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120814 (1998 HW37)
Classification: Main-belt Asteroid          SPK-ID: 2120814
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1954655244711224 6.4308e-08  
a 2.598246789051618 1.4106e-08 au
q 2.090379117724234 1.6199e-07 au
i 3.10020815169346 4.0333e-06 deg
node 300.2331105883992 0.00011618 deg
peri 287.8861607650624 0.00011672 deg
M 85.56850630137572 1.1787e-05 deg
tp 2458636.894473162624
(2019-Jun-02.39447316)
5.0645e-05 TDB
period 1529.744941444078
4.19
1.2458e-05
3.411e-08
d
yr
n .2353333488785133 1.9165e-09 deg/d
Q 3.106114460379002 1.6863e-08 au
  Orbit Determination Parameters
   # obs. used (total)      415  
   data-arc span      9188 days (25.16 yr)  
   first obs. used      1995-08-22  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .611  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:54:33  

Additional Information
 Earth MOID = 1.08301 au 
 Jupiter MOID = 1.9029 au 
 T_jup = 3.387 
[ 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 16.3   n/a MPO432708  

120814 (1998 HW37)          Discovered 1998-Apr-20 by LINEAR at Socorro
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
1916-Jun-05 06:43 00:02 Jupiter 1.94035700311038 1.94035627238581 1.94035773383706 1.78711974640698 1.52339704663169 2421019.779842456 2.2504773600284 169.866703702107 52.7578524231904 75.1858540571029 1522103.19179198 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:34 2020-Nov-12 17:54
1929-Jul-14 23:23 00:02 Jupiter 1.94500331629608 1.94500234332327 1.94500428926812 1.77419982507653 1.50891093011708 2425807.474454389 1.91003375844362 113.812858188264 45.301953960947 -49.8032734662898 1507332.44790752 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:34 2020-Nov-12 17:54
1987-Aug-14 21:30 < 00:01 Jupiter 1.94493856391891 1.94493799596345 1.94493913187416 1.80186914515916 1.54134051880519 2447022.396142221 0.663065287334302 81.6940178216461 51.9962894467161 70.3875701652741 1448137.71819657 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:34 2020-Nov-12 17:54
2000-Sep-23 15:09 < 00:01 Jupiter 1.94321770329918 1.9432172085247 1.94321819807322 1.77536257759683 1.51001295527508 2451811.131294144 0.364313933572806 68.7589788663022 41.567211559845 -34.5662297066607 1650734.68957096 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:34 2020-Nov-12 17:54
2058-Oct-23 22:16 < 00:01 Jupiter 1.94752351850204 1.94752267599043 1.94752436101365 1.81029662153866 1.55155667645923 2473025.428036496 0.980839647114733 120.706547069521 46.8102172829386 60.9889623853361 1451935.89874523 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:34 2020-Nov-12 17:54
2071-Dec-04 00:29 00:01 Jupiter 1.94297089586256 1.94297044952213 1.94297134220278 1.78501396148665 1.52131224545951 2477814.520453262 1.28466039023554 68.66719125372 46.3928189451364 -53.9616067126911 1871588.30802915 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:34 2020-Nov-12 17:54
2130-Jan-03 12:19 00:03 Jupiter 1.94716773531537 1.94716641235401 1.94716905827949 1.8135792765665 1.55533440711773 2499029.013147759 2.5755368946463 216.063941021748 45.9800315170119 65.3769537398696 1479035.28594369 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:34 2020-Nov-12 17:54
2143-Feb-13 06:35 00:03 Jupiter 1.94416685441759 1.94416598691961 1.94416772191612 1.79718580077577 1.53575038639274 2503817.774426512 2.85515877763784 123.477180178449 45.7368170866771 -67.9114993550041 1839694.31689965 T 11 CATAB v2.0f-lin.ifort 2020-Nov-12 17:54:34 2020-Nov-12 17:54
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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