Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.871001E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-26T10:40:46+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) 3.871001E-6
    Conjunction Distance (km) 1.775 km
    Relative Speed (km/s) 14.237 km/s
    Conjunction Risk Parameters R (Radial): -0.667 | I (In-track): -0.112 | C (Cross-track): 1.641
    Collision Risk Index (CRI) 0.47
    X Position (km) 1552.654 1551.438
    Position Y (km) -3691.861 -3692.719
    Position Z (km) 6723.639 6722.673
    Velocity X (km/s) -4.844 5.548
    Velocity Y (km/s) 4.038 -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 7842.091 km
    Eccentricity (e) 0.000889 0.001757
    Inclination (i) 102.0003° 74.0186°
    RAAN 312.7733° 142.8305°
    Perigee Argument 309.6226° 77.9200°
    Mean Anomaly (M) 167.3939° 338.6706°
    Apogee 1458.072 km 1477.729 km
    Perigee 1444.148 km 1450.179 km
    Orbit Epoch 2026-10-25T15:16:18+0000 2026-10-25T14:36:05+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