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37974 (1998 HE115)
Classification: Main-belt Asteroid          SPK-ID: 2037974
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08708856116898113 5.0678e-08  
a 2.982149584601745 2.1602e-08 au
q 2.722438468088104 1.4957e-07 au
i 12.92318648995404 5.1928e-06 deg
node 114.9047290605408 2.3344e-05 deg
peri 136.6575508407268 4.0598e-05 deg
M 68.12698261445315 3.038e-05 deg
tp 2458644.533428152652
(2019-Jun-10.03342815)
0.00016005 TDB
period 1881.016316108776
5.15
2.0438e-05
5.596e-08
d
yr
n .191385899695291 2.0795e-09 deg/d
Q 3.241860701115385 2.3483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      583  
   data-arc span      8134 days (22.27 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58513  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:24:28  

Additional Information
 Earth MOID = 1.72241 au 
 Jupiter MOID = 1.91547 au 
 T_jup = 3.215 
[ 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 14.6   n/a MPO351097  
diameter diameter 5.073 km 0.281 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.131   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37974 (1998 HE115)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ 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-Jun-19 18:09 00:03 Jupiter 1.97583762873986 1.97583700078814 1.97583825669203 2.63784807055678 2.4699922575276 2425417.255958084 3.17464319764857 248.350639179737 20.9399605428355 86.6086498100274 2503624.14134236 T 15 CATAB v2.0f-lin.ifort 2020-Aug-25 03:24:31 2020-Aug-25 03:24
1965-Feb-14 10:29 00:02 Jupiter 1.92330260664119 1.92330204029169 1.92330317299059 2.90772516891164 2.75210203447655 2438805.936523099 1.73384604202509 137.873443250323 23.8128983979426 -85.0368971134293 1828349.27318174 T 15 CATAB v2.0f-lin.ifort 2020-Aug-25 03:24:31 2020-Aug-25 03:24
2001-Sep-06 15:04 < 00:01 Jupiter 1.952913159314 1.95291266502111 1.952913653607 3.85098301880218 3.73665961384031 2452159.127864488 0.458645989833791 80.8785202131098 20.6777776327927 -83.8987834599132 2774525.21086008 T 15 CATAB v2.0f-lin.ifort 2020-Aug-25 03:24:31 2020-Aug-25 03:24
2047-Jan-05 00:03 00:01 Jupiter 1.99373501247961 1.99373428760871 1.99373573735062 2.74055701737202 2.58088523948124 2468715.502218415 1.19726137280849 115.778960516029 23.2784015839848 88.1377285931174 2475621.1527363 T 15 CATAB v2.0f-lin.ifort 2020-Aug-25 03:24:31 2020-Aug-25 03:24
2083-Sep-01 05:10 00:02 Jupiter 1.92137698094883 1.92137630561069 1.92137765628838 2.89755802647281 2.74119676770482 2482103.715473210 2.45720185232202 195.981271293745 27.8857869239056 -81.2023893272286 2344975.66487159 T 15 CATAB v2.0f-lin.ifort 2020-Aug-25 03:24:31 2020-Aug-25 03:24
2120-Mar-25 02:43 00:03 Jupiter 1.93400012646716 1.93399940209421 1.93400085084562 3.79816003129663 3.68104489731343 2495457.613205634 3.41555851887133 224.737759597626 20.5349988627833 -85.007622881547 2193589.14940635 T 15 CATAB v2.0f-lin.ifort 2020-Aug-25 03:24:31 2020-Aug-25 03:24
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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