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4219 Nakamura (1988 DB)
Classification: Main-belt Asteroid          SPK-ID: 2004219
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .124016568533014 9.6321e-09  
a 2.466619246402066 7.9357e-09 au
q 2.160717591585793 2.2362e-08 au
i 3.089553485245651 1.2293e-06 deg
node 140.6083344281615 1.4929e-05 deg
peri 64.69032501749173 1.7243e-05 deg
M 129.6808710366045 9.5253e-06 deg
tp 2458690.787811473069
(2019-Jul-26.28781147)
3.7044e-05 TDB
period 1414.984233240541
3.87
6.8285e-06
1.87e-08
d
yr
n .2544197960252478 1.2278e-09 deg/d
Q 2.77252090121834 8.9198e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2796  
   data-arc span      15455 days (42.31 yr)  
   first obs. used      1978-09-27  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:05:17  

Additional Information
 Earth MOID = 1.15807 au 
 Jupiter MOID = 2.18628 au 
 T_jup = 3.474 
[ 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 13.64   n/a MPCxxxxx  
diameter diameter 9.969 km 3.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
rotation period rot_per 115.492 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.036   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

4219 Nakamura (1988 DB)          Discovered 1988-Feb-19 by Inoue and Muramatsu at Kobuchizawa
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1988 DB = 1978 SS4 = 1986 VH8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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