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(2015 HD1)
Classification: Apollo [NEO]          SPK-ID: 3716436
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6454315636865992 0.00023147  
a 2.309052549239247 0.0013358 au
q .8187171517492319 6.0857e-05 au
i 5.338991331540459 0.00031111 deg
node 210.900984321896 0.00014833 deg
peri 57.74883745549569 0.0027901 deg
M 153.4298227372455 0.44428 deg
tp 2458454.294040376473
(2018-Dec-01.79404038)
1.1077 TDB
period 1281.590123461287
3.51
1.1121
0.003045
d
yr
n .2809010411438885 0.00024375 deg/d
Q 3.799387946729262 0.0021979 au
  Orbit Determination Parameters
   # obs. used (total)      53  
   data-arc span      4 days  
   first obs. used      2015-04-17  
   last obs. used      2015-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .29756  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 11:58:28  

Additional Information
 Earth MOID = .000686753 au 
 Jupiter MOID = 1.36536 au 
 T_jup = 3.267 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 27.4   n/a MPO337063  

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1918-Jul-28 23:23 4_13:24 Jupiter 1.53652240147217 1.49127266994666 1.58210906561746 3.87487704811823 3.72989989270201 2421803.474435016 6564.26417383161 2555527.14113909 212.587790465846 16.8931602279308 2262428.99236984 T 9 CATAB v2.0e-lin.ifort 2017-Nov-30 05:02:58 2018-Dec-11 16:37
2005-Sep-12 09:16 7_18:50 Earth 0.267728766056976 0.116734267855119 0.426156665756164 23.3818460718224 23.3814204317816 2453625.886319933 11210.2042507996 8031286.20746283 61.0432957768808 -13.1141664867423 140852.663051475 T 9 CATAB v2.0e-lin.ifort 2017-Nov-30 05:02:58 2018-Dec-11 16:37
2013-Sep-10 12:13 9_22:16 Jupiter 1.65035141698501 1.63902626464952 1.66167784679268 4.09328578086412 3.96591895327886 2456546.009141549 14296.3795119555 569272.276188203 215.896980449139 14.8413082477378 200754.872880149 T 9 CATAB v2.0e-lin.ifort 2017-Nov-30 05:02:58 2018-Dec-11 16:37
2015-Apr-21 08:17 < 00:01 Earth 0.00039513360407504 0.000394684987100824 0.000395582180023066 15.9668212642118 15.5387550435084 2457133.845389724 0.059237952116584 21.4195432746203 0.588172288994076 4.69760895808469 1915.52665357607 T 9 CATAB v2.0e-lin.ifort 2017-Nov-30 05:02:58 2018-Dec-11 16:37
2015-Apr-21 11:48 < 00:01 Moon 0.00185700672317275 0.00185667823270496 0.0018573353462818 16.4800229420022 16.4789520107451 2457133.991967016 0.144173207349507 29.739790495381 1.23529915008062 56.6209339088791 213261.417954699 T 9 CATAB v2.0e-lin.ifort 2017-Nov-30 05:02:58 2018-Dec-11 16:37
2106-Aug-14 21:27 06:04 Earth 0.110611155657691 0.109447068682181 0.111796376488916 13.300815097813 13.299003904771 2490486.393676715 364.177184062978 96151.1601592497 254.13313171625 52.4665251090084 68285.3701648752 T 9 CATAB v2.0e-lin.ifort 2017-Nov-30 05:02:58 2018-Dec-11 16:37
2108-Mar-19 19:17 4_14:24 Jupiter 1.36624101183565 1.35580529702691 1.37668938977172 4.35939624995102 4.21478402014782 2491069.303349315 6623.98895642743 561586.078759115 426.761981795403 24.9215356124613 176751.032230434 T 9 CATAB v2.0e-lin.ifort 2017-Nov-30 05:02:58 2018-Dec-11 16:37
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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