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 |
-1.000 |
| 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) |
| 2026-05-12 00:00 |
03:14:55.63 |
+24:16:51.7 |
HIP 15057 |
12.40 |
| 2026-05-12 12:00 |
03:15:23.48 |
+24:19:21.6 |
HIP 15181 |
13.77 |
| 2026-05-13 00:00 |
03:15:51.36 |
+24:21:51.4 |
HIP 15181 |
11.07 |
| 2026-05-13 12:00 |
03:16:19.25 |
+24:24:21.3 |
HIP 15181 |
12.19 |
| 2026-05-14 00:00 |
03:16:47.17 |
+24:26:51.1 |
HIP 15181 |
16.36 |
| 2026-05-14 12:00 |
03:17:15.11 |
+24:29:20.9 |
HIP 15181 |
21.90 |
| 2026-05-15 00:00 |
03:17:43.06 |
+24:31:50.6 |
HIP 15361 |
21.35 |
| 2026-05-15 12:00 |
03:18:11.03 |
+24:34:20.3 |
HIP 15361 |
18.37 |
| 2026-05-16 00:00 |
03:18:39.02 |
+24:36:50.0 |
HIP 15361 |
17.68 |
| 2026-05-16 12:00 |
03:19:07.03 |
+24:39:19.7 |
HIP 15560 |
19.35 |
| 2026-05-17 00:00 |
03:19:35.05 |
+24:41:49.3 |
HIP 15560 |
14.95 |
| 2026-05-17 12:00 |
03:20:03.09 |
+24:44:18.9 |
HIP 15560 |
12.90 |
| 2026-05-18 00:00 |
03:20:31.14 |
+24:46:48.4 |
HIP 15560 |
14.25 |
| 2026-05-18 12:00 |
03:20:59.20 |
+24:49:17.9 |
HIP 15560 |
18.25 |
| 2026-05-19 00:00 |
03:21:27.28 |
+24:51:47.3 |
HIP 15560 |
23.60 |
| 2026-05-19 12:00 |
03:21:55.37 |
+24:54:16.7 |
HIP 15560 |
29.57 |
| 2026-05-20 00:00 |
03:22:23.47 |
+24:56:46.1 |
HIP 15861 |
29.29 |
| 2026-05-20 12:00 |
03:22:51.58 |
+24:59:15.3 |
HIP 15861 |
25.26 |
| 2026-05-21 00:00 |
03:23:19.69 |
+25:01:44.6 |
HIP 15861 |
22.63 |
| 2026-05-21 12:00 |
03:23:47.82 |
+25:04:13.7 |
HIP 15861 |
21.91 |
| 2026-05-22 00:00 |
03:24:15.96 |
+25:06:42.8 |
HIP 15861 |
23.27 |
| 2026-05-22 12:00 |
03:24:44.10 |
+25:09:11.9 |
HIP 15861 |
26.39 |
| 2026-05-23 00:00 |
03:25:12.25 |
+25:11:40.9 |
HIP 15861 |
30.75 |
| 2026-05-23 12:00 |
03:25:40.41 |
+25:14:09.8 |
HIP 16071 |
30.53 |
| 2026-05-24 00:00 |
03:26:08.57 |
+25:16:38.7 |
HIP 16071 |
29.55 |
| 2026-05-24 12:00 |
03:26:36.74 |
+25:19:07.5 |
HIP 16071 |
30.14 |
| 2026-05-25 00:00 |
03:27:04.92 |
+25:21:36.2 |
HIP 16071 |
32.20 |
| 2026-05-25 12:00 |
03:27:33.09 |
+25:24:04.9 |
HIP 16071 |
35.49 |
| 2026-05-26 00:00 |
03:28:01.27 |
+25:26:33.4 |
HIP 15980 |
39.54 |
| 2026-05-26 12:00 |
03:28:29.46 |
+25:29:02.0 |
HIP 16407 |
40.02 |
| 2026-05-27 00:00 |
03:28:57.64 |
+25:31:30.4 |
HIP 16407 |
35.17 |
| 2026-05-27 12:00 |
03:29:25.83 |
+25:33:58.8 |
HIP 16429 |
29.86 |
| 2026-05-28 00:00 |
03:29:54.02 |
+25:36:27.1 |
HIP 16429 |
23.05 |
| 2026-05-28 12:00 |
03:30:22.21 |
+25:38:55.3 |
HIP 16429 |
16.25 |
| 2026-05-29 00:00 |
03:30:50.40 |
+25:41:23.5 |
HIP 16429 |
9.49 |
| 2026-05-29 12:00 |
03:31:18.58 |
+25:43:51.6 |
HIP 16429 |
3.00 |
| 2026-05-30 00:00 |
03:31:46.77 |
+25:46:19.6 |
HIP 16429 |
4.55 |
| 2026-05-30 12:00 |
03:32:14.96 |
+25:48:47.5 |
HIP 16429 |
11.19 |
| 2026-05-31 00:00 |
03:32:43.14 |
+25:51:15.4 |
HIP 16429 |
17.95 |
| 2026-05-31 12:00 |
03:33:11.32 |
+25:53:43.2 |
HIP 16429 |
24.73 |
| 2026-06-01 00:00 |
03:33:39.50 |
+25:56:10.9 |
HIP 16429 |
31.52 |
| 2026-06-01 12:00 |
03:34:07.68 |
+25:58:38.5 |
HIP 16429 |
38.30 |
| 2026-06-02 00:00 |
03:34:35.85 |
+26:01:06.1 |
HIP 16879 |
34.87 |