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120697 (1997 HP1)
Classification: Main-belt Asteroid          SPK-ID: 2120697
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05056062252850847 5.2901e-08  
a 3.132283296258913 2.6759e-08 au
q 2.973913102864413 1.703e-07 au
i 11.72233145141445 5.6922e-06 deg
node 198.1001247986593 2.2539e-05 deg
peri 226.6976699602667 6.7188e-05 deg
M 223.1160746765964 6.8825e-05 deg
tp 2459970.409943273001
(2023-Jan-25.90994327)
0.00039298 TDB
period 2024.836582699109
5.54
2.5947e-05
7.104e-08
d
yr
n .177792125584831 2.2783e-09 deg/d
Q 3.290653489653412 2.8112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      433  
   data-arc span      8514 days (23.31 yr)  
   first obs. used      1997-04-28  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58784  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:25  

Additional Information
 Earth MOID = 1.99692 au 
 Jupiter MOID = 1.92736 au 
 T_jup = 3.179 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.24   n/a E2021B55  
diameter diameter 3.929 km 0.663 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.095   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120697 (1997 HP1)          Discovered 1997-Apr-28 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ 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
1928-Apr-30 22:18 00:03 Jupiter 1.95006657917211 1.95006576136411 1.95006739698666 4.9978420862261 4.91016436970836 2425367.429425946 2.99155286050785 258.923890036361 26.9881985689388 84.100941234066 2848971.97088498 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 17:55:27 2020-Nov-12 17:55
2011-May-06 02:05 < 00:01 Jupiter 1.94112309503395 1.94112247590372 1.94112371416418 4.9677031859914 4.87907379353514 2455687.586914781 0.268627673213928 44.5576556854329 28.8695831007406 -89.232854065355 2813922.64266163 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 17:55:27 2020-Nov-12 17:55
2021-Sep-13 03:54 < 00:01 Jupiter 1.99800681150633 1.99800610932424 1.99800751368853 3.82669710652202 3.71426214063932 2459470.662321829 0.420887250402615 55.7844831585964 27.0282489842439 -69.8805451576138 2877044.39183117 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 17:55:27 2020-Nov-12 17:55
2094-May-10 09:18 00:03 Jupiter 1.93828488846893 1.93828430301861 1.93828547391992 4.94649674661149 4.85734889613541 2486007.887368607 2.90112031326772 252.012662451615 26.4820415901917 88.6469010784926 2879554.78616507 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 17:55:27 2020-Nov-12 17:55
2177-May-15 01:44 00:06 Jupiter 1.9312412505639 1.93124048759736 1.93124201355305 4.91680681511583 4.82678048622966 2516327.572141702 5.83023034983725 503.784384192254 26.4951668919627 87.3939497898919 2840246.41699528 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 17:55:27 2020-Nov-12 17:55
2187-Sep-23 05:55 00:07 Jupiter 1.98850286309596 1.9885010269426 1.98850469927147 3.82259926118979 3.70949393803937 2520110.746550601 6.72585586173139 362.330136057526 22.8721441744649 -73.1267727953138 2678413.38291549 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 17:55:27 2020-Nov-12 17:55

Alternate Designations
 1997 HP1 = 2005 QB89 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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