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) |
| 2026-03-26 00:00 |
14:15:13.97 |
-19:19:24.7 |
HIP 69615 |
42.52 |
| 2026-03-26 12:00 |
14:14:57.81 |
-19:19:12.7 |
HIP 69615 |
42.08 |
| 2026-03-27 00:00 |
14:14:41.48 |
-19:18:59.6 |
HIP 69615 |
41.97 |
| 2026-03-27 12:00 |
14:14:24.97 |
-19:18:45.4 |
HIP 69356 |
41.53 |
| 2026-03-28 00:00 |
14:14:08.29 |
-19:18:30.0 |
HIP 69356 |
37.89 |
| 2026-03-28 12:00 |
14:13:51.44 |
-19:18:13.6 |
HIP 69356 |
34.27 |
| 2026-03-29 00:00 |
14:13:34.42 |
-19:17:55.9 |
HIP 69356 |
30.70 |
| 2026-03-29 12:00 |
14:13:17.25 |
-19:17:37.2 |
HIP 69356 |
27.21 |
| 2026-03-30 00:00 |
14:12:59.91 |
-19:17:17.3 |
HIP 69356 |
23.86 |
| 2026-03-30 12:00 |
14:12:42.42 |
-19:16:56.4 |
HIP 69356 |
20.76 |
| 2026-03-31 00:00 |
14:12:24.76 |
-19:16:34.3 |
HIP 69356 |
18.03 |
| 2026-03-31 12:00 |
14:12:06.96 |
-19:16:11.1 |
HIP 69356 |
15.93 |
| 2026-04-01 00:00 |
14:11:49.01 |
-19:15:46.8 |
HIP 69290 |
13.73 |
| 2026-04-01 12:00 |
14:11:30.90 |
-19:15:21.4 |
HIP 69290 |
10.04 |
| 2026-04-02 00:00 |
14:11:12.66 |
-19:14:54.9 |
HIP 69290 |
7.02 |
| 2026-04-02 12:00 |
14:10:54.27 |
-19:14:27.3 |
HIP 69290 |
5.94 |
| 2026-04-03 00:00 |
14:10:35.74 |
-19:13:58.6 |
HIP 69290 |
7.71 |
| 2026-04-03 12:00 |
14:10:17.07 |
-19:13:28.8 |
HIP 69290 |
11.09 |
| 2026-04-04 00:00 |
14:09:58.27 |
-19:12:58.0 |
HIP 69126 |
13.79 |
| 2026-04-04 12:00 |
14:09:39.34 |
-19:12:26.1 |
HIP 69126 |
9.49 |
| 2026-04-05 00:00 |
14:09:20.28 |
-19:11:53.1 |
HIP 69126 |
5.50 |
| 2026-04-05 12:00 |
14:09:01.09 |
-19:11:19.0 |
HIP 69126 |
3.42 |
| 2026-04-06 00:00 |
14:08:41.78 |
-19:10:43.9 |
HIP 69126 |
5.93 |
| 2026-04-06 12:00 |
14:08:22.36 |
-19:10:07.8 |
HIP 69126 |
10.08 |
| 2026-04-07 00:00 |
14:08:02.81 |
-19:09:30.6 |
HIP 69126 |
14.55 |
| 2026-04-07 12:00 |
14:07:43.15 |
-19:08:52.4 |
HIP 68968 |
11.38 |
| 2026-04-08 00:00 |
14:07:23.38 |
-19:08:13.1 |
HIP 68968 |
9.42 |
| 2026-04-08 12:00 |
14:07:03.51 |
-19:07:32.8 |
HIP 68968 |
9.62 |
| 2026-04-09 00:00 |
14:06:43.53 |
-19:06:51.5 |
HIP 68968 |
11.92 |
| 2026-04-09 12:00 |
14:06:23.45 |
-19:06:09.3 |
HIP 68968 |
15.42 |
| 2026-04-10 00:00 |
14:06:03.27 |
-19:05:26.0 |
HIP 68968 |
19.51 |
| 2026-04-10 12:00 |
14:05:43.00 |
-19:04:41.7 |
HIP 68968 |
23.90 |
| 2026-04-11 00:00 |
14:05:22.63 |
-19:03:56.5 |
HIP 68968 |
28.47 |
| 2026-04-11 12:00 |
14:05:02.18 |
-19:03:10.3 |
HIP 68968 |
33.15 |
| 2026-04-12 00:00 |
14:04:41.65 |
-19:02:23.1 |
HIP 68657 |
29.26 |
| 2026-04-12 12:00 |
14:04:21.03 |
-19:01:35.0 |
HIP 68657 |
25.39 |
| 2026-04-13 00:00 |
14:04:00.34 |
-19:00:46.0 |
HIP 68657 |
21.93 |
| 2026-04-13 12:00 |
14:03:39.57 |
-18:59:56.0 |
HIP 68657 |
19.13 |
| 2026-04-14 00:00 |
14:03:18.74 |
-18:59:05.1 |
HIP 68657 |
17.31 |
| 2026-04-14 12:00 |
14:02:57.84 |
-18:58:13.4 |
HIP 68657 |
16.83 |
| 2026-04-15 00:00 |
14:02:36.87 |
-18:57:20.7 |
HIP 68657 |
17.80 |
| 2026-04-15 12:00 |
14:02:15.85 |
-18:56:27.2 |
HIP 68657 |
20.03 |
| 2026-04-16 00:00 |
14:01:54.77 |
-18:55:32.8 |
HIP 68657 |
23.17 |