메타데이터
| 항목 |
값 |
| Designation |
127P/Holt-Olmstead |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-03-17T19:50:46.164480Z |
| Orbit solution date (soln_date, UTC) |
2026-06-09T12:45:51Z |
| Obs used |
912 |
| NEO |
- |
| M1 |
10.400 |
| K1 |
20.250 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-09-11.0000000 |
| e |
0.36073210 |
| q (au) |
2.205851 |
| a (au) |
3.450589 |
| i (deg) |
14.302138 |
| Ω (om, deg) |
13.650879 |
| ω (w, deg) |
6.713731 |
| M (ma, deg) |
330.964573 |
밝기
산란 + 전체 선형
$$
M_a = (11.432 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.432 |
| n |
6.000 |
| gf |
0.994 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.971 |
| 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) |
| 2026-09-20 00:00 |
14:10:06.72 |
-20:10:23.6 |
HIP 69168 |
27.86 |
| 2026-09-20 12:00 |
14:10:32.75 |
-20:12:39.9 |
HIP 69168 |
28.31 |
| 2026-09-21 00:00 |
14:10:58.87 |
-20:14:56.6 |
HIP 69168 |
30.20 |
| 2026-09-21 12:00 |
14:11:25.07 |
-20:17:13.7 |
HIP 69168 |
33.30 |
| 2026-09-22 00:00 |
14:11:51.37 |
-20:19:31.2 |
HIP 69528 |
30.91 |
| 2026-09-22 12:00 |
14:12:17.75 |
-20:21:49.1 |
HIP 69528 |
25.67 |
| 2026-09-23 00:00 |
14:12:44.22 |
-20:24:07.3 |
HIP 69528 |
21.19 |
| 2026-09-23 12:00 |
14:13:10.77 |
-20:26:26.0 |
HIP 69528 |
18.07 |
| 2026-09-24 00:00 |
14:13:37.41 |
-20:28:45.0 |
HIP 69528 |
17.09 |
| 2026-09-24 12:00 |
14:14:04.14 |
-20:31:04.5 |
HIP 69528 |
18.62 |
| 2026-09-25 00:00 |
14:14:30.95 |
-20:33:24.3 |
HIP 69528 |
22.17 |
| 2026-09-25 12:00 |
14:14:57.84 |
-20:35:44.4 |
HIP 69528 |
26.96 |
| 2026-09-26 00:00 |
14:15:24.82 |
-20:38:04.9 |
HIP 69613 |
26.92 |
| 2026-09-26 12:00 |
14:15:51.88 |
-20:40:25.8 |
HIP 69842 |
25.31 |
| 2026-09-27 00:00 |
14:16:19.02 |
-20:42:47.0 |
HIP 69842 |
18.65 |
| 2026-09-27 12:00 |
14:16:46.25 |
-20:45:08.6 |
HIP 69842 |
12.09 |
| 2026-09-28 00:00 |
14:17:13.55 |
-20:47:30.5 |
HIP 69842 |
6.05 |
| 2026-09-28 12:00 |
14:17:40.94 |
-20:49:52.8 |
HIP 69842 |
4.45 |
| 2026-09-29 00:00 |
14:18:08.41 |
-20:52:15.3 |
HIP 69844 |
9.71 |
| 2026-09-29 12:00 |
14:18:35.96 |
-20:54:38.3 |
HIP 69844 |
16.19 |
| 2026-09-30 00:00 |
14:19:03.58 |
-20:57:01.5 |
HIP 70033 |
11.44 |
| 2026-09-30 12:00 |
14:19:31.29 |
-20:59:25.1 |
HIP 70033 |
8.02 |
| 2026-10-01 00:00 |
14:19:59.07 |
-21:01:49.0 |
HIP 70033 |
9.64 |
| 2026-10-01 12:00 |
14:20:26.94 |
-21:04:13.2 |
HIP 70033 |
14.76 |
| 2026-10-02 00:00 |
14:20:54.88 |
-21:06:37.7 |
HIP 70033 |
20.96 |
| 2026-10-02 12:00 |
14:21:22.90 |
-21:09:02.5 |
HIP 70197 |
27.37 |
| 2026-10-03 00:00 |
14:21:50.99 |
-21:11:27.6 |
HIP 70197 |
24.54 |
| 2026-10-03 12:00 |
14:22:19.17 |
-21:13:53.0 |
HIP 70197 |
23.50 |
| 2026-10-04 00:00 |
14:22:47.41 |
-21:16:18.7 |
HIP 70197 |
24.50 |
| 2026-10-04 12:00 |
14:23:15.74 |
-21:18:44.7 |
HIP 70197 |
27.34 |
| 2026-10-05 00:00 |
14:23:44.13 |
-21:21:11.0 |
HIP 70535 |
28.76 |
| 2026-10-05 12:00 |
14:24:12.61 |
-21:23:37.6 |
HIP 70535 |
21.86 |
| 2026-10-06 00:00 |
14:24:41.15 |
-21:26:04.4 |
HIP 70535 |
15.10 |
| 2026-10-06 12:00 |
14:25:09.77 |
-21:28:31.5 |
HIP 70535 |
8.84 |
| 2026-10-07 00:00 |
14:25:38.46 |
-21:30:58.9 |
HIP 70535 |
5.40 |
| 2026-10-07 12:00 |
14:26:07.23 |
-21:33:26.5 |
HIP 70535 |
9.04 |
| 2026-10-08 00:00 |
14:26:36.06 |
-21:35:54.4 |
HIP 70535 |
15.37 |
| 2026-10-08 12:00 |
14:27:04.97 |
-21:38:22.6 |
HIP 70696 |
22.15 |
| 2026-10-09 00:00 |
14:27:33.94 |
-21:40:51.0 |
HIP 70696 |
18.67 |
| 2026-10-09 12:00 |
14:28:02.99 |
-21:43:19.6 |
HIP 70696 |
17.58 |
| 2026-10-10 00:00 |
14:28:32.10 |
-21:45:48.4 |
HIP 70787 |
13.84 |
| 2026-10-10 12:00 |
14:29:01.28 |
-21:48:17.5 |
HIP 70787 |
13.06 |
| 2026-10-11 00:00 |
14:29:30.53 |
-21:50:46.9 |
HIP 70787 |
15.93 |