Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    4.325012E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-25T01:16:36+0800
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    1 Object 1

    Name NOAA 4
    AOE ID 7529
    NORAD ID 7529
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 11694
    NORAD ID 11694
    Object Type PAYLOAD
    Country
    CIS CIS

    Conjunction Constraints

    Parameter NOAA 4 COSMOS 1159
    Time of Closest Approach 2026-10-26T13:57:58+0000
    Collision Probability (Pc) 4.325012E-6
    Conjunction Distance (km) 1.71 km
    Relative Speed (km/s) 14.237 km/s
    Conjunction Risk Parameters R (Radial): -0.669 | I (In-track): -0.117 | C (Cross-track): 1.569
    Collision Risk Index (CRI) 0.48
    X Position (km) 1552.569 1551.407
    Position Y (km) -3691.842 -3692.653
    Position Z (km) 6723.667 6722.711
    Velocity X (km/s) -4.844 5.548
    Velocity Y (km/s) 4.039 -3.285
    Velocity Z (km/s) 3.337 -3.07

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 4 COSMOS 1159
    Semimajor Axis (a) 7829.247 km 7842.092 km
    Eccentricity (e) 0.000891 0.001755
    Inclination (i) 102.0004° 74.0187°
    RAAN 311.1408° 144.9303°
    Perigee Argument 312.7604° 80.3730°
    Mean Anomaly (M) 75.4617° 73.0138°
    Apogee 1458.083 km 1477.719 km
    Perigee 1444.137 km 1450.191 km
    Orbit Epoch 2026-10-24T00:28:52+0000 2026-10-24T00:42:32+0000

    NOAA 4 & COSMOS 1159 Collision Probability (Pc) Trend

    NOAA 4 & COSMOS 1159 Collision Probability (Pc) TrendNot Available

    NOAA 4 & COSMOS 1159 Miss Distance (Miss Distance) Trend

    NOAA 4 & COSMOS 1159 Miss Distance (Miss Distance) TrendNot Available

    NOAA 4Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    COSMOS 1159Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 4Collision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 1159Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 4

    No nearby objects data