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5477 Holmes (1989 UH2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2005477
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07544881906184148 7.1124e-08  
a 1.917116522973828 8.0941e-09 AU
q 1.772472345311509 1.3535e-07 AU
i 22.54855909321045 8.9631e-06 deg
node 49.1227982907351 1.2346e-05 deg
peri 290.3467504541795 6.4155e-05 deg
M 209.655473623774 6.5738e-05 deg
tp 2457405.407958309273
(2016-Jan-17.90795831)
0.00017735 JED
period 969.5521912554869
2.65
6.1402e-06
1.681e-08
d
yr
n .371305436929425 2.3515e-09 deg/d
Q 2.061760700636147 8.7048e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      954  
   data-arc span      9254 days (25.34 yr)  
   first obs. used      1989-10-27  
   last obs. used      2015-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45323  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:59:01  

Additional Information
 Earth MOID = .841625 AU 
 T_jup = 3.832 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO267730  
rotation period rot_per 2.9940 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Warner, B.D.; Pravec, P.; Kusnirak, P.; Cooney Jr., W.; et al. (2005) CBET 288.]
[Warner, B.D.; Pravec, P.; Kusnirak, P.; Harris, A.W.; et al. (2011) Minor Planet Bul. 38, 107-109.]
[Pravec, P.; Scheirich, P.; Vokrouhlicky, D.; Harris, A.W.; et al. (2012) Icarus 218, 125-143. See also supplemental on-line material.]
[Warner, B.D.; Stephens, R.D.; Coley, D. (2012) Minor Planet Bul. 39, 230-231.]

5477 Holmes           Discovered 1989 Oct. 27 by E. F. Helin at Palomar.
Amateur astronomer Robert E. Holmes Jr. (b.~1956) directs the Astronomical Research Observatory in Westfield, Illinois. The name was suggested by S. Foglia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110218/MPCPages.arcLast Updated: 2011-02-22
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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