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JPL Small-Body Database Browser
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35574 (1998 HE12)
Classification: Main-belt Asteroid          SPK-ID: 2035574
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06115909970428911 4.2472e-08  
a 2.588502090586276 1.2201e-08 au
q 2.43019163314335 1.0953e-07 au
i 8.927285720494648 4.678e-06 deg
node 17.9537395330252 2.6512e-05 deg
peri 160.8467885393084 4.4503e-05 deg
M 139.6975962269231 3.6282e-05 deg
tp 2458410.220583234090
(2018-Oct-18.72058323)
0.00015224 TDB
period 1521.147076078132
4.16
1.0755e-05
2.945e-08
d
yr
n .2366635058906749 1.6733e-09 deg/d
Q 2.746812548029203 1.2947e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1629  
   data-arc span      7789 days (21.33 yr)  
   first obs. used      1998-04-01  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48403  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:52:25  

Additional Information
 Earth MOID = 1.43397 au 
 Jupiter MOID = 2.21095 au 
 T_jup = 3.401 
[ 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 14.3   n/a MPO395341  
diameter diameter 4.985 km 0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.163   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35574 (1998 HE12)          Discovered 1998-Apr-19 by Spacewatch at Kitt Peak
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HE12 = 2000 VS46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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