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24702 (1991 OR)
Classification: Inner Main-belt Asteroid          SPK-ID: 2024702
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09038740482532573 2.4386e-08  
a 1.944629884693409 6.6929e-09 au
q 1.768859836070199 4.8314e-08 au
i 24.25535742131008 7.8818e-07 deg
node 135.1775207247064 3.0298e-06 deg
peri 232.9406282936508 2.8302e-05 deg
M 254.2435364422674 3.3325e-05 deg
tp 2459491.476743646575
(2021-Oct-03.97674365)
9.2172e-05 TDB
period 990.4985869311236
2.71
5.1135e-06
1.4e-08
d
yr
n .3634533201257695 1.8764e-09 deg/d
Q 2.120399933316618 7.2978e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1468  
   data-arc span      11100 days (30.39 yr)  
   first obs. used      1990-01-26  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45093  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:47:31  

Additional Information
 Earth MOID = .800292 au 
 Jupiter MOID = 3.22286 au 
 T_jup = 3.786 
[ 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 14.88   n/a E2021B10  
diameter diameter 1.750 km 0.342 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 59.5 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:
[Warner, B.D. (2012) Minor Planet Bull. 39, 245-252.]
geometric albedo albedo 0.914   0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24702 (1991 OR)          Discovered 1991-Jul-18 by Holt, H. E. at Palomar
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 OR = 1999 NN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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