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(2015 HR1)
Classification: Amor [NEO]          SPK-ID: 3716457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5662248698340511 9.2169e-05  
a 2.472819232275573 0.00054013 au
q 1.072647484357198 6.3774e-06 au
i 1.386952520285998 0.00016525 deg
node 209.3850432115625 7.1786e-05 deg
peri 34.96883107716209 0.00039491 deg
M 104.8342133862779 0.15414 deg
tp 2458586.893341558007
(2019-Apr-13.39334156)
0.47261 TDB
period 1420.322547663695
3.89
0.46535
0.001274
d
yr
n .2534635534668996 8.3045e-05 deg/d
Q 3.872990980193947 0.00084596 au
  Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      71 days  
   first obs. used      2015-04-18  
   last obs. used      2015-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .4079  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:17  

Additional Information
 Earth MOID = .0613359 au 
 Jupiter MOID = 1.16611 au 
 T_jup = 3.240 
[ 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 24.3   n/a MPO342322  
rotation period rot_per 0.0467 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Thirouin, A.; Moskovitz, N.; Binzel, R.P.; Christensen, E.; et al. (2016) Astron. J. 152, A163.]

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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
1905-Jun-05 21:10 2_13:15 Jupiter 1.87341914262486 1.80191587363917 1.9448786464693 6.22677871691347 6.15374033482584 2417002.381683784 3675.25931906244 3537110.44049517 62.5552660213556 15.6699662205426 576975.108208835 T 23 CATAB v2.0e-lin.ifort 2017-Nov-30 05:03:11 2018-Dec-11 16:37
1984-Jul-14 08:37 8_18:20 Earth 0.307224349927223 0.14163251233477 0.472840860210541 16.6883010987072 16.6877814003329 2445895.859201107 12620.2011943005 8259151.78071074 12.6640286452934 -0.904711394437185 49972.6433490726 T 23 CATAB v2.0e-lin.ifort 2017-Nov-30 05:03:11 2018-Dec-11 16:37
2015-May-15 23:45 < 00:01 Earth 0.0752476444795588 0.0752162069963606 0.0752790819268273 7.13285792601761 7.12789192183449 2457158.489238960 0.178153774580932 1565.51207678371 5.66808340541826 -0.244237627649944 5106.19602745018 T 23 CATAB v2.0e-lin.ifort 2017-Nov-30 05:03:11 2018-Dec-11 16:37
2024-Dec-24 13:56 2_14:40 Jupiter 1.80010561512274 1.78413603724522 1.8160597322968 5.30593554107551 5.21649988549392 2460669.080444019 3760.12214759375 751802.838779472 27.983166645832 12.1025944085343 752086.338748069 T 23 CATAB v2.0e-lin.ifort 2017-Nov-30 05:03:11 2018-Dec-11 16:37
2123-May-30 15:03 4_09:30 Earth 0.281557305012684 0.139637499363431 0.425015899648406 5.11518312644955 5.113332737911 2496619.127227521 6330.32503539025 7190735.97385512 14.9728066521773 7.4354496733464 215309.614051238 T 23 CATAB v2.0e-lin.ifort 2017-Nov-30 05:03:11 2018-Dec-11 16:37
2127-May-31 03:20 1_08:26 Earth 0.352943053001434 0.210392822885023 0.50287258113022 6.2721538042284 6.2709500642189 2498080.638870777 1946.41618367093 7725890.4348976 16.7537026007986 17.5597322770853 1423666.18922729 T 23 CATAB v2.0e-lin.ifort 2017-Nov-30 05:03:11 2018-Dec-11 16:37
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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