메타데이터
| 항목 |
값 |
| Designation |
P/2010 E2 (Jarnac) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-04-07T22:14:05.470080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
344 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-04-02.0000000 |
| e |
0.72237010 |
| q (au) |
2.398733 |
| a (au) |
8.640039 |
| i (deg) |
15.437000 |
| Ω (om, deg) |
177.899371 |
| ω (w, deg) |
8.294555 |
| M (ma, deg) |
359.770001 |
밝기
산란 + 전체 선형
$$
M_a = (11.468 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.468 |
| n |
6.000 |
| gf |
0.984 |
| 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) |
| 2026-03-26 00:00 |
01:06:32.21 |
+01:53:07.5 |
HIP 5163 |
12.69 |
| 2026-03-26 12:00 |
01:06:40.37 |
+01:53:55.7 |
HIP 5163 |
14.51 |
| 2026-03-27 00:00 |
01:06:48.55 |
+01:54:43.9 |
HIP 5163 |
16.43 |
| 2026-03-27 12:00 |
01:06:56.73 |
+01:55:32.1 |
HIP 5315 |
16.23 |
| 2026-03-28 00:00 |
01:07:04.93 |
+01:56:20.3 |
HIP 5315 |
14.05 |
| 2026-03-28 12:00 |
01:07:13.14 |
+01:57:08.5 |
HIP 5315 |
11.87 |
| 2026-03-29 00:00 |
01:07:21.36 |
+01:57:56.6 |
HIP 5315 |
9.70 |
| 2026-03-29 12:00 |
01:07:29.59 |
+01:58:44.7 |
HIP 5315 |
7.55 |
| 2026-03-30 00:00 |
01:07:37.83 |
+01:59:32.7 |
HIP 5315 |
5.44 |
| 2026-03-30 12:00 |
01:07:46.07 |
+02:00:20.7 |
HIP 5315 |
3.45 |
| 2026-03-31 00:00 |
01:07:54.33 |
+02:01:08.7 |
HIP 5315 |
1.99 |
| 2026-03-31 12:00 |
01:08:02.60 |
+02:01:56.6 |
HIP 5315 |
2.42 |
| 2026-04-01 00:00 |
01:08:10.87 |
+02:02:44.5 |
HIP 5315 |
4.19 |
| 2026-04-01 12:00 |
01:08:19.15 |
+02:03:32.4 |
HIP 5315 |
6.25 |
| 2026-04-02 00:00 |
01:08:27.44 |
+02:04:20.2 |
HIP 5315 |
8.39 |
| 2026-04-02 12:00 |
01:08:35.74 |
+02:05:07.9 |
HIP 5315 |
10.57 |
| 2026-04-03 00:00 |
01:08:44.04 |
+02:05:55.6 |
HIP 5315 |
12.76 |
| 2026-04-03 12:00 |
01:08:52.35 |
+02:06:43.3 |
HIP 5315 |
14.96 |
| 2026-04-04 00:00 |
01:09:00.66 |
+02:07:30.9 |
HIP 5315 |
17.17 |
| 2026-04-04 12:00 |
01:09:08.98 |
+02:08:18.4 |
HIP 5315 |
19.38 |
| 2026-04-05 00:00 |
01:09:17.31 |
+02:09:05.9 |
HIP 5315 |
21.60 |
| 2026-04-05 12:00 |
01:09:25.64 |
+02:09:53.3 |
HIP 5413 |
23.45 |
| 2026-04-06 00:00 |
01:09:33.98 |
+02:10:40.6 |
HIP 5510 |
21.90 |
| 2026-04-06 12:00 |
01:09:42.31 |
+02:11:27.9 |
HIP 5510 |
19.93 |
| 2026-04-07 00:00 |
01:09:50.66 |
+02:12:15.0 |
HIP 5510 |
18.02 |
| 2026-04-07 12:00 |
01:09:59.00 |
+02:13:02.2 |
HIP 5510 |
16.20 |
| 2026-04-08 00:00 |
01:10:07.35 |
+02:13:49.2 |
HIP 5510 |
14.49 |
| 2026-04-08 12:00 |
01:10:15.70 |
+02:14:36.2 |
HIP 5510 |
12.93 |
| 2026-04-09 00:00 |
01:10:24.05 |
+02:15:23.0 |
HIP 5510 |
11.60 |
| 2026-04-09 12:00 |
01:10:32.41 |
+02:16:09.8 |
HIP 5510 |
10.58 |
| 2026-04-10 00:00 |
01:10:40.76 |
+02:16:56.5 |
HIP 5510 |
9.96 |
| 2026-04-10 12:00 |
01:10:49.12 |
+02:17:43.1 |
HIP 5510 |
9.83 |
| 2026-04-11 00:00 |
01:10:57.48 |
+02:18:29.6 |
HIP 5510 |
10.19 |
| 2026-04-11 12:00 |
01:11:05.83 |
+02:19:16.0 |
HIP 5510 |
10.99 |
| 2026-04-12 00:00 |
01:11:14.19 |
+02:20:02.4 |
HIP 5510 |
12.16 |
| 2026-04-12 12:00 |
01:11:22.54 |
+02:20:48.6 |
HIP 5510 |
13.60 |
| 2026-04-13 00:00 |
01:11:30.90 |
+02:21:34.7 |
HIP 5510 |
15.22 |
| 2026-04-13 12:00 |
01:11:39.25 |
+02:22:20.7 |
HIP 5646 |
14.18 |
| 2026-04-14 00:00 |
01:11:47.60 |
+02:23:06.6 |
HIP 5646 |
11.97 |
| 2026-04-14 12:00 |
01:11:55.94 |
+02:23:52.4 |
HIP 5646 |
9.76 |
| 2026-04-15 00:00 |
01:12:04.29 |
+02:24:38.0 |
HIP 5646 |
7.56 |
| 2026-04-15 12:00 |
01:12:12.63 |
+02:25:23.6 |
HIP 5646 |
5.38 |
| 2026-04-16 00:00 |
01:12:20.96 |
+02:26:09.0 |
HIP 5646 |
3.26 |