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22415 Humeivey (1995 UB21)
Classification: Main-belt Asteroid          SPK-ID: 2022415
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .153647152034043 2.8572e-08  
a 2.457755097261924 9.6149e-09 au
q 2.080128026170477 7.129e-08 au
i 7.608795803242462 5.3781e-06 deg
node 208.468286609243 2.7909e-05 deg
peri 58.85295121639696 3.4069e-05 deg
M 290.5208187906856 1.9905e-05 deg
tp 2459472.117986893618
(2021-Sep-14.61798689)
7.8356e-05 TDB
period 1407.36366750093
3.85
8.2586e-06
2.261e-08
d
yr
n .2557974234472428 1.501e-09 deg/d
Q 2.83538216835337 1.1092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1351  
   data-arc span      10752 days (29.44 yr)  
   first obs. used      1991-10-04  
   last obs. used      2021-03-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51886  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:05:46  

Additional Information
 Earth MOID = 1.07497 au 
 Jupiter MOID = 2.25541 au 
 T_jup = 3.463 
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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 14.75   n/a E2021B10  
diameter diameter 2.483 km 0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.344   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22415 HumeIvey           Discovered 1995 Oct. 19 by Spacewatch at Kitt Peak.
James Nairn Patterson Hume (1923-2013) and Donald Glenn Ivey (b. 1922) were physics educators, best known for their award-winning 1962 film Frames of Reference. Name suggested by R. and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-03-14

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Alternate Designations
 1995 UB21 = 1991 TZ3 = 1998 KM40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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