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JPL Small-Body Database Browser
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912 Maritima (A919 HC)
Classification: Main-belt Asteroid          SPK-ID: 2000912
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1764436024603787 4.2448e-08  
a 3.138495732290478 1.8079e-08 au
q 2.584728238978621 1.3171e-07 au
i 18.27408626588934 5.9264e-06 deg
node 33.7313899368035 1.5301e-05 deg
peri 90.18023934587643 2.3413e-05 deg
M 169.5862868244335 1.6096e-05 deg
tp 2458043.814986129105
(2017-Oct-17.31498613)
9.2119e-05 TDB
period 2030.863529372948
5.56
1.7548e-05
4.804e-08
d
yr
n .1772644960103026 1.5317e-09 deg/d
Q 3.692263225602334 2.1269e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3048  
   data-arc span      32654 days (89.40 yr)  
   first obs. used      1930-05-19  
   last obs. used      2019-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .33565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:44:54  

Additional Information
 Earth MOID = 1.67856 au 
 Jupiter MOID = 1.70334 au 
 T_jup = 3.110 
[ 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 9.3   n/a MPO350805  
diameter diameter 82.675 km 0.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 1332. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Higgins, D.; Martinez, L. (2011) Minor Planet Bull. 38, 78-79.]
geometric albedo albedo 0.039   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

912 Maritima (A919 HC)          Discovered 1919-Apr-27 by Schwassmann, A. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A919 HC = 1930 GA = 1930 MO = A911 WB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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