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24704 (1991 PM4)
Classification: Main-belt Asteroid          SPK-ID: 2024704
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1511038267128837 2.9419e-08  
a 2.297336352047354 6.8611e-09 au
q 1.950200038006382 6.6866e-08 au
i 4.772154414595169 3.5691e-06 deg
node 315.6206498777633 3.7625e-05 deg
peri 332.0073881760378 3.9385e-05 deg
M 176.3381832297139 1.2192e-05 deg
tp 2458577.512740369203
(2019-Apr-04.01274037)
4.2624e-05 TDB
period 1271.848271085597
3.48
5.6976e-06
1.56e-08
d
yr
n .2830526315003903 1.268e-09 deg/d
Q 2.644472666088326 7.8978e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1873  
   data-arc span      15931 days (43.62 yr)  
   first obs. used      1977-07-21  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4705  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:47:34  

Additional Information
 Earth MOID = .93348 au 
 Jupiter MOID = 2.51855 au 
 T_jup = 3.574 
[ show covariance matrix ]

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 14.69   n/a MPCxxxxx  
diameter diameter 2.632 km 0.348 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.336   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24704 (1991 PM4)          Discovered 1991-Aug-03 by Elst, E. W. at La Silla
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PM4 = 1998 ON9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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