메타데이터
| 항목 |
값 |
| Designation |
127P/Holt-Olmstead |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-03-17T19:51:44.164800Z |
| Orbit solution date (soln_date, UTC) |
2024-09-03T09:11:00Z |
| Obs used |
909 |
| NEO |
- |
| M1 |
10.500 |
| K1 |
20.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-09-02.0000000 |
| e |
0.36073296 |
| q (au) |
2.205847 |
| a (au) |
3.450587 |
| i (deg) |
14.302120 |
| Ω (om, deg) |
13.650998 |
| ω (w, deg) |
6.713930 |
| M (ma, deg) |
329.580545 |
밝기
산란 + 전체 선형
$$
M_a = (11.434 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.434 |
| n |
6.000 |
| gf |
0.984 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.814 |
| 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) |
| 2026-05-12 00:00 |
13:43:55.61 |
-17:55:19.1 |
HIP 67060 |
8.54 |
| 2026-05-12 12:00 |
13:43:36.84 |
-17:54:02.9 |
HIP 67060 |
13.14 |
| 2026-05-13 00:00 |
13:43:18.20 |
-17:52:46.7 |
HIP 67060 |
17.73 |
| 2026-05-13 12:00 |
13:42:59.69 |
-17:51:30.7 |
HIP 67060 |
22.30 |
| 2026-05-14 00:00 |
13:42:41.33 |
-17:50:14.7 |
HIP 66749 |
26.46 |
| 2026-05-14 12:00 |
13:42:23.10 |
-17:48:58.9 |
HIP 66749 |
22.03 |
| 2026-05-15 00:00 |
13:42:05.02 |
-17:47:43.3 |
HIP 66749 |
17.68 |
| 2026-05-15 12:00 |
13:41:47.08 |
-17:46:27.9 |
HIP 66749 |
13.46 |
| 2026-05-16 00:00 |
13:41:29.30 |
-17:45:12.7 |
HIP 66749 |
9.47 |
| 2026-05-16 12:00 |
13:41:11.66 |
-17:43:57.7 |
HIP 66749 |
6.14 |
| 2026-05-17 00:00 |
13:40:54.18 |
-17:42:42.9 |
HIP 66749 |
4.91 |
| 2026-05-17 12:00 |
13:40:36.86 |
-17:41:28.4 |
HIP 66749 |
6.93 |
| 2026-05-18 00:00 |
13:40:19.70 |
-17:40:14.2 |
HIP 66749 |
10.40 |
| 2026-05-18 12:00 |
13:40:02.70 |
-17:39:00.3 |
HIP 66749 |
14.29 |
| 2026-05-19 00:00 |
13:39:45.87 |
-17:37:46.7 |
HIP 66749 |
18.29 |
| 2026-05-19 12:00 |
13:39:29.20 |
-17:36:33.5 |
HIP 66717 |
21.96 |
| 2026-05-20 00:00 |
13:39:12.70 |
-17:35:20.6 |
HIP 66717 |
24.07 |
| 2026-05-20 12:00 |
13:38:56.38 |
-17:34:08.1 |
HIP 66717 |
26.62 |
| 2026-05-21 00:00 |
13:38:40.22 |
-17:32:56.0 |
HIP 66717 |
29.48 |
| 2026-05-21 12:00 |
13:38:24.25 |
-17:31:44.3 |
HIP 66717 |
32.55 |
| 2026-05-22 00:00 |
13:38:08.45 |
-17:30:33.1 |
HIP 66717 |
35.77 |
| 2026-05-22 12:00 |
13:37:52.83 |
-17:29:22.3 |
HIP 66717 |
39.09 |
| 2026-05-23 00:00 |
13:37:37.40 |
-17:28:11.9 |
HIP 66717 |
42.46 |
| 2026-05-23 12:00 |
13:37:22.15 |
-17:27:02.1 |
HIP 66319 |
41.27 |
| 2026-05-24 00:00 |
13:37:07.08 |
-17:25:52.7 |
HIP 66319 |
38.12 |
| 2026-05-24 12:00 |
13:36:52.20 |
-17:24:43.9 |
HIP 66231 |
35.03 |
| 2026-05-25 00:00 |
13:36:37.51 |
-17:23:35.6 |
HIP 66231 |
31.44 |
| 2026-05-25 12:00 |
13:36:23.01 |
-17:22:27.8 |
HIP 66231 |
27.91 |
| 2026-05-26 00:00 |
13:36:08.70 |
-17:21:20.6 |
HIP 66231 |
24.46 |
| 2026-05-26 12:00 |
13:35:54.59 |
-17:20:13.9 |
HIP 66231 |
21.11 |
| 2026-05-27 00:00 |
13:35:40.67 |
-17:19:07.9 |
HIP 66231 |
17.88 |
| 2026-05-27 12:00 |
13:35:26.95 |
-17:18:02.4 |
HIP 66231 |
14.81 |
| 2026-05-28 00:00 |
13:35:13.42 |
-17:16:57.6 |
HIP 66231 |
12.00 |
| 2026-05-28 12:00 |
13:35:00.09 |
-17:15:53.4 |
HIP 66231 |
9.61 |
| 2026-05-29 00:00 |
13:34:46.97 |
-17:14:49.8 |
HIP 66231 |
7.97 |
| 2026-05-29 12:00 |
13:34:34.04 |
-17:13:46.9 |
HIP 66231 |
7.52 |
| 2026-05-30 00:00 |
13:34:21.32 |
-17:12:44.7 |
HIP 66231 |
8.40 |
| 2026-05-30 12:00 |
13:34:08.80 |
-17:11:43.2 |
HIP 66231 |
10.23 |
| 2026-05-31 00:00 |
13:33:56.48 |
-17:10:42.3 |
HIP 66231 |
12.56 |
| 2026-05-31 12:00 |
13:33:44.38 |
-17:09:42.2 |
HIP 66231 |
15.13 |
| 2026-06-01 00:00 |
13:33:32.48 |
-17:08:42.8 |
HIP 66231 |
17.81 |
| 2026-06-01 12:00 |
13:33:20.78 |
-17:07:44.1 |
HIP 66231 |
20.53 |
| 2026-06-02 00:00 |
13:33:09.30 |
-17:06:46.2 |
HIP 66231 |
23.27 |