메타데이터
| 항목 |
값 |
| Designation |
110P/Hartley 3 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-12-16T16:15:29.649600Z |
| Orbit solution date (soln_date, UTC) |
2023-05-22T13:49:16Z |
| Obs used |
2416 |
| NEO |
- |
| M1 |
4.300 |
| K1 |
26.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-05-08.0000000 |
| e |
0.31628027 |
| q (au) |
2.464450 |
| a (au) |
3.604474 |
| i (deg) |
11.698362 |
| Ω (om, deg) |
287.529573 |
| ω (w, deg) |
167.395612 |
| M (ma, deg) |
178.350762 |
밝기
산란 + 전체 선형
$$
M_a = (8.184 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.184 |
| 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 |
| 2019-07-25 |
2021-01-23 |
+35.2820 |
-14.426 |
| 2021-01-23 |
2023-05-13 |
-10.1067 |
+6.783 |
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 |
21:33:02.33 |
-09:50:39.7 |
HIP 106444 |
13.70 |
| 2026-05-12 12:00 |
21:33:12.93 |
-09:48:42.7 |
HIP 106444 |
10.62 |
| 2026-05-13 00:00 |
21:33:23.35 |
-09:46:46.4 |
HIP 106444 |
7.72 |
| 2026-05-13 12:00 |
21:33:33.59 |
-09:44:50.7 |
HIP 106444 |
5.23 |
| 2026-05-14 00:00 |
21:33:43.64 |
-09:42:55.7 |
HIP 106444 |
3.88 |
| 2026-05-14 12:00 |
21:33:53.51 |
-09:41:01.3 |
HIP 106444 |
4.70 |
| 2026-05-15 00:00 |
21:34:03.20 |
-09:39:07.5 |
HIP 106444 |
6.89 |
| 2026-05-15 12:00 |
21:34:12.70 |
-09:37:14.4 |
HIP 106444 |
9.52 |
| 2026-05-16 00:00 |
21:34:22.01 |
-09:35:21.9 |
HIP 106444 |
12.28 |
| 2026-05-16 12:00 |
21:34:31.13 |
-09:33:30.1 |
HIP 106444 |
15.06 |
| 2026-05-17 00:00 |
21:34:40.06 |
-09:31:39.0 |
HIP 106444 |
17.85 |
| 2026-05-17 12:00 |
21:34:48.80 |
-09:29:48.5 |
HIP 106444 |
20.61 |
| 2026-05-18 00:00 |
21:34:57.35 |
-09:27:58.8 |
HIP 106545 |
23.03 |
| 2026-05-18 12:00 |
21:35:05.71 |
-09:26:09.8 |
HIP 106545 |
21.67 |
| 2026-05-19 00:00 |
21:35:13.87 |
-09:24:21.4 |
HIP 106545 |
20.58 |
| 2026-05-19 12:00 |
21:35:21.84 |
-09:22:33.8 |
HIP 106545 |
19.79 |
| 2026-05-20 00:00 |
21:35:29.62 |
-09:20:46.9 |
HIP 106545 |
19.32 |
| 2026-05-20 12:00 |
21:35:37.20 |
-09:19:00.7 |
HIP 106545 |
19.17 |
| 2026-05-21 00:00 |
21:35:44.59 |
-09:17:15.2 |
HIP 106693 |
19.34 |
| 2026-05-21 12:00 |
21:35:51.77 |
-09:15:30.5 |
HIP 106693 |
16.85 |
| 2026-05-22 00:00 |
21:35:58.76 |
-09:13:46.5 |
HIP 106693 |
14.41 |
| 2026-05-22 12:00 |
21:36:05.56 |
-09:12:03.3 |
HIP 106693 |
12.02 |
| 2026-05-23 00:00 |
21:36:12.15 |
-09:10:20.8 |
HIP 106693 |
9.67 |
| 2026-05-23 12:00 |
21:36:18.55 |
-09:08:39.1 |
HIP 106693 |
7.36 |
| 2026-05-24 00:00 |
21:36:24.74 |
-09:06:58.1 |
HIP 106693 |
5.10 |
| 2026-05-24 12:00 |
21:36:30.74 |
-09:05:17.9 |
HIP 106693 |
2.89 |
| 2026-05-25 00:00 |
21:36:36.53 |
-09:03:38.5 |
HIP 106693 |
0.84 |
| 2026-05-25 12:00 |
21:36:42.12 |
-09:01:59.9 |
HIP 106693 |
1.57 |
| 2026-05-26 00:00 |
21:36:47.51 |
-09:00:22.0 |
HIP 106693 |
3.62 |
| 2026-05-26 12:00 |
21:36:52.69 |
-08:58:45.0 |
HIP 106693 |
5.67 |
| 2026-05-27 00:00 |
21:36:57.67 |
-08:57:08.7 |
HIP 106693 |
7.68 |
| 2026-05-27 12:00 |
21:37:02.45 |
-08:55:33.3 |
HIP 106693 |
9.65 |
| 2026-05-28 00:00 |
21:37:07.02 |
-08:53:58.7 |
HIP 106693 |
11.58 |
| 2026-05-28 12:00 |
21:37:11.38 |
-08:52:24.8 |
HIP 106693 |
13.47 |
| 2026-05-29 00:00 |
21:37:15.54 |
-08:50:51.9 |
HIP 106800 |
13.28 |
| 2026-05-29 12:00 |
21:37:19.49 |
-08:49:19.7 |
HIP 106800 |
11.53 |
| 2026-05-30 00:00 |
21:37:23.23 |
-08:47:48.4 |
HIP 106800 |
9.85 |
| 2026-05-30 12:00 |
21:37:26.76 |
-08:46:17.9 |
HIP 106800 |
8.26 |
| 2026-05-31 00:00 |
21:37:30.08 |
-08:44:48.3 |
HIP 106800 |
6.80 |
| 2026-05-31 12:00 |
21:37:33.19 |
-08:43:19.5 |
HIP 106800 |
5.54 |
| 2026-06-01 00:00 |
21:37:36.09 |
-08:41:51.6 |
HIP 106800 |
4.61 |
| 2026-06-01 12:00 |
21:37:38.78 |
-08:40:24.5 |
HIP 106800 |
4.17 |
| 2026-06-02 00:00 |
21:37:41.25 |
-08:38:58.4 |
HIP 106800 |
4.36 |