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JPL Small-Body Database Browser
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(2011 HP)
Classification: Apollo [NEO]          SPK-ID: 3563857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4804120466664136 1.0727e-08  
a 1.920175073259341 2.5245e-09 au
q .9976998363569906 2.0293e-08 au
i 3.724069060859462 3.1113e-06 deg
node 229.5090498508295 1.5677e-05 deg
peri 46.3295563262419 1.671e-05 deg
M 274.062953545157 2.2061e-06 deg
tp 2459628.499789567427
(2022-Feb-17.99978957)
6.1367e-06 TDB
period 971.8733385625573
2.66
1.9166e-06
5.247e-09
d
yr
n .3704186396680617 7.305e-10 deg/d
Q 2.842650310161693 3.7373e-09 au
  Orbit Determination Parameters
   # obs. used (total)      371  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      3092 days (8.47 yr)  
   first obs. used      2011-04-13  
   last obs. used      2019-09-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34596  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 05:02:53  

Additional Information
 Earth MOID = .0279721 au 
 Jupiter MOID = 2.30955 au 
 T_jup = 3.773 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 22.1   n/a MPO215182  
rotation period rot_per 3.9398 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Hicks, M.; Sommers, J.; Truong, T.; McCormack, M.; et al. (2011) Astronomer's Telegram 3419. http://www.astronomerstelegram.org]
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 423-438.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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