Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.347357E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T06:44:37+0800
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    1 Object 1

    Name SDS-4
    AOE ID 38339
    NORAD ID 38339
    Object Type PAYLOAD
    Country
    JP JP
    VS

    2 Object 2

    AOE ID 68598
    NORAD ID 68598
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SDS-4 KUIPER-00301
    Time of Closest Approach 2026-09-16T21:37:37+0000
    Collision Probability (Pc) 1.347357E-6
    Conjunction Distance (km) 2.778 km
    Relative Speed (km/s) 12.567 km/s
    Conjunction Risk Parameters R (Radial): -2.308 | I (In-track): -0.857 | C (Cross-track): 1.286
    Collision Risk Index (CRI) 0.38
    X Position (km) 4375.974 4373.788
    Position Y (km) 511.37 510.049
    Position Z (km) -5472.008 -5470.916
    Velocity X (km/s) 5.866 -1.881
    Velocity Y (km/s) -1.025 7.242
    Velocity Z (km/s) 4.604 -0.831

    Orbital Parameters 国际轨道数据源

    Parameter SDS-4 KUIPER-00301
    Semimajor Axis (a) 7020.299 km 7018.538 km
    Eccentricity (e) 0.000725 0.000202
    Inclination (i) 98.1381° 51.9026°
    RAAN 355.0729° 115.1320°
    Perigee Argument 19.0843° 179.9481°
    Mean Anomaly (M) 341.0636° 180.1481°
    Apogee 647.255 km 641.820 km
    Perigee 637.069 km 638.982 km
    Orbit Epoch 2026-09-15T13:19:13+0000 2026-09-15T15:12:18+0000

    SDS-4 & KUIPER-00301 Collision Probability (Pc) Trend

    SDS-4 & KUIPER-00301 Collision Probability (Pc) TrendNot Available

    SDS-4 & KUIPER-00301 Miss Distance (Miss Distance) Trend

    SDS-4 & KUIPER-00301 Miss Distance (Miss Distance) TrendNot Available

    SDS-4Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    KUIPER-00301Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SDS-4Collision Probability Trend

    Object 1 Probability TrendNot Available

    KUIPER-00301Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SDS-4

    No nearby objects data