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JPL Small-Body Database Browser
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1876 Napolitania (1970 BA)
Classification: Inner Main-belt Asteroid          SPK-ID: 2001876
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .0477368199461088 6.0272e-08  
a 1.964239147946077 6.2372e-09 au
q 1.870472617409477 1.1782e-07 au
i 23.11185616361297 5.0397e-06 deg
node 304.4711988709852 1.2447e-05 deg
peri 243.4368989911425 4.5603e-05 deg
M 43.57910349548103 4.557e-05 deg
tp 2458878.778929977417
(2020-Jan-30.27892998)
0.00012719 TDB
period 1005.518280399548
2.75
4.7894e-06
1.311e-08
d
yr
n .3580243214046313 1.7053e-09 deg/d
Q 2.058005678482676 6.535e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1175  
   data-arc span      18193 days (49.81 yr)  
   first obs. used      1970-04-06  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47992  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:07:06  

Additional Information
 Earth MOID = .923751 au 
 Jupiter MOID = 3.04053 au 
 T_jup = 3.778 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO347532  
rotation period rot_per 45.63 h n/a LCDB (Rev. 2019-August); 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:
[Warner, B.D. (2016) Minor Planet Bull. 43, 57-65.]

1876 Napolitania (1970 BA)          Discovered 1970-Jan-31 by Kowal, C. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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