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3666 Holman (1979 HP)
Classification: Main-belt Asteroid          SPK-ID: 2003666
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1288982968371947 1.7272e-08  
a 3.114837359379405 1.4278e-08 au
q 2.713340128830534 5.7441e-08 au
i 2.364869824639404 4.9478e-07 deg
node 120.3167315949107 1.4198e-05 deg
peri 54.01834217056138 1.6111e-05 deg
M 227.8682423756703 9.4822e-06 deg
tp 2459937.480845746080
(2022-Dec-23.98084575)
5.5231e-05 TDB
period 2007.943504565447
5.50
1.3806e-05
3.78e-08
d
yr
n .1792879128229806 1.2328e-09 deg/d
Q 3.516334589928275 1.6119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3200  
   data-arc span      30049 days (82.27 yr)  
   first obs. used      1938-11-28  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43668  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:23:58  

Additional Information
 Earth MOID = 1.71876 au 
 Jupiter MOID = 1.44662 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457144.5 (2015-May-02.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1270967817526915 1.7502e-08  
q 2.720982074019508 5.83e-08 au
tp 2457934.149092982848
(2017-Jun-29.64909298)
5.0259e-05 TDB
node 120.3887063803763 1.4225e-05 deg
peri 54.9289569301783 1.6145e-05 deg
i 2.363532416645272 4.9458e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3200  
   data-arc span      30049 days (82.27 yr)  
   first obs. used      1938-11-28  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43668  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:23:58  

Additional Information
 Jupiter MOID = 1.44662 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.063065587462498E-16 -9.970731184613971E-16 -1.915104065468598E-13 -1.704625545543729E-14 8.718441269167627E-15 -9.793144623355463E-16
q -9.970731184613971E-16 3.398908190997338E-15 7.653015684188065E-13 5.120714816528196E-14 -1.170341776704393E-14 2.923468008839035E-15
tp -1.915104065468598E-13 7.653015684188065E-13 2.525950619202935E-9 -6.210544987025593E-12 3.777326407647097E-10 -1.211119232621104E-12
node -1.704625545543729E-14 5.120714816528196E-14 -6.210544987025593E-12 2.023540951895716E-10 -2.028805645772142E-10 6.562405736459888E-12
peri 8.718441269167627E-15 -1.170341776704393E-14 3.777326407647097E-10 -2.028805645772142E-10 2.606606943870724E-10 -6.774494983020422E-12
i -9.793144623355463E-16 2.923468008839035E-15 -1.211119232621104E-12 6.562405736459888E-12 -6.774494983020422E-12 2.446077170889386E-13

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 12.33   n/a E2021B10  
diameter diameter 20.304 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 35.531 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.066   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3666 Holman (1979 HP)          Discovered 1979-Apr-19 by Muzzio, J. C. at Cerro Tololo
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1979 HP = 1938 WQ = 1982 VH1 = 1984 CB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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