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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 211 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7128855212674332 3.2939e-08  
a 2.174083942076455 9.1281e-09 au
q .6242109777501252 6.9534e-08 au
i 2.522429202495983 4.1235e-06 deg
node 74.98703322352544 0.00010929 deg
peri 98.24724876350736 0.00010919 deg
M 203.1157336122513 2.8846e-06 deg
tp 2459510.757949907808
(2021-Oct-23.25794991)
1.2329e-05 TDB
period 1170.881352198845
3.21
7.3741e-06
2.019e-08
d
yr
n .3074606998599317 1.9364e-09 deg/d
Q 3.723956906402784 1.5635e-08 au
  Orbit Determination Parameters
   # obs. used (total)      976  
   # delay obs. used      0  
   # Doppler obs. used      5  
   data-arc span      32135 days (87.98 yr)  
   first obs. used      1931-12-03  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47477  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-26 05:03:15  

Additional Information
 Earth MOID = .00312534 au 
 Jupiter MOID = 1.24708 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. 2019-August); 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

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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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