-05 00:00 |
04:50:00.82 |
+35:59:57.2 |
HIP 22576 |
21.06 |
| 2026-10-05 12:00 |
04:49:56.04 |
+36:02:21.7 |
HIP 22576 |
23.19 |
| 2026-10-06 00:00 |
04:49:50.97 |
+36:04:46.0 |
HIP 22576 |
25.46 |
| 2026-10-06 12:00 |
04:49:45.59 |
+36:07:09.9 |
HIP 22576 |
27.82 |
| 2026-10-07 00:00 |
04:49:39.91 |
+36:09:33.6 |
HIP 22576 |
30.27 |
| 2026-10-07 12:00 |
04:49:33.94 |
+36:11:57.0 |
HIP 22630 |
31.34 |
| 2026-10-08 00:00 |
04:49:27.66 |
+36:14:20.0 |
HIP 22630 |
32.59 |
| 2026-10-08 12:00 |
04:49:21.07 |
+36:16:42.8 |
HIP 22275 |
32.76 |
| 2026-10-09 00:00 |
04:49:14.18 |
+36:19:05.2 |
HIP 22275 |
30.02 |
| 2026-10-09 12:00 |
04:49:06.99 |
+36:21:27.2 |
HIP 22275 |
27.25 |
| 2026-10-10 00:00 |
04:48:59.49 |
+36:23:48.9 |
HIP 22275 |
24.46 |
| 2026-10-10 12:00 |
04:48:51.69 |
+36:26:10.2 |
HIP 22275 |
21.63 |
| 2026-10-11 00:00 |
04:48:43.58 |
+36:28:31.1 |
HIP 22275 |
18.78 |