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2201 Oljato (1947 XC)
Classification: Apollo [NEO, PHA]          SPK-ID: 2002201
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 222 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7129113582984434 3.2797e-08  
a 2.174221327931682 9.0695e-09 au
q .6241942477944612 6.9247e-08 au
i 2.522413344905413 3.8261e-06 deg
node 74.98751470655803 0.00010902 deg
peri 98.23956125410612 0.00010891 deg
M 264.6362824517508 3.2222e-06 deg
tp 2459510.694952219096
(2021-Oct-23.19495222)
1.228e-05 TDB
period 1170.992340376989
3.21
7.327e-06
2.006e-08
d
yr
n .3074315583346187 1.9236e-09 deg/d
Q 3.724248408068903 1.5535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1042  
   # delay obs. used      0  
   # Doppler obs. used      5  
   data-arc span      32542 days (89.10 yr)  
   first obs. used      1931-12-03  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4656  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-06 05:22:16  

Additional Information
 Earth MOID = .00324024 au 
 Jupiter MOID = 1.24587 au 
 T_jup = 3.299 
[ 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 15.3   n/a MPO492776 IRAS observations used: 11
diameter diameter 1.80 km 0.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 26. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1995) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.4328   0.030 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2201 Oljato (1947 XC)          Discovered 1947-Dec-12 by Giclas, H. L. at Flagstaff (LO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1947 XC = 1979 VU2 = 1979 XA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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