Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.417276E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-22T13:09:21+0800
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    1 Object 1

    Name NOAA 15
    AOE ID 25338
    NORAD ID 25338
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 41335
    NORAD ID 41335
    Object Type PAYLOAD
    Country
    ESA ESA

    Conjunction Constraints

    Parameter NOAA 15 SENTINEL 3A
    Time of Closest Approach 2026-10-23T01:57:20+0000
    Collision Probability (Pc) 1.417276E-6
    Conjunction Distance (km) 2.131 km
    Relative Speed (km/s) 6.039 km/s
    Conjunction Risk Parameters R (Radial): 1.569 | I (In-track): -1.316 | C (Cross-track): 0.59
    Collision Risk Index (CRI) 0.38
    X Position (km) -431.057 -432.292
    Position Y (km) -1087.242 -1086.446
    Position Z (km) 7077.984 7076.441
    Velocity X (km/s) -5.147 -7.437
    Velocity Y (km/s) 5.362 -0.137
    Velocity Z (km/s) 0.516 -0.474

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 15 SENTINEL 3A
    Semimajor Axis (a) 7179.319 km 7180.779 km
    Eccentricity (e) 0.000981 0.000132
    Inclination (i) 98.5025° 98.6234°
    RAAN 312.1291° 0.0050°
    Perigee Argument 342.1611° 98.1467°
    Mean Anomaly (M) 17.9224° 261.9863°
    Apogee 808.228 km 803.587 km
    Perigee 794.136 km 801.697 km
    Orbit Epoch 2026-10-21T22:37:58+0000 2026-10-21T10:48:24+0000

    NOAA 15 & SENTINEL 3A Collision Probability (Pc) Trend

    NOAA 15 & SENTINEL 3A Collision Probability (Pc) TrendNot Available

    NOAA 15 & SENTINEL 3A Miss Distance (Miss Distance) Trend

    NOAA 15 & SENTINEL 3A Miss Distance (Miss Distance) TrendNot Available

    NOAA 15Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SENTINEL 3AMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 15Collision Probability Trend

    Object 1 Probability TrendNot Available

    SENTINEL 3ACollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 15

    No nearby objects data