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11864 (1989 NH1)
Classification: Main-belt Asteroid          SPK-ID: 2011864
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2032835401835327 3.2861e-08  
a 2.191337183879158 5.539e-09 au
q 1.745874403404389 7.3096e-08 au
i 5.883984117711113 3.8402e-06 deg
node 120.2971959425825 2.9724e-05 deg
peri 184.5523295223266 3.0814e-05 deg
M 178.3594582759753 7.7161e-06 deg
tp 2458413.475965450182
(2018-Oct-21.97596545)
2.4862e-05 TDB
period 1184.846906806289
3.24
4.4923e-06
1.23e-08
d
yr
n .3038367218009344 1.152e-09 deg/d
Q 2.636799964353925 6.6649e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2153  
   data-arc span      12444 days (34.07 yr)  
   first obs. used      1986-10-06  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51245  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:56:47  

Additional Information
 Earth MOID = .730774 au 
 Jupiter MOID = 2.60458 au 
 T_jup = 3.639 
[ 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 14.0   n/a MPO347619  
diameter diameter 3.999 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.597 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Stephens, R.D. (2018) Minor Planet Bull. 45, 353-355.]
geometric albedo albedo 0.231   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11864 (1989 NH1)          Discovered 1989-Jul-10 by Zeigler, K. W. at Palomar
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 NH1 = 1986 TV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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