Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.098277E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-22T03:34:44+0800
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    1 Object 1

    Name NOAA 18
    AOE ID 28654
    NORAD ID 28654
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 63919
    NORAD ID 63919
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter NOAA 18 YAOGAN-40 02B
    Time of Closest Approach 2026-10-22T05:08:29+0000
    Collision Probability (Pc) 2.098277E-5
    Conjunction Distance (km) 1.045 km
    Relative Speed (km/s) 12.723 km/s
    Conjunction Risk Parameters R (Radial): 0.144 | I (In-track): -0.535 | C (Cross-track): 0.886
    Collision Risk Index (CRI) 0.61
    X Position (km) -269.812 -270.142
    Position Y (km) 1075.192 1074.24
    Position Z (km) -7152.502 -7152.778
    Velocity X (km/s) 7.217 -4.873
    Velocity Y (km/s) 1.67 5.491
    Velocity Z (km/s) -0.031 1.009

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 18 YAOGAN-40 02B
    Semimajor Axis (a) 7224.707 km 7229.075 km
    Eccentricity (e) 0.001485 0.000213
    Inclination (i) 98.8028° 85.9914°
    RAAN 12.1015° 131.5725°
    Perigee Argument 149.2069° 93.6876°
    Mean Anomaly (M) 210.9977° 266.4550°
    Apogee 857.296 km 852.477 km
    Perigee 835.844 km 849.399 km
    Orbit Epoch 2026-10-21T07:29:14+0000 2026-10-21T00:37:36+0000

    NOAA 18 & YAOGAN-40 02B Collision Probability (Pc) Trend

    NOAA 18 & YAOGAN-40 02B Collision Probability (Pc) TrendNot Available

    NOAA 18 & YAOGAN-40 02B Miss Distance (Miss Distance) Trend

    NOAA 18 & YAOGAN-40 02B Miss Distance (Miss Distance) TrendNot Available

    NOAA 18Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    YAOGAN-40 02BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 18Collision Probability Trend

    Object 1 Probability TrendNot Available

    YAOGAN-40 02BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 18

    No nearby objects data