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4877 Humboldt (5066 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2004877
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342299018961632 2.8141e-08  
a 2.631678251333961 9.0304e-09 au
q 2.278428337835137 7.7027e-08 au
i 12.38795839382478 4.1285e-07 deg
node 228.8192170202614 2.0862e-06 deg
peri 202.7580346849022 7.7941e-06 deg
M 327.4377714418963 7.4574e-06 deg
tp 2459341.545499614659
(2021-May-07.04549961)
3.2397e-05 TDB
period 1559.36439579596
4.27
8.0262e-06
2.197e-08
d
yr
n .2308632933845088 1.1883e-09 deg/d
Q 2.984928164832785 1.0242e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2314  
   data-arc span      25408 days (69.56 yr)  
   first obs. used      1951-08-26  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41439  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:55:10  

Additional Information
 Earth MOID = 1.29635 au 
 Jupiter MOID = 2.35097 au 
 T_jup = 3.354 
[ 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 13.06   n/a E2021B10  
diameter diameter 6.828 km 0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.491213 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.290   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4877 Humboldt (5066 T-2)          Discovered 1973-Sep-25 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 5066 T-2 = 1982 YF2 = 1986 TU15 = 1986 UF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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