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4285 Hulkower (1988 NH)
Classification: Main-belt Asteroid          SPK-ID: 2004285
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1617991081898186 1.9567e-08  
a 2.644012944013657 1.0675e-08 au
q 2.21621400762991 5.1065e-08 au
i 13.14608970737668 1.0188e-06 deg
node 155.0470228253199 3.5089e-06 deg
peri 78.09585473346354 8.2447e-06 deg
M 236.4726387504012 9.6079e-06 deg
tp 2459739.333335270765
(2022-Jun-08.83333527)
4.409e-05 TDB
period 1570.340358080832
4.30
9.5104e-06
2.604e-08
d
yr
n .2292496643466315 1.3884e-09 deg/d
Q 3.071811880397403 1.2403e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2522  
   data-arc span      18650 days (51.06 yr)  
   first obs. used      1970-03-02  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:31:50  

Additional Information
 Earth MOID = 1.24996 au 
 Jupiter MOID = 2.04081 au 
 T_jup = 3.338 
[ 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 12.68   n/a MPCxxxxx  
diameter diameter 7.799 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.1501 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm]
[Vander Haagen, G. (2009) Minor Planet Bull. 36, 171.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.208   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4285 Hulkower (1988 NH)          Discovered 1988-Jul-11 by Helin, E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1988 NH = 1970 EW3 = 1980 TF1 = 1987 DT1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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