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30531 (2001 ND21)
Classification: Main-belt Asteroid          SPK-ID: 2030531
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2033156543919647 4.6178e-08  
a 3.155791583810184 1.5872e-08 au
q 2.514169752823162 1.4806e-07 au
i 1.812929250471583 3.7044e-06 deg
node 274.6742227147981 0.00015573 deg
peri 77.12812832435044 0.0001559 deg
M 148.325124042155 9.2699e-06 deg
tp 2458356.829008497821
(2018-Aug-26.32900850)
5.0422e-05 TDB
period 2047.674383568792
5.61
1.5448e-05
4.229e-08
d
yr
n .1758092023266773 1.3264e-09 deg/d
Q 3.797413414797207 1.9099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1403  
   data-arc span      8906 days (24.38 yr)  
   first obs. used      1996-11-01  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49355  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:29:56  

Additional Information
 Earth MOID = 1.5077 au 
 Jupiter MOID = 1.65534 au 
 T_jup = 3.173 
[ 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 14.02   n/a E2021B10  
diameter diameter 9.093 km 0.234 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30531 (2001 ND21)          Discovered 2001-Jul-14 by JPL/GEODSS NEAT at Palomar
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 ND21 = 1996 VB2 = 2000 KM17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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